The ThrottleStop Guide

Would you recommend "undervolting" for my problem?

I just learned there is such a thing as undervolting, really don't know if I can do that with my i7...

 

Under volting is a great idea but you can only do this with the Core 2 processors. Intel removed this feature from the Core i7 and i5 CPUs.

 

Ok, hopefully today I get my laptop back, if temperatures are still high (something tells me, even with the mx-4 thermal paste, they will be..) I will try your software. Plan B, holes in the bottom of the laptop, so air can go in

 

When will support for the new Haswell processors be added?

 

When someone is nice enough to donate a new Haswell CPU and Z87 mobo to Kevin. What did you think?

 

I think I added Haswell support to ThrottleStop 5.10

That beta version expired due to lack of interest so I guess it is time to release another version for some more testing. Maybe in the next few days.

From what I have seen so far, ThrottleStop should work correctly on Haswell. Intel has standardized where most of the important registers are in their recent CPUs and the Haswell desktop and mobile CPUs are not significantly different than the previous Ivy Bridge CPUs. The Haswell ULV CPUs have a few new features like the low power C8, C9 and C10 state as well as a new 24 MHz BCLK when the CPU is idle in some of these C States. ThrottleStop might choke a little on one of them.

Send me a PM if you have your new 4700QM in stock and want to do some testing for me.

 

I wouldn't mind testing out TS with my Haswell CPU.

 

Thank you for this app.

I just started using TS in place of RMClock to undervolt the Toshiba L300 P8600 machine in my sig. Simple, intuitive, works well, and significantly reduced CPU resources used by RMClock (and a P8600 doesn't exactly have an abundance of resources).

+rep

 

Hi Unclewebb,

Do you know when the next version that support Haswell cpu?

Thank!

 

The next version of ThrottleStop is ready for some Haswell beta testing. Send me a PM and I will send you a link if you want to help test it.

I haven't heard of any significant differences between Haswell and Ivy Bridge so ThrottleStop should work correctly without needing any major changes.

Edit: Thanks StratCat. RM Clock was a great program but I found that starting with the 45nm Core 2 CPUs, you could reduce the core voltage and get significant power savings without having to get too technical about it. Keep it simple was the original goal but I got a little carried away compared to how it first started out. Kind of cool though how the new version supports everything from Core 2 to Haswell without being a CPU hog.

 

Hi Unclewebb,

I have been using Throttlestop for about months now, its such a brilliant program.
I normally have the 'Show CPU' ticked in the options so I can view the temps in my start bar like in this picture.


Lately it the 'Show CPU' deactivates itself after I restart. Im trying to fix it but havent had much luck.
I've trying reinstalling after deleting all the files and registries but nothing seems to work
Do you have any suggestions?

 

I have been working on a fix for the Windows 7 and Windows 8 system tray compatibility issues. ThrottleStop 5.00 was not working correctly with this Windows feature. I would suggest cleaning out the Windows icon cache area and try running the ThrottleStop 5.10 beta 4 edition.

How to Clean the Notification Area Icon Cache in Windows 7 & Windows 8 | 7 Tutorials

If you go about half way down that page you will find a download link called,

Notification_Area_Cleaner.zip

In this zip file is a simple and safe .bat file that deletes the 2 registry entries so Windows can rebuild the system tray - notification area icon cache. Windows does not give a user a way to remove individual entries from the cache so the best thing to do is to delete the whole thing. Icons will immediately be added back into the cache as you use them. I have been using Windows 8 recently and this seems to work OK so you don't have to use the Show all Icons feature anymore. The ThrottleStop 5.10 icons are being properly registered with Windows 8 so they don't do the disappearing trick.

I will send you a PM with the link to download the beta. Initial testing looks good. One tester told me that the new version has unlocked the limited overclocking abilities of his new Haswell 4700 MQ. Hopefully he will post some screen shots.

