New and improved M15x CPU cooling mod! Guide and pictures!

I would like to know this too. Would it work with the CPU + GPU fans? If so, I will order 2 asap lmfao!

 

indeed very useful information, please confirm this.

 

I had to try to do some sort of mod. While mine isn't as extensive as King's...It does a better job of cooling than stock. ;P The notebook cooler had only 2 little cheapo usb powered fans that i removed and added 2x 120mm antec cooling fans and one 80mm antec cooling fan to the cooler itself. I also added another 120mm fan on the right side. If that wasn't enough, I used a dremel to cut 2 openings for the GPU and CPU to add a mesh cover and to add copper heatsinks. This would allow me to have more airflow and possibly cool the heat generating suckers to be somewhat cooler. It does not top past 70C so far, so I'm happy about that. Any suggestions on improving this? Thank's in advance.

 

The fan itself measures around 6cm (without bezel and etc). Would it fit is up to you, I don't have M15x in front of me, so I can't get measurements. For me it was a really tight fit (less than 1mm on each side, you can see it almost touches the CPU radiator )



If you have less than 6cm, you could consider GT627 fan (around 5.7cm, again fan itself, no bezel) - it has far more blades than yours (it was meant to cool 45W CPU and 50W GPU), and runs almost silent compared to the jet engine that M17x's fan is

Whatever you choose, you have to check the pin-out if it's the same for you (MSI's fan is 3 pin (no PWM), so you'll have to use your connector and leave the PWM empty), also the direction of rotation (depending on it, it will be top or bottom mounted). Happy modding and good luck

I'll save you a bit of a hassle - both would have to be top mounted, so you'll have to add thin copper sheet on the bottom (since yours is bottom mounted). It also means that a lot of grinding would be required This is for the CPU, I haven't checked the GPU, but you have starting point

 

11.4cfm and a lot of work lol. Each of my thermal take fans delivers 50cfm each lmao!

It would of course help a lot though! Beats the 7.8cfm our fans are rated for. Please get a used M15x and join our modding club. This baby with my mod and your fan mod ideas put together could easily do 4ghz on all cores!! (that is summer ambient of 25-26C!) 4.3ghz across 1 or 2 cores...

 

Of course it's a lot of work, but no external fan would do the miracles that a single internal fan would I've put insane number of external fans combined with the stock internal fan and a few cooling mods, but once I've changed the internal, THEN we were talking serious business My brother wants one, but he's not a power user, I'm saving for 8740w

A quick look at eBay shows that the CPU fan is 5.5 CFM, are there different revisions? It's quite of a bump either way, if they fit that is

 

That's true. Although my modifications have worked some miracles. Without the extra sinks they would be meaningless however. In fact the GPU has no sinks on it and the extra fans there make only 2-3C difference at load at the moment. With sinks temps would drop an additional 10C+ easily.

http://www.ebay.co.uk/itm/DELL-ALIE...-FAN-MODEL-KSB06305HA-74W61-NEW-/171036361075 my bad 7.7cfm I believe my fans differ though 7.7 vs 7.8 cfm. So is it possible to drop this 11.4cfm fan inside the fan chassis of the existing fans?

The 8740w? Well I can't argue with you there! It is a very nice and incredibly rare machine! Beautiful screen too I hear. My screen is pretty rubbish but I don't care much so are my eyes lol.
Anyways good to see your around here

 

That's what I mean - you are pushing very little additional air through the system's radiators.

The GPU fan looks pretty big, but I doubt that it would be straight fit.

Indeed, especially the display, that's why I'm getting it - 16:10 1920x1200 10bit S-IPS RGB LED Hopefully the MXM-B slot would handle some of the new stuff *cough*R9-M295X*cough*

Thanks. I love cooling mods, and I want to see 4-and-more-usable-GHz out of 1st gen i7

 

I dunno, the 8970M *aka* R9 M290X is hitting solid numbers on my M15x. I haven't had any temp problems or throttling issues once I solved the voltage and heat issues. The M15x still has some horsepower left in it...especially with an OC'ed 920XM!

 

Recently my ambient temperature has been killing me (around 30 degrees even at night, even more around midday). I've been trying a few things to make the cooling mod more efficient.
My laptop is now raised off the desk by an inch at both front and back. Having this additional elevation makes it easier to notice quite a bit of hot air being blown back through the fans...i.e. the air being pushed into the case, over the tiny heatsinks, has nowhere to go. So basically I need to add some kind of exhaust. Anyone got any ideas? I'm thinking of maybe adding the ability to have the bottom cover "dangling down" from the main chassis so the fans still blow on the heatsinks but the hot air can exhaust out the sides. This would be done with string so the bottom cover will easily fit properly.

 

Well, me and my brother were pretty close at getting one and you can bet that I would've disassemble it even before powering it on What I mean is, I have the MSI fan and the R4 GPU fan laying around, if you catch my drift Oh well, he'll bring an M17x-R2 RGB LED and M18x-R1 to play with

You can check this Air Extracting USB Cooler. I read somewhere that pulling the air out, instead of pushing it (like most notebook cooling solutions do, except C90 (King )) brings like 30% improvement.

