Dell :: 8800m SLI, Volt Modded, Running At Stable @ Over 700core/1000mem

DISCLAIMER! - I will not be responsible for what you do with your cards. However, I wanted to create a thread that would show those that want to play what the 8800m GTXs are capable of.

Before we get started. Let me explain the theory and the reasoning behind this whole thing.

Dell is not in the business of creating computers that burn up, and as most are very aware, they factor in a lot of room for overclocking and game enthusiasts that want to push their hardware to the limit. Here however, they did a "no no" IMO. However it's also the only way that they could tame the beast the 8800 is.

At the heart of the problem is the Dell PSU which is only rated at 230 watts and is close to being maxed and general heat generated by the cards themselves.

The standard 8800s as they arrive from dell, are set to run @ 1.00 volts. This however is a long shot from desktop versions of the cards running @ over 1.3 volts which are near identical in architecture. (some desktop users volt their's to over 1.4 volts!!!!)

What gives? Well from doing a little research, I found out that Dell, is not alone in undervolting these cards and Clevo along with dell does this as well except they undervolt even more! Down to 0.95V!!

Now the benefit of the undervolt, is that you generate a lot less heat. However the less voltage you allow the card, the less stable the card becomes at higher clock frequencies. From reading the posts on this forum alone, I noticed that most people run into artifacting between 620mhz and 645mhz core clocks and 950 memory clocks. The reason for this, is that at those clocks, you are asking the GPUs to do more work, then the voltage supplied to them will allow. All cards are different, but for the most part will run into stability problems before they run into heat problems. Testing this, I found that the GPU fans don't even kick on high during Crysis a game that should push any GPU and its fans to high................................