 

Hello unclewebb, I tried to send you a PM, couldn't figure out how, went to your page, maybe it's because I'm newly registered (like 5 minutes ago) with 0 posts. I have a Toshiba Qosmio x775 with a Nivida GeForce GTX 560M GPU, I believe my processor is i5. I ran a program called speccy and when I game my CPU overheats horribly, which I assumed was the case since I get massive performance drops after I game for a little while. My laptop get's very hot, I plan on trying to get as much dust as I can from it, but I also downloaded throttlestop. I wanted to run it and see if it helps, but I'm afraid of harming my computer because every time I look into a forum post or a youtube video everyone always says that you can blow up your computer if you do it wrong. I am not very knowledgable when it comes to computers/laptops at all but I can't afford a new one for sure (this one is like a year and a half old only) so I wanted to see if you could help me with the settings. I tried to read through the guide but got a bit lost so here I go, I just want to maybe limit my CPU to run constantly without overheating. I think what is happening is after I game for awhile (I play path of exile, it's kind of like diablo) it get's hot so instead of 60 fps it randomly drops to 4 fps for a few seconds and sometimes longer. The longer I play the worse it gets (making gaming unbearable/impossible). What settings should I use to make my game not mess up. I don't really need 60 fps, if I could run constantly at 30 fps instead of jumping from 4 to 60 fps, that would be amazing and totally alright with me.

I don't really know what all the boxes are for, I know I looked up the acronyms but that didn't help much. One lowered the voltage or something? A youtube video said to check it but then a forum post said messing with voltages could harm your computer so I am totally lost.

I'm sorry if I sound stupid or if these questions are, I'm just a bit computer illiterate and can't really afford to pay a grand for another computer if I mess this one up and I'd rather ask questions on here and get it right than mess up. Thanks in advance for any help, I'd really appreciate it, =)

 

unclewebb: can you send me the link as well to the new ThrottleStop 5.10 beta 4 edition ?
Thank You!

 

chros: You don't have any message privileges at Notebook Review yet so you will have to send an email to the address in the About... box of ThrottleStop.

sheymyster: I have zero experience with Toshiba laptops. Some laptops are very poorly designed with completely inadequate cooling solutions. After you have cleaned out your laptop, see what temperature it is running at when gaming. I would suggest turning on ThrottleStop, leaving it in monitoring mode and then click on the Log File option and go play a game so you have a record of your CPU's performance; speed and temperature and throttling if any.

You can also email me the log file because it sounds like you are going to need a significant amount of help. ThrottleStop can be used to slow your computer down to help reduce its temperature but you need to clean it out first.

 

Thank you for your reply, after looking to the dissassembly tutorial for my laptop, I got intimidated (toshiba couldn't be nice enough to put in a panel to access the cooling fan so it requires removing EVERYTHING like the HD's, keyboard, etc.......and I'm not up for that). I borrowed some compressed air in a can from a friend and did my best to shoot out the dust. After getting most of it out, I could actually see the fan blades again! I ran my game and a browser with speccy again and it seems to be maxxing out at 78 C while gaming, which is a huge improvement from 93 C that I was getting earlier. Do you think that's still too high? Should I still take more action to lower that temperature more? I could maybe get a stand or something to let it have some breathing room because right now it just sits on my desk and the intake for the cooling fan is.........wait for it........on the bottom so not sure if that's inhibiting flow too much still.

Again, thanks for the help. Also I looked for your email address, maybe I'm just overlooking it but I can't seem to figure out what you mean when you say About... box of throttlestop, mind linking me so I can email you if you don't mind? Thanks!

 

first, thanks uncle what seems to be a great successor of rmclock, that i used all the years.
now i got an ivy i7 and switched to throttlestop.

i have the same high pitched noise from speedstep though and also tried to get rid of it playing around with c1e & demotion toggles, but nothing seems to change the sound..
most of the time >~90% the cpu idles in c6. is there a way to disable c6 states and only use c3 & c1?
maybe c6 is the reason of this nervwrecking sound...

cheers

ps. it would be nice if you can add doubleclick to the tray icon to open the ts window btw.

 

I thought I already did.

If your bios does not let you disable the C States then you are out of luck. Most laptop motherboard manufacturers block this feature. On the locked CPUs, you usually need at least C3 enabled for Turbo Boost to work correctly.

sheymyster: 78C is a lot better than 93C. How does your laptop run now? Is it still throttling? If it is running at its rated speed then there is no need to reduce the temperature further. Click on the ThrottleStop system tray icon and at the top of that menu select About... That is where my email address can be found. Unfortunately, it is against Notebook Review forum policy for me to simply post that here when users need additional help.

 

Not throttling anymore, running awesomely! Thanks for all of your help, and I figured there was some restriction on email, but yea been gaming for the past few hours (no work tomorrow woohoo!) and haven't had a single fps drop or any other performance issue yet, thanks!

 

Unclewebb, just like to bring to your attention, that someone is using Intel XTU to control the voltage of a Haswell i7-4700MQ. I am wondering if there is someway you can get into the Haswell processor to control voltage. The user on the forums thinks that voltage control might be adjustable due to the FIVR in the Haswell processor?

