So, it's been pointed out that 200Mp/s would be adequate for high
framerate at 1600x1200. That seems right. So, why are all the other
vendors so bent on making their GPUs run at 500MHz?
Comments? Opinions?
Here is a comparison list for SGI hardware, but I have to add that SGI uses multiple chips on newer hardware. (The advantage of SGI designs over other designs has always been that they run a sustained pixelrate):
GZ = Gouraud shaded with hardware Z buffer GF = Gouraud Fill, ie. Gouraud shaded pixel fill rate, always in pixels/sec GFZ = Same as GF, but using hardware Z buffer due to texturing GF Tex GFZ Pix/sec pix/sec
O2: 66M 33M I2 XL: 89M N/A I2 XZ: 37M N/A CR Extreme: 78M N/A CR VGXT 200M 44M CR RE 180M (1) 320M I2 SolidIMP: 120M N/A I2 HighIMP: 120M 68.5M I2 MaxIMP: 240M 119M Octane SI: 120M N/A Octane SI+T: 120M 60M Octane SE: 120M N/A Octane SE+T: 120M 68.4M Octane SSI: 240M N/A Octane SSE: 240M N/A Octane MXI: 240M 118M Octane MXE: 240M 138M VW320 PIII/500 (13): 180M 120M Onyx EXT (4): 100M N/A Onyx VTX (5): ? 80M Onyx RE2 (2): 180M (1) 320M Onyx2 R: 448M 188M Onyx2 IR (9): 896M 624M Onyx2 IR2 (9): 896M 768M Onyx3000 IP (14): ? 484M
I can also add that the Octane MXE/MXI is able to run FlightGear (http://www.flightGear.org) at very reasonable framerates if it weren't for the fact that it has too little texture memory (16Mb max).
So 200Mps is not high-end, but will do for most applications.
Erik _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
