We upgraded Quake 4 to version 1.4.2 and ran its multiplayer demo id_perftest with SMP option enabled (which allows Quake 4 to recognize and use more than one CPU), under the same three 16:10 widescreen resolutions, 1680x1050, 1920x1200, and 2560x1600, first with image quality settings configured at “low” and then with image quality settings configured at “ultra.” You can check the results below, given in frames per second.

Quake 4 - 1680x1050 - Low	Score	Difference
Sapphire Atomic Radeon HD 3870 X2	285.30	18.42%
Sapphire Radeon HD 4870	278.46	15.58%
GeForce GTX 280	268.80	11.57%
Sapphire Radeon HD 4850	241.38	0.19%
XFX GeForce GTX 260 640M XXX (OC)	240.92
GeForce GTX 260	234.45	2.76%
Radeon HD 3870	227.75	5.78%
GeForce 9800 GTX	225.52	6.83%
GeForce 9800 GX2	220.48	9.27%

Quake 4 - 1920x1200 - Low	Score	Difference
Sapphire Atomic Radeon HD 3870 X2	266.23	12.06%
Sapphire Radeon HD 4870	248.13	4.45%
XFX GeForce GTX 260 640M XXX (OC)	237.57
GeForce GTX 280	235.92	0.70%
GeForce GTX 260	220.96	7.52%
Sapphire Radeon HD 4850	207.58	14.45%
Radeon HD 3870	188.40	26.10%
GeForce 9800 GX2	174.06	36.49%
GeForce 9800 GTX	158.87	49.54%

Quake 4 - 2560x1600 - Low	Score	Difference
Sapphire Atomic Radeon HD 3870 X2	197.82	15.69%
XFX GeForce GTX 260 640M XXX (OC)	170.99
GeForce GTX 280	168.81	1.29%
Sapphire Radeon HD 4870	158.99	7.55%
GeForce GTX 260	149.28	14.54%
Sapphire Radeon HD 4850	128.00	33.59%
Radeon HD 3870	116.01	47.39%
GeForce 9800 GTX	114.34	49.55%
GeForce 9800 GX2	100.07	70.87%

Quake 4 - 1680x1050 - High	Score	Difference
GeForce GTX 280	246.39	1.22%
XFX GeForce GTX 260 640M XXX (OC)	243.41
Sapphire Radeon HD 4870	242.32	0.45%
Sapphire Radeon HD 4850	241.91	0.62%
Sapphire Atomic Radeon HD 3870 X2	237.98	2.28%
GeForce GTX 260	222.32	9.49%
GeForce 9800 GX2	218.80	11.25%
GeForce 9800 GTX	194.65	25.05%
Radeon HD 3870	167.26	45.53%

Quake 4 - 1920x1200 - High	Score	Difference
GeForce GTX 280	224.44	0.97%
XFX GeForce GTX 260 640M XXX (OC)	222.28
Sapphire Atomic Radeon HD 3870 X2	218.62	1.67%
Sapphire Radeon HD 4870	214.74	3.51%
Sapphire Radeon HD 4850	207.57	7.09%
GeForce GTX 260	200.28	10.98%
GeForce 9800 GX2	158.35	40.37%
GeForce 9800 GTX	158.18	40.52%
Radeon HD 3870	144.80	53.51%

Quake 4 - 2560x1600 - High	Score	Difference
Sapphire Atomic Radeon HD 3870 X2	177.36	17.89%
GeForce GTX 280	168.43	11.95%
XFX GeForce GTX 260 640M XXX (OC)	150.45
GeForce GTX 260	149.80	0.43%
Sapphire Radeon HD 4870	140.38	7.17%
Sapphire Radeon HD 4850	127.88	17.65%
GeForce 9800 GTX	102.04	47.44%
GeForce 9800 GX2	94.68	58.90%
Radeon HD 3870	94.40	59.38%