 

It would be tricky to attach that fan to the M15x though! The vents at the back slope and the laptop is thick there. Might be impossible to get a proper vacuum.

Yes the C90 cooling rocked especially with 11,000rpm fans pulling The QX9650 only reached 65C at 3.5ghz with three of those suckers on full blast! If only I had more power I could have hit 4ghz haha. In the end I went with the X3380 that ran 3.5ghz all day under 60C.

 

They come with various silicon (I guess) attachments. Browse the site for "Air Extracting Cooler" and you'll see all the models. There are externally powered ones as well (ETS)

Yeah! How big were those fans?

 

Same as the originals. The originals did max 9300rpm. I looked up the model numbers and there was a model faster but the same size. Opened up the fan module and slotted in the new fans x 4. I then modded a fan controller to independently control the gpu fan and the cpu fans. Here is a link to my old baby back in the day! https://www.youtube.com/watch?v=6JOcAfNx5v0

God I miss that thing!

That ETS fan looks interesting! Is it really that powerful though!?

 

I will try with fans pulling air out rather than pushing in but will need more velcro. Thanks for the tip.

Sent from my One S using Tapatalk

 

The stronger the fan, the better.

 

Dunno, I'm planing to try it at some point

That's quite hardcore With a mini tornado like this, there's pretty good chance to overspin the internal though

 

Simple solution! Remove the internal.

I would if the extraction fan did a better job!

 

I would guess that the system doesn't want to boot with the internal fans removed.

 

And you lose portability.

 

Decided to mount fans on a small stand underneath laptop so they are no longer attached to bottom cover. Temps not adversely affected and the fans make less noise and the highest speeds.

Cardboard was used for prototype only.

Sent from my One S

 

You are crazy !! XDDD
Look at the Notepal U3
good, nice and cheap

 

I've got one. It's crap. The holes are too small and nowhere near enough airflow makes it to the laptop.

Sent from my One S

 

How does the laptop sit on top?

 

Its resting pretty high up on some makeshift laptop feet.



Seems to be working well and fans operate much quieter.

Sent from my One S

 

How about attaching a slim 1-2inch fan soldering it to the heatsink unit? So it sits right next to the double copper bars right above the gpu? Just an idea, having said that, i got this K5 pro thermal grease added to the gpu squary components connecting the grease to the heatsink,and arctic silver 5 to the die, the temps go max 69c even playing watchdogs, skyrim, hitman absolution. Solid improvement on temps!

 

I now have gotmilk's CPU guys. I have immediately installed it using my +200mv mod but the chip doesn't like it at all. It seems stable at over 4ghz but then will suddenly crash to BSOD all the time. Also the GPU doesn't like it either as it won't play nice in games.

I figure the voltage is too high the quickly climbing temps do seem to confirm that this chip runs at higher voltage and isn't stable. My old chip ran at a fairly low voltage and thus was more or less stable. I will remove the voltmod and install my voltmeter to figure out a better more suitable voltmod tomorrow. Stay tuned. M15x will break magical 4ghz barrier properly soon!

Watch this space...

 

I read the full 920XM voltmod post recently for fun and came to understand it wasn't a simple case of increasing the voltage like you might do in the BIOS but increasing one particular VID that is used in combination with others to obtain the required voltage at any particular CPU usage. svl7 also indicates that if you permanently increase the voltage, you increase it at all the ranges as power draw increases:

I don't think its the voltage increase per say but perhaps a combination of VIDs that doesn't play well as power draw increases. You might try lowering your overvolt slightly so the voltage set ups are smoother?
(After you've read this post I'll remove that quote as not to annoy svl7)

 

Indeed. When I took it apart I was torn as to whether I should go back to basics or just toss the new cpu in there. I should have taken it back to basics no chip is the same.

I will remove the vid4 interconnect and run at stock voltage and install the voltmeter back in to see exactly what voltage I am running then I can consult the VID table to see which vid I need.

On the old chip only VID 4 worked. All other VIDs had no effect on the voltage. I believe this is because the chip ran at a much lower voltage than say SVL 7's xm.

I should have done this in the beginning. Itchy fingers I guess haha. Looks promising though. Once I hone this I am confident to attain my goal of 31x/31x/32x/32x (4.12 - 4.25ghz) stable in all tasks other than prime 95 or other 100% load orientated tasks that indefinetely stress the cpu. I rushed. Now I do it properly! Just arrived at work so have to wait 12 hours or so

 

Being hasty is never a good idea when it comes to pushing hardware beyond stock. Good luck with getting 4ghz+ stable. It may be that you need a much lower over volt to achieve this with gotmilk's chip.

Wonder how my 940xm stock voltage compares to the two 920xm's you've used. Are you using a standard volt meter? Would removing the small wire from vss instantly revert back to stock volts?

 

Well this is interesting. The voltage on the new XM chip at load is about 50mv higher than in my old XM. This could strongly attribute to it's ability to clock so high.

