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Review: AMD Radeon HD 7850 vs 6850 vs 5850 at same clocks

by Tarinder Sandhu on 7 March 2012, 18:14

Tags: AMD (NYSE:AMD), Sapphire

Quick Link: HEXUS.net/qabdnn

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How we test

GPU comparisons

Graphics card GPU clock
(MHz)
Stream
processors
Shader clock
(MHz)
Memory clock
(MHz)
Memory bus
(bits)
Graphics driver
  AMD Radeon HD 7850 (2,048MB) 860 1,024 860 4,800 256 Catalyst 12.1
  AMD Radeon HD 6850 (1,024MB) 860 960 860 4,800 256 Catalyst 12.1
  AMD Radeon HD 5850 (1,024MB) 860 1,440 860 4,800 256 Catalyst 12.1

HEXUS high-end test bench

Processor Intel Core i5-2500K (3.33GHz, 6MB smart cache, quad-core, LGA1155)
Motherboard Intel Desktop Board DP67BG
Memory 8GB Corsair Vengeance (9-9-9-24 @ 1,600MHz)
Power Supply Corsair AX850W
Monitor Dell 30in 3007WFP
Disk drive(s) Crucial RealSSD C300 (256GB)
Chassis Corsair Graphite Series 600T
Operating system Windows 7 Ultimate (64-bit, SP1)

HEXUS high-end benchmark suite

3DMark 11 Performance and Extreme presets
Aliens vs. Predator DX11, 1,920x1,080 and 2,560x1,600 resolutions, 4xAA, 16xAF, very high quality
Battlefield 3 DX11, 1,920x1,080 and 2,560x1,600 resolutions, 4xMSAA, 16xAF, ultra quality
Batman: Arkham City DX11, 1,920x1,080 and 2,560x1,600 resolutions, 8xMSAA, extreme quality
Crysis 2 DX11, 1,920x1,080 and 2,560x1,600 resolutions, 4xAA, ultra quality
Just Cause 2 DX10, 1,920x1,080 and 2,560x1,600 resolutions, 4xAA, 16xAF, very high quality
Total War: Shogun 2 DX11, 1,920x1,080 and 2,560x1,600 resolutions, 4xMSAA, 16xAF, high quality
Power Consumption To emulate real-world usage scenarios, we record mains power draw both when idle and whilst playing Crysis 2
HEXUS bang4buck A custom metric used to evaluate comparative performance with price factored in

Notes

Three cards, identical frequencies, and tested with the same driver on our high-end suite. Head on over to here to see how they stack up against practically all other high-end cards.