setonfire

Till you don't sniff an acrid smell (kidding) Well... until the temperature stays below 90C, you don't have artifacts and your driver doesn't crash.

I used brand new prema's modded bios that works like a charm, keeping the turbo longer and squeezing all there is to squeeze. About vbios, I used as i told svl7 MSI overvolted to 1.025V at the frequences of 1083x2497. I think i'm really to the limit for what concerns the gpu score. For what concerns the cpu i guess i could gain in the overall test score only replacing the processor, cause the i7 2760qm is bottlenecking. And talking about the temperatures I didn't try with prema's fn+9 for blowing fans at full throttle cause i can stay below 83 degrees with 20C ambient, but what i can say is that the result is obtained just for the few seconds of the 3d mark test. I could not play with these high frequencies for temperature problems, throttling and driver crashing. In any case, I played about 1 hour with 1.025v overvolted slv7 bios at 1053x2497 with no crashes and with temperatures below 85 degrees only removing the back cover of the notebook and blowing air with a notepal u3 with fans directly to the heatsink. Only in these way i can let the temperatures drop about 10C. I can play even over 1Ghz frequence on the core and beeing stable during the real gaming not just to achieve a cool score at the benchmark. With back cover on I can stay stable at 915/2250 that is about 25% overclocking more, but some users can push up to 1Ghz staying below 89C in gaming without throttling. EDIT: Ok, I think I reached the final destination right now. http://www.3dmark.com/3dm11/6208959 Broken the 9K threshold with 9038 GPU Score @1097x2497 --- EC .12 Prema edition, clevo vBios overvolted 1.050v by svl7

Hmmm.. 9K GPU score? Where is this bios?? I want it Here is my score but it's really extreme, i don't think i can get further, cause the bottleneck is the old 2760qm. The GPU score anyway it's almost 9k. NVIDIA GeForce GTX 680M video card benchmark result - Intel Core i7-2760QM Processor,CLEVO P170EM score: P8149 3DMarks @1084x2497 - Driver:314.07 - vbios 1.025v MSI

First of all Prema, thanks for the great job. Just one doubt anyhow. Considering that downgrading EC/Bios to previous versions looks like to be a risk, on the contrary, upgrading this modded EC with new official versions, or replacing with the same .12 official version, could give any problem eventually? Thanks in advance for the clarification.

About the clock it's up to you and how much your card remains steady and the dissipation system is efficient. During 3DMark I tested at 1058/2600 passing the bench (at 1V overvolting), but just for the benchmark. In game that crazy overclock crashes and obviously is not suggestible. Personally I found a good compromise at 915/2000 to avoid throttling at 89C after a while with Crysis2 and BF3 that are the games that actually stress much more the GPU and produce more overheating. Other games i can push further even over 1000/2400 that the temperature remains approximately at 80-85C . At stock frequences don't have any problem with any game, the GPU remains pretty cool (below 80C) , but obviously the purpose of these modded bioses is to squeeze all the juice out of it Depending even on the ambient temperature you're gonna burn faster or slower. So, you must tune up your overclocking freq. to stay always below 90C. About monitoring temperature you can use MSI Afterburner 2.3.0.

Just for information and to be helpful. As told in the previous post I got a P170EM with bios version 1.01.05 EC06. I installed the modded vbios 915Mhz 0.962v and I bricked the card. Fortunately i found the way to flash back the card. So I updated the system bios to the version 1.02.14 with EC 1.02.12 and reloaded the same vbios. The system started normally. So, if you have to update the gtx680m vbios with the downvolted version 915Mhz/0,962v be sure to have the latest bios version for the PxxxEM series.

Sorry, I was so concerned I did not read the answer right in front of me. Yes, it can be this incompatibility with laptop bios. Indeed my supplier is european and for what i know, they delivery bios that apparently are for the PxxxEM generic series, but a little different from usa clevo supplier. For example the fn+1 that turns on the fans at maximum speed feature is disabled on my model but on other same usa model is instead enabled. So it comes a little bit tricky if this is true, cause it needs really to be carefull flashing new vbios.

I tried the Clevo 915Mhz 0.962 on the P170EM and I bricked the card. I readed it was not suited for PxxHM no indication for the EM series so I tried. Fortunately just the P150HM allowed me to flash back the card and work it again. I had nothing than a screen with Intel sandybridge SVGA etc etc and from there no F2-F7 options. Swapping the card on P150HM instead after 3 beeps i booted from the usb and flashed again. So are these bioses good for the PxxxEM series? I noticed that the lenght of the files are about 157kb against the 88k of the original or the MSI based bios. I've seen furtherly that all the clevo_revised version have higher lenght except for the .29. Now I'm back to the MSI based bios and i'm a bit scared to have other experiments, but the undervolted version is really what i'm looking for cause i got some throttling with very intensive gpu using games.

No, on my P170EM there is not that feature. I use notebook cooler and without the backplate i dont have any issue even at 1032x2400, the maximum boost at 1,037V Anyway, i repasted and replaced the GPU copper heatsink and with the backplate on my temperatures now are -5C lower than before. Still have some throttling at 900x2200 on crysis 2 after half hour of game. Not a big problem cause the fan at the max speed lowers the temperature below 89C, the throttling threshold. With maximum boost instead (1032x2400) the throttling comes quicker obviously. I think that modifying the backplate will solve the problem and i can run full speed easily. I didn't try the undervolted bios yet. How much you can push with the boost?

Hi, I've got a clevo p170em with vbios modded by svl7. It works pretty good having a great boost in performance and good stability (no bsod). Anyway i experience throttling cause the temperature on some games that use GPU intesely reaches 90C. Is that normal with the modded bios, or the temperature should stay below 90C? Environment temperature is about 23C. The only way to stay in the range is removing the backplate. I tried to repaste but the result is the same. I even noticed that sometimes when the temperature hits 90C the fan spins to maximum speed and the temperature gets easily down to 86C to grow up again and bounce between 86 and 90C. Could be possible to anticipate the max speed fan to avoid the temperature reaches that throttling setpoint?