nVIDIA mobile Kepler 6xx MASTER overclocking guide. Workaround for max clocks/OC stability.

Hey man, we have basically the same setup (I have a DV7t). I'm a little out of my depth when it comes to setting up setting up throttlestop and forcing the P states. If it's not too involved, could you tell me what settings you've selected in throttlestop (the linked thread seems to just define each item in the program, but not tell what to change etc), and what command line values you used? I basically want to set my DV7t to exactly match your "1150mhz core/2800mhz mem (with throttlestop): P3030!" config. Those values look awesome!

Thanks man, hopefully it's not too big a PIA!

 

Just a friendly advice: the fact you got a similar or equal system doesn't mean you can reach the same clock speed he's got.
Each gpu is unique and different, some OC really good, some don't at all.
As for ThrottleStop, probably you need to check Set Multiplier Turbo, and first and second option.

 

Ya, I guess I kind of found that out this morning. Unfortunately both beta drivers for the 650 don't seem to want to work for me. Playing Witcher 2, I get an increasing amount of artifacts after less than a minute, until the game basically crashes. Seems kind of weird! Going back to the HP driver fixes things.

Thanks for the input re throttlestop. Do I have the right idea about the batch files?:

The bolded is all that I should change, depending on what OC values I'm able to achieve? And the italicized I need to change to 0,0,0, since my 650m is a kepler? And of course the 0,2 to 0,5 (as that's the middle performance state on my laptop). But everything else should stay the same?

Oh, and I forgot the most important question! Do I have to be using one of these updated drivers in order to be able to OC with this method?

 

How would I be able to OC my 680M SLI on my new Alienware m18x r2?

 

Yes, you set the clock offset to your desired level

Updating drivers is not necessary to OC, but sometimes might provide a fix or improvement to a game FPS or 3DMark score

Go to Techinferno and ask svl7 to unlock your vBIOS

 

That looks good to me. I didn't really play around with the batch files too much i just made a shortcut with the command line -forcepstate: 0,5. Then in order to OC the memory you have to raise memory in the turbo state before raising memory in the middle state. The core should OC just fine. And for throttlestop, just set the multiplier to turbo and check it. Then uncheck everything else (I read this in a guide and don't exactly know what this does). But most importantly, don't forget to press "Turn On" in the bottom right corner lol. I made that mistake and I was like wth is going on haha. Hope this helped!

And I'm on 304.79 so IDK if you can use the HP drivers. I'd give it a shot though if other drivers are giving you issues.

 

I recommend ditching the HP drivers, they are not optimized for gaming and overclocking

In throttlestop, you are supposed to check the top 3 boxes to [100% 100% Turbo] this overrides turbo boost limitation and you can turbo 24/7

All other features below is just useless power saving and thermal throttle (BD PROCHOT) feature, which can be detrimental in benchmarking and games

 

Thanks you two for the help!

So, my results. The stock HP driver definitely isn't as OC-able as what others have gotten from the beta drivers. First off, I can't seem to get the memory to go past 2000. neon, when you say "you have to raise memory in the turbo state before raising memory in the middle state," by "turbo state" do you mean P8? And then would the steps be (shorthand): cmd force p8>set the memory for p8 in nvidiainspec GUI>cmd force p5>set the memory for p5 in nvidiainspect GUI? Sorry, that confused me a bit.

Setting the memory to 2000 and the clock to 1100, I got a BSOD during the last stage of Mark3D 11. Rebooting and trying with 1000/2000, I got a score of 2630, which was about 330 better than I got when using MSiAfterburner. Also, this was without throttlestop.

So that's a definite improvement, but I still need to play around a bit more, and try to get to the bottom of why those beta drivers were failing with Witcher 2.

It's a good start though, thanks guys for your help.

 

Hi there.

Mine only got 2 performance mode.
Is this not normal?



Can only unlock on P8, which is obviously not the one to be forced and OC.

Appreciate the help.

Thanks.

 

Whaat? Try forcing p8 though, it might work

 

I meant raising the memory in the P0 state. So if mem in P0 says +0, then you can't go past 2000mhz in P5, but if you put in +1000 in P0, then you can OC as far as 3000mhz in P5. And use the GUI in NVidiaInspector, it's a lot simpler that way. But you still have to force the pstate first. Then you can figure out command lines when you have your definite clocks down. And yeah with 304.79 beta drivers witcher 2 is stable as ever with 1150/2800 and throttlestop. I'm on 1080p with high textures but a lot of things turned off.

I see your card is a GT640m LE, which isn't a Kepler card so you don't even have to force a PState nor use this guide. Just OC the P0 state and you're good to go.

 

It is a Kepler card... GK107

 

Tried before.
It act weird a little while, then BSOD. Scared me though.

 

Thanks svl7.

 

Good thread, will be giving it a look.

 

Hmm, is there a extra step I need to do to be able to access the sliders for the pstate 0? Because for me that state is all greyed out.

 

Ah, my bad. I should've noticed the GK107. NVidia is so confusing in their nomenclature as I've heard from several sources that the GT640m LE is a rebranded Fermi while the GT640m is Kepler. There seems to be two variants of the GT640m LE, in which one is Kepler and one is Fermi:

Kepler GT640m LE (GK107): techPowerUp! :: GPU Database : NVIDIA Mobile GeForce GT 640M LE (384SP)
Fermi GT640m LE (GF108): techPowerUp! :: GPU Database : NVIDIA GeForce GT 640M LE (96SP)

How misleading...

Sorry about that, Amal77. The fact that your card doesn't seem to have a middle P-State seems troubling, since as you know, that is the state we are using to OC. Did you try OC'ing the P0 state? You may be limited by boost clocks though.

