Quote:
Originally Posted by Schmidget
The 7900GT handles Oblivion much better, but thanks to the constant geometry and texture thrashing that occurs in the game, my framerates still aren't perfect. That's more of a CPU and RAM thing though.
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Oblivion's thrashing problems seem to be due to conservative cache management. Unmodified, there seems to be a hard coded limitation that prevents Oblivion from using more than 256 MB of VRAM, in addition to restrictive default cache settings. This is probably all due to the Xbox 360's rather limited (albiet, super fast) 512 MB shared VRAM/Conventional RAM (plus the 10 MB dedicated to the visual processor).
On the other hand, low frame rates are almost certainly due to the fact that Oblivion was designed to take full advantage of the 48 unified pipelines of the Xbox 360's ATI Xenos graphics processor, which gives it 6 GVertices of geometry transformation power (that’s 50% more than a GeForce 7950 GX2 SLI setup) – perfect for taking care of all that grass.