Hvad gik galt for Nvidia med NV3x




Anandtech har skrevet en artikel om Nvidia's NV3x kort, og hvordan det kan v?re at der er s? stor forskel i performance i forhold til NV40.

En ting er sikkert, Nvidia har sikret sig at NV40 ikke blev et flop set ud fra performance....



In talking about pure pixel drawing power, NV35 and NV38 didn't have it too bad as their clock speed helped push fill rate up to 1800 and 1900 Mpixels/s at their theoretic peaks. This number is simply a multiplication of how many pixels can be drawn at a time and clock speed. The NV3x architecture could also push twice as many textured pixels (if multitextureing was employed) or twice as many z / stencil operations as pixels. The problems with performance in NV3x didn't come in theoretical maximum limitations, but rather in not being able to come anywhere near theoretical maximums in the real world due to all the issues we have explored in addition to a couple other caveats. Here's a brief rundown of the bottlenecks.