Post #22 on these forums at this thread http://forum.notebookreview.com/har...-watt-vs-i7-4702mq-37-watt-3.html#post9247407

 

T2050: Thanks for the heads up about this new Haswell feature. I contacted the person in that post so maybe he will be able to do some testing for me. The public documentation probably doesn't have too much information about this new feature so I will have to try to do some reverse engineering and maybe get lucky finding out what register is in control of this.

 

Hello, unclewebb. Thank you for ThrottleStop software. I have started using it recently. My question is: what are the advanced ways to make sure that my CPU gets the required amount of idle time in C states (my understanding is that it is needed for lower temperatures) and doesn't process unnecessary junk in the background? I remember you mentioning that sometimes a bad driver can prevent a CPU from resting. How do I find such possible bad driver?

I know followed most of the usual tips that I could find and tried my best to disable most services and startup programs that I know and check the computer for malware and rootkits. Task Manager doesn't show any processes that are really doing something (except for one of the svchost.exe processes that is taking 160 mb of RAM, but no CPU). Looks pretty clear. But if I'm not doing anything and have nothing launched, except for small utilities that are usually in the background, as well as an antivirus and firewall, sometimes I see my CPU going like 3-5-2-3-8-21-4-10-2-1-19-5-1. There are some spikes sometimes, that sometimes seem unnecessary to me.

Here's how my C states window looks (in TS nothing is enabled, only PROCHOT is disabled).


Should I be relying on this window? If so, what are the numbers that I should be seeing here when my system is idle for the optimal CPU performance in games? Is it possible for something to be using CPU resources without the Task Manager showing it? Also, my antivirus is AVG free and it has like 8 processes running all the time. I'm fine with AVG, but I'm wondering if it could be doing too much while I play games and loading my CPU unnecessarily, preventing it from resting. I'm thinking it might not be the most efficient antivirus out there. Can you recommend a free antivirus that you think is definitely better? My system specs are in the signature. I'm using Comodo firewall too.

Update: I don't see my signature for some reason. It's Dell XPS 15 l502x. i5 2410m, 6 GB RAM, Nvidia GT 540m.

 

Here are some numbers you can compare to.

http://img823.imageshack.us/img823/6003/xexq.png

You seem to have something running in the background that is preventing your CPU from spending time in the low power C States. Improving your C State percentages is the easiest way to extend your battery run time. You will have to find out what is running in the background or maybe it is another bad driver issue. Without access to your computer it is impossible for me to solve this problem for you. The above screen shot is from a laptop running Windows 8 and the processor has 2 cores and 4 threads and runs at a very similar speed to your CPU so that should not be causing a major difference in C State percent.

ThrottleStop support for Haswell is almost a reality. I just need to finish a few new features for the 3rd Gen UM CPUs before the next release.



Thanks Nik for all of your help.

 

@unclewebb, whoa. How bad it is in my situation? I don't really understand the differences between those states. Judging from the image, it's best when CPU spends the most time in C6 and no time in C3 and C7?

Maybe somebody else had a similar problem and could point me to possible solution?

Update: have found out some information that is pointing at the possibility of this being related to overheating. It's very possible as I have temperatures problem.

 

Here's what happened once I unplugged the power cord from my notebook. Any thoughts on why this might be happening?


Update: That was a balanced power plan. Here's High performance plan with power unplugged, running on a battery:

 

I recently found out that Intel's 3rd Generation Core i mobile processors have a feature that when you switch from AC power to Battery power, the deepest low power C state automatically changes from C6 to C7 to maximize power savings. It looks like your 2nd Generation Core i CPU also has this feature. This might be a laptop specific feature that some manufacturers have decided to turn off in the bios. The bigger the C State number, the greater the power savings is. Intel has added 3 additional C States to their new mobile Haswell CPUs ; C8, C9, C10. CPUID 0x4065- and CPUID 0x4066-

I think that ThrottleStop's C State monitoring feature is very useful but it is rarely talked about in this forum or any forum that I have seen. Your second screen shot shows something that I also recently noticed. Here is an example of my laptop doing the same sort of thing.



