Our testing methods
All tests were run three times, and their results were averaged, using the following test systems.

ProcessorAthlon 64 3200+ 2.0GHz
Front-side busHT 16-bit/800MHz downstream
HT 16-bit/800MHz upstream
MotherboardAbit KV8-MAX3
North bridgeVIA K8T800
South bridge VIA VT8237
Chipset driverVIA Hyperion 4.51
Memory size512MB (1 DIMM)
Memory typeCorsair XMS3500 DDR SDRAM at 400MHz and 2-7-3-3 timings
Graphicsinno3D GeForce 6800 128MB
Chaintech AA6800 128MB
PNY GeForce 6800 GT 256MB
BFG GeForce 6800 GT OC 256MB
eVGA e-GeForce 6800 Ultra 256MB
Graphics driverForceWare 61.76
Storage

Western Digital WD360GD 10,000RPM Serial ATA hard drive

Operating SystemWindows XP Professional
Service Pack 2 RC2 and DirectX 9.0c

Since we've already covered GeForce 6800 GT and Ultra performance great detail, I've only rounded up a couple of games to benchmark today. Since this is a comparison of GeForce 6800-series board vendors, you won't find any results for ATI's Radeon X800 series graphics cards. You can read more about Radeon X800-series performance here.

Again, I want to reiterate that the purpose of this comparison is to highlight differences between manufacturer implementations of NVIDIA's GeForce 6800-series GPUs. I'm only showcasing the performance of Ultra, GT, and vanilla GeForce 6800s to give you a rough idea where they sit in relation to each other, and to examine how much of a performance advantage our overclocked-by-default cards have over the stock-clocked competition.

We used the following versions of our test applications:

The test systems' Windows desktop was set at 1280x1024 in 32-bit color at a 75Hz screen refresh rate. Vertical refresh sync (vsync) was disabled for all tests. All of the 3D gaming tests used the highest possible detail image quality settings except where otherwise noted.

All the tests and methods we employed are publicly available and reproducible. If you have questions about our methods, hit our forums to talk with us about them.