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As the title suggestests i tried this today.I used MSI afterburner v2.0 on my Gigabyte GTX460 1GB.

I unlocked the Voltage slider in afterburner and reduced it from the stock 950 Mvolts down to 837Mv whilst running stable at that voltage

To test this I did it whilst running Octane in pathtracing mode on one of my scenes to heavily load the GPU.

The Results

The Card temps went from 69 deg to 60 deg whilst the GPU was fully loaded.

The Fans are now also quieter as they are now spinning at 40% .

The results you get will depend on the make and model of the card you have , but if you are running a multicard rig this may help the temps in your rig together with your noise levels and even your Power consumption.

Food for thought.

If you decide to have a crack at it , please feel free to post your results here.

There shouldn't be problems with this, as long as the card is stable. Though it can cause calculation errors that may not be corrected without the ECC found on the Quadro and Tesla cards. Typically its these errors that trigger a lockup or freeze type crash.

Qtoken wrote:There shouldn't be problems with this, as long as the card is stable. Though it can cause calculation errors that may not be corrected without the ECC found on the Quadro and Tesla cards. Typically its these errors that trigger a lockup or freeze type crash.

It's OK

minor lockup occured when hammering the card using 825 Mv

I moved the voltage up , clear of this.

The 837 Mv is running stable.