You can see that on the first core, this CPU is being prevented from using C6. If one core is prevented from going into C6 then the entire CPU package will also be prevented from using C6. When I first saw this I thought for sure something was seriously wrong with Windows8 or with this CPU. I tracked this problem to the use of Google Chrome. The programmer of Google Chrome that came up with this "feature" needs to be shot. Intel engineers work hard to maximize battery run time and then some dummy does this and completely kills Intel's efforts. I am a regular user of Chrome but when on battery power, I would avoid using it. Internet Explorer and FIrefox do not interfere with the CPU using the low power C States like this. There is no reasonable reason to be doing this. When switching to battery power the same thing happens except now the second core enters C7 while the first core is still limited to only C3 which blocks the C7 Package C State and increases power consumption when on battery power. The only benefit might be some microscopic increase in off idle performance but this benefit would be difficult to measure. The decrease in battery run time would be much easier to measure.

I have not seen this issue with any other software so let me guess, are you using Google Chrome? Someone should send this information to the developers so they can give their heads a shake.

Edit: The percentage of time a CPU spends in the deep low power C States when idle should not have anything to do with your CPU temperature. The #1 cause of a CPU being prevented from using C6 or C7 on battery power is poorly written software or a poorly written driver that polls the CPU too often or outright blocks the CPU from using C6 and C7. After installing Windows and after installing each additional program to your computer; it would be a good idea to monitor the impact on your C State percentages if you are concerned about heat, power consumption or battery run time when idle or lightly loaded.

 

Yes, I use chrome as my default browser and it is often running in the background at all times. I almost don't use the notebook on battery power though. However, it's still looks similarly like your screenshot, only the percentages are smaller. The first core isn't getting much of C6. Thank you for some very insightful information.

Update: seems like CPU uses the C states OK now. Have disabled some services, uninstalled some unneeded drivers and so on. Not sure what exactly worked but now it uses C6 like on your picture. Good.

 

@unclewebb, hello, i like your tool very much. Especially because i can activate slfm of my cpu. I tried to activate slfm on linux and played a little with the msr, unfortuanatly i was not able to get slfm activatet. Can you tell me how you activate slfm?
Great thanks.

 

When you want to find out what registers ThrottleStop is modifying, try using my MSR Finder tool.

MSRFinder.zip

Start ThrottleStop and start MSR Finder. Click on the Snapshot button to get a baseline of your CPU's registers, click on SLFM in ThrottleStop and then click on Compare in the MSR Finder tool. If it finds a register or two that have changed, it will create a CMP compare file which you can open up to see what registers it found. You might have to run this tool a couple of times to confirm that you have found the correct register. Hopefully this can answer your question. I don't like giving away all my secrets in the forums.

Once you find the correct bit, you can use my MSR Tool to modify it in Windows. Remember to turn off ThrottleStop so it does not over write what you are doing with the MSR Tool.

MSR.zip

Playing around with bits and bytes is the best way to learn.

 

Unclewebb, I need your advice as well. Could you please tell me how to setup Throttlestop for a Toshiba Laptop Qosmio x775-v3d80 (Intel Core i7-2670QM, Nividia 560m) in order to hopefully reduce throttling? Thank you in advance!

 

Unclewebb, could you please tell me how to configure throttlestop in order to hopefully stop any throttling on my Toshiba Qosmio X775-3dv80 gaming laptop? (Intel Core i7-2670QM, Nividia 560m) Thank you in advance!

 

Legatovash: How can I help you if I don't own a Toshiba Qosmio x775-v3d80 and you don't provide me with any information? What problem are you having? What's throttling? How about start by logging your CPU performance by using the Log File option in ThrottleStop and if you are gaming, log your GPU performance using GPU-Z. It's hard to solve a problem if you don't know exactly what the problem is.

 

Hi Unclewebb, i was wondering if you could help me. i have the late-2011 macbook pro (Intel Core i5, 2.40GHz) with intel hd 3000 graphics. can you help set the settings for throttlestop for my macbook pro? when i play skyrim my fps goes from 30 to 8 anywhere when running, walking, fighting, etc. But it lags constantly and sometimes freezes and i have to close the game down with task manager. i have 50mods but i tested them all and it doesn't have to do with them. it's frusterating me alot. because it's becoming unplayable.

I also just want to know if it is safe for my Macbook Pro because people been saying on the guides on Youtube in the comment section that it broke their laptop. so i just want to make sure.

Thanks,

Avery

 

FYI, please don't make duplicate posts. Thanks.

 

Hey unclewebb, I was wondering if you could get back too me:hi2:. I'm using throttlestop but I am confused on what settings to use for my, Mac-book Pro late 2011 . it does have what i think is throttling. like the FPS (I use Fraps), When throttlestop is turned off the Fps jumps from 16 to about 35. And usually it gets lagging when this happens . Im testing throttlestop now and these are my settings,

here are my laptop specs:

 

So i have a 3rd gen Intel Core i7-3610QM in my laptop and I know that you cant undervolt them like the previous processors so what can i do for better battery life with this program??

