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Old 06-11-08, 06:29 AM   #42
walterman
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Default Re: GTX280 CRYSIS 1920*1200 VH Average FPS Reached to 36.81!

Quote:
Originally Posted by SH64 View Post
Are you sure its the bandwidth limitations because hell_of_doom227 says its the crappy coding of the game ..
In this game, you need both (shading power & bw), cause the shader programs are very complex (check the shaders.pak file of the game).

It's like, rendering power = bandwidth / (number of shader instructions per fragment (or flops)).

When you raise the AA level, you need to render more fragments, so, you have more accesses to your memory. If you raise the AF level, you need to read more texels from your textures, to filter them, so, you need more TF units & more bandwidth.

You cannot raise only the shading power and expect the performance to be linear with it. If your memory cannot feed properly the data that your GPU needs, it will be stalled & idling till the data is ready.

This monster has almost 3x times the shading power of a G80, but only a 45% higher bandwidth. GDDR3 in this card is a mistake.
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