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Where are the VRM chips on a GTX280?

Dutch Guy

Dutch Guy

Dutch Guy

Soldato
Joined
18 Oct 2002
Posts
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Location
Amsterdam,The Netherlands
Recently I am having some strange issues with Fallout3 and NFS Shift where the game locks and after a few seconds it unlocks but all text is garbled and unreadable.

I am suspecting that the VRM chips are too hot as I ran GPUz and it said the VDDC temps were >110C

So I thought I would point a spare 120mm fan towards that part of the card but where are they located?
 
Dutch Guy said:
Recently I am having some strange issues with Fallout3 and NFS Shift where the game locks and after a few seconds it unlocks but all text is garbled and unreadable.

I am suspecting that the VRM chips are too hot as I ran GPUz and it said the VDDC temps were >110C

So I thought I would point a spare 120mm fan towards that part of the card but where are they located?
Click to expand...

The back end where the power connectors are.
 
What cooler do you have on the card, with the stock cooler you shouldn't be able to even see them. I have water cooling with the vrm's cooled with individual copper heatsinks and a fan pointing at them, in games they will go up to 60-70°C, in Furmak they will touch 100°C.
 
Bubo said:
What cooler do you have on the card, with the stock cooler you shouldn't be able to even see them. I have water cooling with the vrm's cooled with individual copper heatsinks and a fan pointing at them, in games they will go up to 60-70°C, in Furmak they will touch 100°C.
Click to expand...
Stock cooler, but I have the MSI SuperOC version that has default 700/1400/2300Mhz speeds so maybe they raised the voltage to get the card stable?

What I did though is remove the side of my case and a result of that is that the fan on the card runs slower as the core is cooler but maybe that has a negative effect on the VRM's as there is less airflow from the fan, sound logical?
 
I had to edit the fan profile on my BFG 260 OC as the VRMs were getting too warm in a couple of games one being left 4 dead - causing the image to lockup. I now have the fan ramp up much more agressively and seems to solve the problem - I don't think the stock cooling design moves enough air over the VRMs unless you increase the fan speed a lot.


I also noticed with newer drivers the fan speed seems to have a habit of sticking on default (40%) even in 3D mode and ignore temps :(
 
Tried last night with GPU-Z running and using Furmark, the VDDC temps shoot towards 110C and stay there, it was stable for a few minutes though, the fan did spin up to 100% though so that isn't a problem.

Maybe the 190.62 drivers just aren't stable enough on my system, any recommendation on what other drivers to use with a GTX280?
 
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