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Sapphire Radeon HD 4870 X2 Video Card 100251SR E-mail
Reviews - Featured Reviews: Video Cards
Written by Olin Coles   
Monday, 18 August 2008
Table of Contents: Page Index
Sapphire Radeon HD 4870 X2 Video Card 100251SR
Radeon HD 4870 X2 Features
Sapphire 100251SR Specifications
Closer Look: Sapphire 4870
Video Card Testing Methodology
3DMark06 Test Results
COD 4 Fraps Benchmarks
Crysis Benchmark Results
Unreal Tournament 3
World in Conflict Benchmarks
Power Consumption and Heat Output
Radeon 4800-Series Final Thoughts
Radeon 4870 X2 Conclusion

3DMark06 Test Results

3DMark is a computer benchmark by Futuremark (formerly named Mad Onion) to determine the DirectX 9 performance of 3D game performance with graphics cards. 3DMark06 uses advanced real-time 3D game workloads to measure PC performance using a suite of DirectX 9 3D graphics tests, CPU tests, and 3D feature tests.

3DMark06 tests include all new HDR/SM3.0 graphics tests, SM2.0 graphics tests, AI and physics driven single and multiple cores or processor CPU tests and a collection of comprehensive feature tests to reliably measure next generation gaming performance today. Some enthusiasts may note that Benchmark Reviews does not include CPU-bound tests in our benchmark battery, and that only graphic-bound tests are included.

Here at Benchmark Reviews, we believe that synthetic benchmark tools are just as valuable as video games, but only so long as you're comparing apples to apples. Since the same test is applied in the same controlled method with each test run, I believe 3DMark is a very reliable tool for comparing graphic cards against one-another.

More visitors to Benchmark Reviews operate at 1280x1024 resolution than any other, as it represents the native resolution of 19" LCD monitors. Using this resolution as a starting point, the maximum settings were applied to 3dMark06 which for these tests include 8x Anti-Aliasing and 16x Anisotropic Filtering. Low-resolution testing allows the graphics processor to plateau maximum output performance, which thereby shifts demand onto the system components to keep up. At the lower resolutions 3DMark will reflect the GPU's top-end speed in the composite score, indicating full-throttle performance with little load. This makes for a less GPU-dependant test environment, and is helpful in measuring the maximum output performance in the test results.


Right away our test results indicate that 3dMark06 benchmarks really prefer the CrossFireX pair of Sapphire Radeon HD 4850 video cards. But because of the added overhead of combined graphics processors and video frame buffer memory, the light load created by the shader model 2.0 tests have a relatively negative impact on the CrossFireX score. Another way of describing this phenomenon is comparing the combined Radeon HD 4850 video cards to a race car that has only high gears available in the transmission: it will have a faster top-end speed, but it will take longer to get there. The ZOTAC GeForce GTX 280 AMP! Edition video card is appears to also be another high-gear example, as gets nudged-out by the GeForce 9800 GX2 for SM 2.0 tests but outperforms the GX2 in the more complex HDR/SMR 2.0 tests.

In the SM 2.0 tests the Sapphire Radeon HD 4870 X2 keeps just ahead of the Radeon HD 4850 CrossFireX set by a mere 14%, and ahead of the dual-GPU Gigabyte GeForce 9800 GX2 by an astounding 27%. The overclocked GeForce GTX 280 AMP! Edition video card trails behind 28%. However, moving into the more advanced HDR tests the Radeon HD 4870 X2 produces a much more definitive lead over the entire test group, as it can only be matched with a set of Radeon HD 4850's.


At the widescreen resolution of 1680x1050, the scores are practically identical in terms of ratio to all of our previous tests. Once again the shader model 2.0 tests put the Sapphire Radeon 4870 X2 slightly ahead of the CrossFire set of HD 4850's, while the rest of the graphic cards fall in at different level of lesser performance. This is the case until they reach the shader model 3.0 tests, where everything seems to go flat across the board. Twin Sapphire Radeon HD 4850 video cards in a CrossFireX set are still running circles around the competition in every 3dMark06 benchmark we run, and makes the argument for inexpensive multi-card performance. The Sapphire Radeon HD 4870 X2 surpasses CrossFireX set of Radeon 4850's by only 5% while beating the overclocked ZOTAC GeForce GTX 280 AMP! Edition by a hefty 54%!


Finishing up the series of synthetic benchmark tests under heavy load, the Gigabyte GeForce 9800 GX2 video card roughly matches the AMP!'ed GTX 280 SM 2 tests, yet the CrossFireX set of Radeon HD 4850's and Sapphire Radeon HD 4870 X2 dominate over the entire field in the more demanding shader model 3.0 tests.

Two things were made very clear with the 3dMark06 benchmark tests: NVIDIA isn't winning the fight, and the Sapphire Radeon HD 4870 X2 is so far ahead of any other video card that it redefines the high-end of graphics performance.

Product Series Sapphire Radeon HD 4870 102-B50701-10-AT XFX GeForce GTX 260 GX-260N-ADDU

Gigabyte GeForce 9800 GX2 GV-NX98X1GHI-B

Sapphire Radeon HD 4850 102-B50102-00-AT x2 (CrossFireX) ZOTAC GeForce GTX 280 AMP! Edition ZT-X28E3LA-FCP Sapphire Radeon HD 4870 X2 100251SR
Stream Processors 800 192 128 (x2) 800 240 1600
Core Clock (MHz) 750 640 600 625 700 750
Shader Clock (MHz) N/A 1242 1500 N/A 1400 N/A
Memory Clock (MHz) 900 1150 1000 900 1150 900
Memory Amount

512 MB GDDR5

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

Take the 3DMark06 tests at face value, because in our next section we begin real-world testing on a cadre of popular video games known for taxing the graphics processor, and the performance curve is expected change. Our first up is Call of Duty 4, so please continue on...


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