Not too shy to talk
Joined: 2008/12/20 17:26 Last Login
: 2018/2/23 11:28
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@Rob
I think on paper x1000 and x5000 should have same video bus speed.
X5000 + Cow3D is 1.5x faster than Cow3D on x1000. X5000 MIPS rating is 1.5x higher than x1000. (per core)
So, to me it is because of the CPU. (unless the second core is used, but I think it can not be, as Cow3D + Warp3D are "legacy" SW...)
++ SAM460 results are superb good in cow3D, as it has 1/2 of the video bus speed and 2/3 of the performance of the PA6T core, but still it manages to perform 4/5 of x1000 speed.
(at the same time SAM460 reach about 1/2 of x5000 speed, more than MIPS would "hint") +++
Now I realized that it could be that the SW is just better optimized for the core of a SAM460 by the compiler.
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