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Written by Olin Coles   
Friday, 03 April 2009
Table of Contents: Page Index
Sapphire Radeon HD 4890 RV790 Video Card
Radeon HD 4890 Features
RV790 GPU Specifications
Radeon 4890 Closer Look
Video Card Testing Methodology
3DMark06 Benchmarks
COD 4 Fraps Benchmarks
Crysis Benchmark Results
Devil May Cry 4 Benchmark
Far Cry 2 Benchmark
World in Conflict Benchmarks
Radeon HD 4890 Temperatures
VGA Power Consumption
Radeon 4800-Series Final Thoughts
Radeon HD 4890 Conclusion

VGA Testing Methodology

At the start of all tests, the previous display adapter driver is uninstalled and trace components are removed using Driver Cleaner Pro. We then restart the computer system to establish our display settings and define the monitor. Once the hardware is prepared, we begin our testing. The synthetic benchmark tests in 3DMark06 will utilize shader models 2.0 and 3.0, while the video games will use their own proprietary game engine. For lower-end VGA products we test at 1024x768 (15-17" standard LCD), 1280x1024 (17-19" standard LCD), and 1680x1050 (22-24" widescreen LCD). In our higher-end VGA product tests we conduct add the 1920x1200 (24-28" widescreen LCD) resolution. In some tests we utilized widescreen monitor resolutions, since more users are beginning to feature these products for their own computing.Radeon_HD4890_GPU-Z.png

Each benchmark test program begins after a system restart, and the very first result for every test will be ignored since it often only caches the test. This process proved extremely important in the World in Conflict and Supreme Commander benchmarks, as the first run served to cache maps allowing subsequent tests to perform much better than the first. Each test is completed five times, with the average results displayed in our article.

Our site polls and statistics indicate that the vast majority of visitors use their PC for playing video games, and practically every one of you are using a screen resolutions mentioned above. Since all of the benchmarks we use for testing represent different game engine technology and graphic rendering processes, I feel that this battery of tests will provide a diverse range of results for you to gauge performance on your own computer system. Since most gamers and enthusiasts are still using Windows XP, it was decided that DirectX 9 would be used for all tests until Microsoft offers Windows 7 to replace the Vista.

Test System

Benchmark Applications

  • 3DMark06 v1.1.0 (8x Anti Aliasing & 16x Anisotropic Filtering)
  • Call of Duty 4: Modern Warfare v1.7.568 (4x AA/16x Trilinear AF using FRAPS)
  • Crysis v1.21 Benchmark (High Settings, 0x and 4x Anti-Aliasing)
  • Devil May Cry 4 Benchmark Demo (Ultra Quality, 8x MSAA)
  • Far Cry 2 v1.02 (Very High Performance, Ultra-High Quality, 8x AA)
  • World in Conflict v1.0.0.9 Performance Test (Very High Setting: 4x AA/4x AF)

Video Card Test Products

Product Series NVIDIA GeForce 8800 GT Reference Design Sapphire Radeon HD 4850 102-B50102-00-AT NVIDIA GeForce GTX 260216 Reference Design Sapphire Radeon HD 4870 102-B50701-10-AT Radeon HD 4890 GDDR5 Video Card ASUS GeForce GTX 285 ENGTX285 TOP Sapphire Radeon HD 4870 X2 Atomic ST-6026 NVIDIA GeForce GTX 295 Reference Design
Stream Processors 112 800 216 800 800 240 1600 480
Core Clock (MHz) 600 625 576 750 850 670 800 576
Shader Clock (MHz) 1457 N/A 1242 N/A N/A 1550 N/A 1242
Memory Clock (MHz) 950 993 999 900 975 1300 1000 999
Memory Amount 512 MB GDDR3 512 MB GDDR3 896 MB GDDR3

512 MB GDDR5

896 MB GDDR3 1024 MB GDDR3 1024MB (x2) GDDR5 1024MB (x2) GDDR3
Memory Interface 256-bit 256-bit 448-bit 256-bit 256-bit 512-bit 256-bit 512-bit

Now we're ready to begin testing video game performance these video cards, so please continue to the next page as we start with the 3DMark06 results.



 

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