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Synthetic Benchmarks: Bump Mapping, Sprites, Etc.

In conclusion we would like to run different bump mapping tests and a few tests checking the sprites performance.

EMBM bump mapping is still a problem for DeltaChrome, even the S8 Nitro model falls behind every other testing participant except GeForce FX 5600 Ultra.

When we use Dot3 method the situation turns completely hopeless for the newcomer: it is the slowest, even slower than GeForce FX 5600 Ultra. If we keep in mind that Dot3 method actually uses two textures (one of them is the normal map), we can conclude that DeltaChrome owes its disaster to the low fillrate during 2+ textures processing.

The results of the Ragtroll test were actually quite predictable: both DeltaChrome solutions work at pretty low core frequencies, and the vertex pipelines are not efficient enough to make up for low clock rates. As a result the solution loses to every single competitor except GeForce FX 5600 Ultra.

The sprites test comes next. It actually also tests the vertex processors performance, though the situation here is more interesting than in all other benchmarks, I should say: in low resolutions the performance improved notably due to higher working frequency of DeltaChrome S8 Nitro. As the resolution grows this advantage vanishes because of the low efficiency of the memory subsystem. RADEON 9600 XT also suffers from its slow memory. All in all, DeltaChrome cannot boast much: it was completely defeated by all the rivals.

Summing up the results obtained in the synthetic benchmarks, we can point out only one positive improvement: DeltaChrome can now process pixel shaders somewhat faster. And that’s it. In general the situation is pretty dramatic, especially in geometric benchmarks. DeltaChrome is very unlikely to ensure high performance in geometrically complex games with the vertex processors being that slow. As for the “Nitro” word in the name of the product, we have to admit that the higher working frequency does have its positive influence on the performance of the solution, though this influence is not that great at all. 325MHz is not that fast for a video processing unit manufactured with 0.13micron technology. Although the current DeltaChrome processor still uses the old packaging. The final DeltaChrome S8 Nitro modification can be designed in an open-die package and also work at higher frequency, which has actually happened to GeForce FX 5600 Ultra, as you should remember.

 
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