 

avery19000:Can you read the last post on the previous page.

http://forum.notebookreview.com/har...31329-throttlestop-guide-163.html#post9260886

You checked off the Log File option so why not copy and paste that information to Pastebin.com - #1 paste tool since 2002! so I can have a look. Show me some data when your laptop is throttling. The HD3000 is not a very powerful GPU so you might need to lower your expectations.

Your CPU supports a maximum turbo multiplier of 30 and you have ThrottleStop set to 25. Are you doing this to reduce your system temperature and avoid throttling? Is your CPU overheating? I have never run ThrottleStop on a Mac so throw me a bone here and give me some more information. A ThrottleStop screen shot when your laptop is idle doesn't tell me nearly as much information as a log file tells me.

SA13: There probably isn't very much you can do to increase battery life. ThrottleStop is useful on some laptops to maximize performance when plugged in. When running on battery power, I recommend turning ThrottleStop off so your CPU can best manage itself. You can use the ThrottleStop C State data to eliminate background apps running on your system that are preventing your CPU from entering the deeper low power C States like C6 or C7 when on battery power. Google Chrome is a good example of that. Maximizing the time your CPU cores and CPU package spend in the deep low power C states when idle is the easiest way to extend battery life.

 

Hey Unclewebb, sorry i took so long to get back to you. i just made a log file with playing skyrim in whiterun and i hade yesterday with just searching the web and stuff. I put it on pastebin but i hade to split them in two parts because i guess the file size was too big for a free user. But yes my computer does overheat when i play games with throttlestop on and i do use a cooling pad with two fans underneath it. So here are the links to My log files in paste Bin that u need :

Skyrim (Off)

Log File Part 1 (Skyrim off) - Pastebin.com

Log File Part 2 (Skyrim off) - Pastebin.com

Skyrim (On)

Log File Part 1 (Skyrim on) - Pastebin.com

Log File Part 2 (Skyrim on) - Pastebin.com

 

Your CPU is getting up to 98C which is too hot but I don't see any CPU throttling in your logs. You could try logging the HD 3000 with GPU-Z if it is supported. At these temperatures, it might be programmed to start throttling before the CPU does.

What screen resolution are you trying to play at? I have read that with a few tweaks you can get some playable frame rates in this game on the HD 3000 but at only 800x600.

Are you using the latest Intel GPU drivers? Intel GPUs are not supported as well as Nvidia and AMD GPUs are supported when it comes to gaming. Both Nvidia and AMD release updated video drivers on a regular basis to correct problems in any modern game. Intel driver support for gamers is not at this level and on the hardware side, the HD 3000 is a long ways from cutting edge technology.

It doesn't look like ThrottleStop is going to be able to help you out with this problem.

 

I have received a Haswell i7-4702MQ today.
Just over a couple of years ago, when with Sandy Bridge quad when they first came out, I did some testing for you.
If you want I would be keen on doing some more with Haswell?

I have since installed Intel XTU 4.1 on my notebook, there appear to be a host of setting open to tweak. I have posted 4 screenshots here on the second post of the thread I created.
Looks like it is possible to maybe adjusting the turbo clocks to x34, lowering the thermal limits, voltages, and tweak the integrated graphics.
http://forum.notebookreview.com/hp-...7-4702mq-nvidia-750m-haswell-quad-review.html

Adding after edit, I change the voltage of the processor using the setting Dynamic CPU Voltage Offset, and then reducing it by -100mV, thus under voltage of the processor is possible. This is some pretty cool stuff for the new Haswell processor, especially in a mobile platform.
Even if the screen shot does not mean anything to you, the core voltage at idle was 0.667v, and then down to 0.571v



Also check out post #2 of the threaded link, I have posted details about which parts are unlocked for the i7-4702MQ, taken with HWinfo

There might be a host of things that you maybe able to add into newer versions of throttlestop with Haswell.

 

Looks like the forums ate my post.

Okay, so lets say i have a processor that is rated at 2.4-3.4 ghz. If i set cmod to 100, will that make the processor run at 2.4 or 3.4 ghz?

How does turbo boosting factor into this?

