X2: The Threat	Source: Egosoft

A completely rewritten 3D engine based on DirectX8 encompasses many visual effects such as volumetric Nebulae (gas clouds) that have a real impact in the game (you can hide in them) and many new engine, shield, weapon and explosion effects. Objects cast real dynamic 3D shadows! Dynamic DP3 bump mapping allows a previously unseen level of detail.

X2 The Threat
1024x768	FPS	Ranking
MSI RX800XT-VTD256E	178.893
Gigabyte GV-RX80L256V	146.784
PowerColor X700 Pro	128.952
PowerColor Bravo X700	98.304
MSI NX6800GT-T2D256E	149.745
Albatron Trinity PC6600	99.768
Albatron Trinity PC6600U	126.467
Asus Extreme N6600TOP/TD/128M/A	122.753
MSI NX6600GT-TD128 AGP	140.952
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	150.862
Gigabyte GV-3D1 (SLI Mode 500/1120)	0
MSI NX6600GT-TD128E (Single)	147.94
MSI NX6600GT-TD128E (SLI Mode)	144.198
ATi Radeon X800 XL	146.816
ATi Radeon X800 XL (441/1113)	151.725
1600x1200	FPS	Ranking
MSI RX800XT-VTD256E	131.653
Gigabyte GV-RX80L256V	109.583
PowerColor X700 Pro	72.919
PowerColor Bravo X700	53.561
MSI NX6800GT-T2D256E	112.257
Albatron Trinity PC6600	52.586
Albatron Trinity PC6600U	72.223
Asus Extreme N6600TOP/TD/128M/A	77.069
MSI NX6600GT-TD128 AGP	86.314
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	95.189
Gigabyte GV-3D1 (SLI Mode 500/1120)	123.842
MSI NX6600GT-TD128E (Single)	92.239
MSI NX6600GT-TD128E (SLI Mode)	121.336
ATi Radeon X800 XL	109.067
ATi Radeon X800 XL (441/1113)	115.394

Even when overclocked the ATi X800 XL can't quite reach as high as the X800 XT in X2, but it does manage to best the 6800GT card. The various SLI solutions are slightly superior too.