So if I'm fill rate limited.....

[kjliew]

The G400 fillrate as measured by 3DMark99 MAX is not affected by CPU. Goto http://mgatools.matroxusers.com/ and look at the benchmark scores I posted last time. There is a comparison of G400 fillrate on Pentium II and Pentium III. You won't see much difference in fillrate from PII-450 to PIII-450.

However, based on the 2 gaming framerate in 3DMark99 MAX, the PIII can make better use of the fillrate. Excess fillrate will render useless if the CPU are not fast enough in processing geometry data to be "filled".

The most effective way to increase fillrate of G400 is by overclocking or memory optimization through MGATweak.

[DarkSyd]

Thanks to everyone that has replied. I've learned more about my G400 from this CPU upgrade than I had expected.
My Q2 scores did not increase as I had expected, which surprised me. However, running my G400 at 115% resulted in a 5 fps gain at 1280x960 (40 > 45). That IMHO is a considerable gain for very little risk. I already had a fan on my G400 (if it has a heatsink, it should have a fan....) so I doubt 115% is going to hurt anything. The framerates also went up in UT, 1024x being very good for me now. 32 bit still blows, but I think that's the 16mb memory.
Again, thanks everyone. I'm one happy camper

DS

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Cel 366@550 on Asus P2b (1011), 128MB, OEM G400/16 (PD5.30 115%), Quantum Obsidian S12, Fujitsu 5.25gb, Maxtor 4.3gb, Pioneer slot load 32X, MX300 (Aureal 2040), Intel EtherExpress 16, Grey Cat, Orange Cat (still MIA)

[Dyre]

Fillrate is basically dictated by the chip on your vid card. Fill rate is the ammount of pixels your chip can push to the monitor in a second. So a CPU shoudnt affect fillrate, unless your CPU was doing the final 3d calculations(software rendering) By o'cing the matorx your are increasing the speed at which it pushs pixels, so you will be increasing fill rate. With small textures the chip on the vid card limits speed, once fill rates are high memory and AGp bandwidth will affect FPS more.
Now you should get faster FPS with a faster cpu, but its not really incresing fillrate per-say.