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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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CoH: OF

Company of Heroes: OF (high-end) 1,680x1,050 4xAA 0xAF
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
73.2380.34100.4898.372.2573.361.72


Company of Heroes: OF (high-end) 1,920x1,200 4xAA 0xAF
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
61.9566.8683.582.5367.7263.0552.36


Company of Heroes: OF (high-end) 2,560x1,600 4xAA 0xAF
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
42.3443.6753.3252.2648.1942.1635.18


Things aren't as rosy in Company of Heroes (DX10), however. One problem that comes to light in this test is the limitations of per-card frame-buffer. Run the game with all the eye-candy turned on and 896MB is a minimum requirement, we reckon. The two HD 4770 cards have 512MB each, but doling out the rendering to both of them causes inconsistent results.

The scores aren't bad, of course, easily matching other Radeons', yet the underlying horsepower intimates that the setup can do more.