sliderider wrote:Is Quake timedemo optimized for Pentium instructions? That might explain why it runs better with a PoD than a Cyrix despite the slower clock speed.
dirkmirk wrote:For reference at 640x480 in Quake timedemo I got 27.0fps and 26.9fps at 800x600, cant remember the exact figures for the Cyrix 5x86-120 but its noticeably slower.
I would be surprised if the Cyrix 5x86-120 was a whole lot slower than the POD83. I do get 27.6 fps (nosound) in GLQuake w/Voodoo3 on a Cyrix 5x86-133/4x (LSSER, FP_FAST, RSTK, LOOP, BWRT optimisations used). Usually the 40 MHz graphics brings the Cyrix 5x86-120 close to the Cx5x86-133/4x for graphic intensive jobs. Perhaps it would score around 25 fps. The Am5x86-160, with its crappy FPU, gets 27.5 fps and FPU of the Am5x86-160 is 20% slower than that of the Cx5x86-133/4x.
By contrast, using the Matrox G200 GLQuake wrapper yields a messily 16.3 fps.
Sliderider, did you ever try your Cyrix 5x86-120/4x chip at 133 MHz?
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