Which graphics card to buy?

David Gobbi dgobbi at irus.rri.on.ca
Thu Mar 30 12:08:16 EST 2000


On Thu, 30 Mar 2000, Sebastien Barre wrote:

> PC 2xPentium II 400Mhz, Windows NT4/SP4, VTK 2.3
> Creative Annihilator Pro GeForce 256
> 
> strips : 1023 kpolys/s @256x256 res.
> texture : 382 kpolys/s @256x256 res.
> 
> Whereas :
> 
> SGI Visual Workstation 320, 2xPentium II 450 MHz, Windows NT4.0
> 
> strips : 4360 kpolys/s @512x512 res.
> texture : 1031 kpolys/s @512x512 res.

Okay, so on the ErazorX adding texture reduces the performance by
60%, on the SGI adding texture reduces performance by 75%.  On 
the ErazorX, the bottleneck here is probably the geometry (don't 
forget that adding texture implies that you are adding texture
coords for all vertices), on the 320 it is the texture fill-rate.
The two cards are therefore operating in different regimes, so you cannot
deduce a useful qualitative comparison from these results.

This whole discussion is getting rather silly..

 - David

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