 

T2050: Thanks for the info. Intel removed simple user adjustable voltage from their processors when the original Core i series was introduced. It is great to see that this important feature has returned in Haswell. A friend is building a couple of new Haswell desktop computers so I should be able to read some registers to see if I can figure anything out. If Intel has moved control of this feature to the chipset, it will be a long time before I add this feature to ThrottleStop. I don't have enough time for any significant new features.

Question2: What CPU model do you have? If the default speed is 2.4 GHz and the maximum turbo boost speed is 3.4 GHz, when Clock Modulation is set to 100.0% and a single core is active, your CPU will run at 3.4 GHz. On the newer CPUs, Clock Modulation is an easy way to control the maximum turbo boost multiplier. RealTemp also has this feature built in for those that are afraid to run ThrottleStop.

RealTemp T|I Edition
http://www.overclock.net/t/1330144/realtemp-t-i-edition

The easiest way to test your CPU is to put a simple load on it like a single thread of the TS Bench test. While that test is running, play around with the Clock Modulation setting and watch what happens to the maximum multiplier.

 

I've got the Intel Ivy Bridge i7-3630QM 2.4-3.4Ghz Turbo. The problem with my laptop is that the fan keeps turning on/off due to bad fan profiles...the fan turns on at 50 degrees and turns off at 40 degrees. Idle temp is 47 degrees. It keeps turning on every minute or so.

I was thinking that if i made the processor run faster all the time, it would stay above the 50 degree mark and the fan stay on all the time instead of constantly turning on/off, because i know that by default the processor underclocks when under no or light load. Will turbo boosting to 100% all the time cause the processor life span to decrease?

Alternatively, is there a way i can undervolt it so the idle temps stay a lot lower?

 

It is not possible to under volt a 3rd Gen mobile CPU.

I have my 3rd Generation Core i desktop CPU running reliably at 4500 MHz so I am pretty sure your 3630QM will live a long life no matter what speed you decide to run it at.

If you don't have a lot of Windows background junk running on your laptop, your CPU should be spending the vast majority of its idle time in the low power C6 state when plugged in and preferably in C7 when on battery power. Post a screen shot of the C State window if you want me to have a look.

If the cores are spending over 90% of their idle time in C6 or better then it is not going to make any significant difference whether your CPU is running fast or slow. Try using the Windows High Performance power profile and compare when the Minimum processor state is set to 5% vs when it is set to 100%. I don't expect you will see a huge difference in core temperature but that can depend on what background tasks you have running.

You can also try disabling turbo boost but you are probably going to find that there is not a lot you can do when a manufacturer fails to put some thought and common sense into their fan profiles.

If you have an Nvidia GPU, turn off GPU temperature monitoring. Constantly monitoring the GPU temperature defeats the purpose of Optimus and prevents the GPU from reducing power consumption. The next version of ThrottleStop will be more Optimus friendly to prevent this from happening.

 

Damn, i read about someone undervolting the i7 on their laptop, although that may have been a different gen. Is it possible to undervolt a 4th gen i7?

I don't think i noticed any difference when the min processor state is set to 100%...

Where's the c state window? And what would disabling turbo boost do exactly (and how do i disable it)?

 

Unclewebb,

Are you planning on updating Throttlestop to support the new chipsets?

As always, Thanks for your work and dedication to the community.

 

Haswell support is on the top of the things to do list. I might release a beta version this weekend or next weekend. I need to finish adding and testing some new 3rd Gen UM features before releasing the next version

 

Why it isn't possible to undervolt i5 3210m? -.- I could undervolt the CPU of my old Dell inspiron/vostro with Santa Rosa Hardware (T7100 or something like that) and it made a huge difference (and overclock it 200mhz with throttle stop, but that doesnt make a big difference xD).

Mobile Haswell CPUs are possibly to undervolt or what? Oh man and I bet the first and second generation of core i-CPUs are also able to undervolt and I bought a laptop with a fu*king ivy bridge. Damn.

 

Ok it seems that every mobile core-i processor cannot be undervolted. That's ! Is there really no way to undervolt them? Is there any reason for it?

 

Can someone please clarify the following.

I am getting a laptop with the i7-4700MQ, which is rated for 2.4-3.4 ghz.

If i use throttle stop to set CPU to 100%, that means the CPU would run at 3.4 ghz if it's on a single core. What happens if more than 1 core is being used? Let's say the only thing i am running is a game that utilizes one core and some background processes (like a web browser). Would the CPU use 1 core, or 1 core for the game and 1 core for the background processes?

Is turbo boosting to 3.4 ghz the same as overclocking? If no, can i go above 3.4 ghz when OCing (and if yes, how can you do it?)