http://www.bit-tech.net/hardware/graphics/2007/08/14/radeon_hd_2600_xt_vs_geforce_8600_gt/1
It looks like the 8600GT has an edge over the 2600XT.
On the other hand as long as you're using XP or 7 then it's fine to run both cards together with full driver packs for both cards.
It looks like the 8600GT has an edge over the 2600XT.
On the other hand as long as you're using XP or 7 then it's fine to run both cards together with full driver packs for both cards.