Crash on 1.03v gtx 485m

Hi all! Long time lurker here!

Anyway, I recently flashed my 485m vbios with the 1.03v modded one which has been floating around this forum. Everything went smoothly, new voltage showed up on gpu-z and nvidia inspector.

However, I experienced random crashes (black screen and computer reboots itself) at clock speeds which for me are perfectly stable on the original 1.00v bios (650/1650 for example). There don't seem to be any crashes on stock speed. From what I understand the 1.03v bios should allow me to attain higher clocks so I really can't understand why it is causing crashes at clocks which are perfectly fine with the lower voltage bios. It isn't the temperature which is causing the crash either as the gpu-z logs show the temps before crash in the 84-86 range. The error message on reboot reports as Blue Screen.

So far it has crashed on crysis 2, dx: hr and the 3dmark 06 test. The crash in crysis 2 and dx: hr seem random; but always within the first 5 min of playing (althouh doing multiple icarus jumps seems to be a sure-fire way of triggering a crash in dx: hr). In 3d mark 06 it always crashes at the test with the zeppelin and sea monster. I haven't tried it with other games but the above results would lead me to assume that they wouldn't be any different.

I also tried modding my own bios using nibitor and flashed that successfully too but didn't seem to make any difference.

My specs:

NP8150
i7 2630
485m
8gb
280.26 drivers (tried stock sager drivers and an older nvidia driver but didnt make any difference either)

Hope someone can suggest what's going on and hopefully a fix as well!

 

Hi, noob question. How do you flash the GPU's bios?? I am facing some difficulty with my card and I was wondering if a flash to a higher bios might solve the issue.
please help.

My issue on this thread: http://forum.notebookreview.com/sag...0-screenflickering-gpu-driver-crash-help.html
Sorry, i couldn't be of any use to you.

 

Duh! you flashed the bios, how sure are you someone didn't mess with it ?

Personally i would never flash a bios from the vga card unless it's official and necessary.

 

? I also edited my orig bios by myself using nibitor and flashed that and it didn't make a difference.

@mountainlifter: This thread has basically everything you need http://forum.notebookreview.com/sager-clevo/595765-flashing-video-bios-windows-7-64bit-help.html

 

i guess thats because you don't have enough power supply. What is your power supply?

A GTX 485M will consume more than 100W at 1.00V.
your cpu need atleast 45W for fully loaded.
Which means you better have a 180W or greater power supply.

I got 485m sli with 600W power. But still, I can't oc more than 650/1600 although I can easier oc to 740/1700 with only one card. In my case, I guess it not about PSU. I doubt that clevo has limited the power allow for two video cards in order to control temperature.

 

btw, even when I oc to 740/1700 with SLI enable, I have no problem in gaming and runing 3DMark's. But when I run furmark, the laptop will just shutdown in a few mins without blue screen or video card driver resetting. It just shuts down. = = I guess that's obviously a lack of power supply.

 

My power supply is the regular 8150 brick...so 180W. Don't think thats the problem as lots of people here and also on the mvk forums don't seem to have problems running 650/1600 and above on 1.03v.

 

bump......

 

Came back to say thanks. THANKS!

 

Np! Hey be sure to tell me if the 1.03v works out for you

 

So, people are trying to flash the bios so that it jumps to 1.03v when under load?

But mine is already going from 0.85 to 1.03v as it is!


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That's really really weird...you sure you've never flashed your vbios before? When you go to the overclock options in nvinspector does the voltage slider also show 1.03v?

EDIT: Oh wait just checked mine, it shows like that also. I think its an error cos if u check under overclock options it will show 1.00v. I believe gpu-z also shows 1.00v

 

Okay, so i've been reading and reading.

q1.Seems to me flashing the 485M with the modded bios is just for increasing to 1.03v?!

q2.Why can this be done along with OC in the MSI afterburner or Nvidia Inspector?

q3.The 1.03v is not an official bios update for the card is it? I mean it doesn't fix any bugs or anything does it?

 

@mountainlifter

q1: yes
q2: The nvidia bios locks the voltage. That's why the slider is maxed out/locked at 1.00v in msi or nvinspector
q3: No it doesn't fix anything

Oh and to anyone out there who knows something about gpus...if the voltage for a card's highest state is set to a certain value, would it be correct to say that it draws that voltage for whatever clock speeds set? (providing it stays in that state of course) So if i set my 485m bios to 1.03v it draws 1.03v whether the clock speed is, say, 575 or 650? In other words, is it true that for a given voltage the gpu consumes the same power regardless of clock speeds?

I ask this because I've been doing some further testing and it looks like the 1.03v is stable at stock clocks but not at any significant overclock (including overclocks which are stable on 1.00v). If the above paragraph is true then this would seem to rule out that my crashing is because of insufficient power supply no?

And if it's not because of insufficient power supply then I really can't figure out what the problem is. Someone please help!