|GeForce 8800 Graphics Performance: GT vs GTS vs GTX|
|Reviews - Featured Reviews: Video Cards|
|Written by Olin Coles|
|Friday, 25 January 2008|
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Crysis Benchmark Results
Crysis uses a new graphics engine: the CryENGINE2, which is the successor to Far Cry's CryENGINE. CryENGINE2 is among the first engines to use the Direct3D 10 (DirectX 10) framework of Windows Vista, but can also run using DirectX9, both on Vista and Windows XP.
Roy Taylor, Vice President of Content Relations at NVIDIA, has spoken on the subject of the engine's complexity, stating that Crysis has over a million lines of code, 1GB of texture data, and 85,000 shaders. To get the most out of modern multicore processor architectures, CPU intensive subsystems of CryENGINE 2 such as physics, networking and sound, have been re-written to support multi-threading.
Crysis offers an in-game benchmark tool, which is similar to World in Conflict. This short test does place some high amounts of stress on a graphics card, since there are so many landscape features rendered. For benchmarking purposes, Crysis can mean trouble as it places a high demand on both GPU and CPU resources.
The smaller resolutions are used to concentrate the testing and place demand onto the GPU, thus offloading some dependency on system resources. Even still, Crysis appears to have a preference for the new graphical interface; even if it only hints at it in our results.
Even without Anti-Aliasing turned on, Crysis keeps both of the G80-based GPUs well below 60 FPS. It's clear that the CryENGINE2 is a heavy hitter, as the ZOTAC 8800 GT AMP! Edition outperforms the GeForce 8800 GTS 640MB by almost 24%. Alternatively the GT is outperformed by the GTX by just less than 1%. Even with more vRAM available to it, the older 8800 GTX just barely offers the same performance as the G92 GPU paired with the PCI Express 2.0 graphics bus.
At 1280x1024 resolution, the results are still excellent but nearing the 30 FPS performance threshold for acceptability for both G80 units. In terms of performance, all products maintain nearly the same performance ratio, which still gives the ZOTAC GeForce 8800 GT 512MB a very big frame rate improvement over the GTS but slightly behind the GTX.
Surprisingly, the three GeForce 8800 series products maintained a practically constant performance ratio between one-another throughout the Crysis benchmark testing, which is a good thing in terms of test consistency.
At the end of our real-world testing, ZOTAC's 8800 GT outperformed the overclocked G80 GTS by a significant margin, yet is nosed out by the GTX. Perhaps the new G92 core architecture is to be credited, or the new PCI Express 2.0 interface which allows twice as much graphics data bandwidth. Or perhaps MSI's 8800 GTX doesn't offer much more than the overclocked GTS. Either way, our benchmarks certainly indicate that while the GTX beat the GT in the other tests, it matches performance in Crysis.
In our next test series, 3DMark06 offers synthetic benchmarks to the results.