PowerColor Radeon HD 5870 and 5850 PCS+

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Test System and Unigine Heaven

How We Configured Our Test Systems:  We tested the graphics cards in this article on a Gigabyte GA-EX58-UD5 motherboard powered by a Core i7 965 quad-core processor and 6GB of OCZ DDR3-1333 RAM. The first thing we did when configuring the test system was enter the system BIOS and set all values to their "optimized" or "high performance" default settings. Then we manually configured the memory timings and disabled any integrated peripherals that wouldn't be put to use. The hard drive was then formatted, and Windows 7 Ultimate x64 was installed. When the installation was complete we fully updated the OS and installed the latest hotfixes, along with the necessary drivers and applications.

HotHardware's Test Systems
Core i7 Powered

Hardware Used:
Core i7 965 (3.2GHz)

Gigabyte EX58-UD5
(X58 Express)

PowerColor Radeon HD 5800 PCS+
Radeon HD 5850
Radeon HD 5870
Radeon HD 5870 OC

GeForce GTX 285
GeForce GTX 480

6GB OCZ DDR3-1333
Western Digital Raptor 150GB
Integrated Audio
Integrated Network

Relevant Software:
Windows 7 Ultimate x64
DirectX Feb. 2010 Redist
ATI Catalyst v10.3a
NVIDIA GeForce Drivers v197.13 / 197.17

Benchmarks Used:

Unigine Heaven v2.0
3DMark Vantage v1.0.1
FarCry 2
Left 4 Dead 2*
Enemy Territory: Quake Wars v1.5*

* - Custom benchmark

Unigine Heaven v2.0 Benchmark
Synthetic DirectX 11 Gaming

Unigine Heaven

The Unigine Heaven Benchmark v2.0 is built around the Unigine game engine. Unigine is a cross-platform real-time 3D engine, with support for DirectX 9, DirectX 10, DirectX 11 and OpenGL. The Heaven benchmark--when run in DX11 mode--also makes comprehensive use of tessellation technology and advanced SSAO (screen-space ambient occlusion), and it also features volumetric cumulonimbus clouds generated by a physically accurate algorithm and a dynamic sky with light scattering. Due to the fact that we tested Heaven in DX11 mode, no NVIDIA GT200 series cards are represented in the graph below.

The increased core and memory clock frequencies of the PowerColor Radeon HD 5870 and 5850 PCS+ give them a slight edge over the stock cards in the Unigine benchmark. The 5850 PCS+'s delta is more pronounced than the 5870's, but ultimately both were faster.

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