Take a gander, 4870 1gb vs. GTX 260 core 216:
http://techgage.com/article/ati_hd_4870_1gb_vs_nvidia_gtx_260216_896mb_follow-up/
And the 8.11 article for comparison purposes:
http://techgage.com/article/ati_hd_4870_1gb_vs_nvidia_gtx_260216_896mb/
Excluding the dead space results, given the frame rates are more than fine at 4 mega-pixels for either card, its very very close. Bing bang poo I say.
http://techgage.com/article/ati_hd_4870_1gb_vs_nvidia_gtx_260216_896mb_follow-up/
And the 8.11 article for comparison purposes:
http://techgage.com/article/ati_hd_4870_1gb_vs_nvidia_gtx_260216_896mb/
Excluding the dead space results, given the frame rates are more than fine at 4 mega-pixels for either card, its very very close. Bing bang poo I say.