 

No need to be sorry about.
The P0 as usual is limited to a maximum of +135MHz. Cannot be unlocked.

Hmmmm... could it be that they intentionally removed the performance mode.

 

Would it be possible to flash a GTX 660 bios to a Gt 640M 2g since they are basically the same card?

 

Why would you do that?

And it's not possible btw

 

you can't adjust the power target on mobile GPU's ?

What about turbo only MSI 680m has turbo enabled or can be enabled on Clevo and Alienware 680's ?

 

To make it a GTX 660, lol.

 

Why not just overclock it? much simpler... less risk...

 

What system is that from? Clevo/Sager/MSI/Dell?

 

Nispector won't work for me, the settings reset themselves. MSI afterburner is crashing my driver too, not sure why.

 

You have overclocked too high

 

Either that or you've installed the beta drivers... I call revert

 

Even with a +15 core clock nothing changes. GPU-Z reports the higher clock but the gpu never actually moves past default clocks. I am running a GT 640M/2 gigs DDRIII in a Gigabyte U2442N.

 

Did you update the Afterburner inf with the EULA statement? Afterburner won't do crap until you add that.

 

Wow, you have the Gigabyte U2442N.
How's the temperature on that thing?
How's the display?

Was supposed to be on my list, but got tired of waiting, so i opt for Sony Vaio S13P instead.

Btw, with a simple MOD, you should be able to turn it into a GT650M DDR3 easily.

 

Yeah that's what I would like to do, but I don't know how to mod it. If you could help me out I would appreciate it. Yeah, I have the Gigabyte system already, straight from Taiwan. The temps are fantastic and it's a great system overall aside form the matte screen. I am going to write a review on it soon.

 

Can't seems to find where the VBIOS is from the BIOS.
Maybe it is not integrated with the BIOS? I'm not sure.

 

Here you go.

Apparently U2442 has two vBIOS integrated in sBIOS to cover C, N & V models...

 

Cool thanks!

 

Oops.. Didn't look through deep enough...

 

Has anyone had any experience overclocking this laptop: Acer Aspire TimeLine M3 Ultra
Acer Aspire TimeLine M3 Ultra 15.6 inch Ultrabook - Black (Intel Core i5 2467M 1.60GHz, 4GB RAM, 500GB HDD, DVD SuperMulti DL, LAN, WLAN, Webcam, BT, Windows 7 Home Premium 64-bit, NVIDIA® GeForce® GT 640M): Amazon.co.uk: Computers & Accessories

I would appreciate any advice

 

Hello friends.My laptop is Acer Aspire V3-571G
I want to overclock my gt640m DDR3.
Can you help me?How unlocked gpu core?I want to overclock more than 135Mhz.How can I do it?
What used p-state in bat-file?

 

I have Asus N56VZ with 650M DDR3, how exacly can i dump the bios so it can be modded?

 

You can actually DL a BIOS from asus, just attach the BIOS by the forum (either here, bios-mods, or T|I) to svl or prema

You can try to overclock it using a pstate like the first post, but if it doesn't work, remember that you may have to figure out the pstate on your own

 

I'm trying apply this bat-file

nvidiaInspector.exe -setBaseClockOffset:0,0,135 -setMemoryClockOffset:0,0,500 -setpowertarget:0,111 -setVoltageOffset:0,0,0 -setGpuClock:0,2,800 -setMemoryClock:0,2,1000 -forcepstate:0,2

but GPU clock max 759(+135) gpu clock 1400(+500!!).Why does't work correctly?
What need pstate?

 

You might have to use another value rather than Pstate 2. So far it works on 650M/660M's. Unsure about 640M/640M LE

 

I don't know which one to use.Maybe p-state 0,1

 

Best I dared to achieve on a 680m was this ... NVIDIA GeForce GTX 680M video card benchmark result - Intel Core i7-3720QM Processor,CLEVO P170EM score: P6252 3DMarks

This was with a Clevo or A vortex III in the UK. Highest temp was around 70 degrees . I don't know anything about Vbios but afterburner seemed resonably stable. No dancing graphs.

 

It's possible, try

Can you give a screenshot? Because I'm seeing "324 MHz" on core clock reported by 3dmark

Also, which pstate value did you use?

 

I find that all my 3DMark11 runs report 324 MHz, whether I am running a stock vbios at stock clocks or an overclocked custom vbios.

 

3DMark11's GPU clock on the result page is captured before running the benchtool, it's not valid. What you are seeing on that page is the idle clock. The only thing that's valid is the FPS section and the scores.

 

I wont dodge this question as I saw that too which baffled me. My lap top is back with PCspecialist UK right now for a screen replacement but promise ill post those specs .

As for Pstate , youll have to point me at what you mean? Im pretty newbie im afraid.

 

Pstate is that "-forcepstate:0,x" value, X can be an unknown number for the 640M


@alpha, what clocks/custom vBIOS are you running?

 

It happened when I was running stock vbios with stock clocks (ie, the laptop as I received it from Reflexnotebook):

NVIDIA GeForce GTX 680M video card benchmark result - Intel Core i7-3720QM Processor,CLEVO P15xEMx score: P6040 3DMarks

...as well as when it was overclocked. I've tried unlocked Clevo and MSI vbios files, as well as overvolted versions of both, and regardless of my vbios and clocks 3DMark11 has identified my core clock as being set to 324MHz. The memory is read accurately, but not the core.

 

I may try this method to clock the dual GPU's in my NP9370 review unit since no drivers have allowed for overclocking of any amount.