I ran 27x at 100% and temps reached around 90C in Prime 95 after 5 mins with cooling on max. I am using rubbish MX 4 for testing purposes though. I find ICD to be more effective but haven't enough for constant repastes.

Anyways old chip at max stable 24x in Prime 95 voltage around 1.11V new chip at 27x stable 1.165 and at same multi in TS bench 32M it reaches 1.198V!

From what I can see only VID 0,1,3 or 4 would work. It seems this chip consumes more power than even SVL 7's meaning +200mv voltmod is pushing past the limits of the voltage circuits and cpu tolerances!
I will first try VID 1 (+25mv) and then VID 3 (+100mv) VID 3 according to the table should work VID 1 might or might not. Let's go!

 

Yes it is that easy.

I didn't play with it yesterday. Just running 3.6ghz while trying out FC4.

Really un-optimised rubbish at the moment. The 680M cannot run it properly!

 

King care to share your throttlestop settings for x27 and above multis? I definitely managed to complete a few benchmarks on x27 on four cores before but I can't remember my settings.
Its not too keen on achieving that now and I'm wondering if I've got my throttlestop set up wrong. Which version of throttlestop are you using?

Happy OCing
Here is the currently world record (for a 940XM) 4355 Mhz using an M17x R2
http://hwbot.org/community/submission/1060537_stamatisx_cpu_z_core_i7_940xm_4355.86_mhz

svl7 managed 4154 Mhz on his overvolted 920xm in M15x
http://go.hwbot.org/submission/2202343_svl7_wprime___32m_core_i7_920xm_6sec_56ms/

 

I already tried 1 multi lower than that world record and it worked. The voltage simply was too high though for the system to remain stable for any length of time beyond some simple benchmarks. I could have broken that record most probably..

I am hoping to achieve a 25-50mv increase in voltage first and see what that brings me. A usable 3.8-4ghz across all cores doing intensive tasks such as prime 95 is more important to me. Then again I will try 100mv too and see if I can get close to that record. There is no doubt this is a great chip and it should go far.

For it not to throttle I need to set the tdp to 115W! This is a lot different to my other XM which I never have had to put over 90W even when OVed! Temps in prime reach around 90C which is to be expected. So for all intents and purposes other 100% load tasks max 85C. Not shabby at all. I reckon cooling wise I could handle up to 50mv more at 100% load 100mv more for gaming and benchmarks. At 3.2ghz in prime 95 my other XM reached 80C at 50mv less power. So 50mv seems to add about 10C to load temps. Still that I can accept. 400mhz boost for a 10C rise is fine by me. 4ghz might be doable at sustainable temps under air cooling. That would be a fantastic achievement! I would love to video encode at 4ghz 100% load and have temps under 99C sustainably for hours. That would cut some time and would equate to a massive 100% OC over stock haha plus it would help heat my flat!

Win Win right! Almost forgot I use v4.10. Old but no point updating for the old XM's new versions bring nothing new to the old chips.

 

Update. I tried VID 2 and the machine wouldn't post. This happened the last time I tried VID 2 with the other XM. It is because the pin can't get contact to its socket.

VID 3 also doesn't work. I typing now with it installed. It has no effect on load voltage. It is the same as stock.

Bit disappointing. VID 4 works fine but is NOT stable with this chip...I am going to have to find even finer wire to try VID 2 again! How I will install that is going to be a challenge already fiddly as it is.

Not tonight though twice is enough lol!

 

Made a new thread to report my recent work on the 920xm.

 

i was browsing the web and found these fans
http://www.cryorig.com/xt140.php

maybe they will help with your airflow/size ratio?

 

Presume they are three pin fans? The fans I and King currently used are USB powered with is easier and maintains portability without the need for an adapter or PSU!

 

i would assume you can just splice them into your current usb adapter. they would solve the aiflow/size issue that you have

it says they are pwm. so technically they are 4 wire fans

 

So I'm contemplating a mod like yours, I'm going to purchase a spare GPU heatsink. My thoughts are to grind down the small "nubs" and try to increase the heatsinks mass with a few heatsinks like you have done, but retain the profile that if I want to use my lower panel I can simply put it on (normally it's off - the lower cover that is).

Mind if I ask you to share your methods of securing them (compound?) and what heatsinks you recommend? I haven't read through this entire thread yet to know if it's already been mentioned.

 

I found an excellent 140mm USB fan http://www.amazon.co.uk/AC-Infinity-MULTIFAN-Receiver-Playstation/dp/B00MWH4FL4
This thing is a beast, produces a lot of airflow and is very quiet too. No variable speed control though, just on and off.

I've screwed this into my Cooler master U3 pad and it works very well indeed. I'll post some pictures when I get home. The whole of my laptop now runs cooler, even the left side near the back that used to get very hot on long gaming sessions.

 

Sounds very cool pun intended. Hopefully I will be able to carry out my internal fan mod next year ?

Faster fans inside existing standard fan housings...

 

Fatboyslimmer, can you please send pictures of the cooling pad + fans?