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Review: Sapphire Radeon HD 4770 512MB in CrossFireX: beating up on high-end GPUs?

by Tarinder Sandhu on 5 May 2009, 10:08 3.85

Tags: Radeon HD 4770 in CrossFire, AMD (NYSE:AMD), Sapphire, ATi Technologies (NYSE:AMD)

Quick Link: HEXUS.net/qar3j

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Far Cry 2

Far Cry 2 1,680x1,050 4xAA MaxAF
XFX HD 4890 OC 1,024MBBFG GTX 260 896MB BFG GTX 275 OC 896MBNVIDIA GTX 275 896MBSapphire HD 4770 XF 1,024MBSapphire HD 4890 OC+ 1,024MBSapphire HD 4870 1,024MB
64.1854.4864.6663.4175.1264.6655.42


Far Cry 2 1,920x1,200 4xAA MaxAF
XFX HD 4890 OC 1,024MBBFG GTX 260 896MB BFG GTX 275 OC 896MBNVIDIA GTX 275 896MBSapphire HD 4770 XF 1,024MBSapphire HD 4890 OC+ 1,024MBSapphire HD 4870 1,024MB
58.147.8957.3456.3862.8458.650.06


Far Cry 2 2,560x1,600 4xAA MaxAF
XFX HD 4890 OC 1,024MBBFG GTX 260 896MB BFG GTX 275 OC 896MBNVIDIA GTX 275 896MBSapphire HD 4770 XF 1,024MBSapphire HD 4890 OC+ 1,024MBSapphire HD 4870 1,024MB
38.6833.8741.3340.7111.7939.0433.28


Performance at 1,680x1,050 and 1,920x1,200 is just where we would expect it to be. However, the 2,560x1,600 result exemplifies the potential 'problem' that the cards face when overloaded with data. We reckon that it's more of a driver issue than anything else, because a 512MB-equipped Radeon HD 4870 does a lot better here. The foibles of multi-GPU usage, eh?