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Sapphire Radeon HD 4870 X2 Video Card 100251SR E-mail
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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

Unreal Tournament 3

Unreal Tournament 3 (UT3) is a first-person shooter and online multiplayer video game by Epic Games and is the next installment of the Unreal series after Unreal Tournament 2004. It is published by Midway Games and was released in North America for Windows on November 19, 2007.

Unreal Tournament 3 is actually the fourth game in the Unreal Tournament series and the eighth Unreal game, but it has been numbered in terms of the engine it runs on. UT3 is subsequently part of the third generation, because it runs on the Unreal Engine 3, and does not reuse any content from previous versions.

Since Unreal Tournament 3 was designed as a DirectX 9 video game with no current support expected for DirectX 10, we use Windows XP Pro (Service Pack 3) for our benchmark testing. After completing tests on a wide range of products with settings at their highest, it appeared that Unreal Tournament 3 really didn't stress the video cards nearly as much as I would have liked.

Beginning at the low resolution of 1280x1024, the benchmark scores are so close (and high) for some products that it might be time to eliminate this game from our testing process. Nevertheless, it looks like the Unreal Engine 3 game engine doesn't care too much for the ATI Radeon HD 4850 or 4870 video cards. The CrossFireX set was just barely able to keep pace with the others that it surpassed in previous tests. With all High Quality settings and tweaks enabled along with 16x anisotropic filtering, Unreal Tournament 3 doesn't add strain to any of the graphics cards tested like Crysis did.

As the resolution was raised, the once level performance between the GTX 260 and GeForce 9800 GX2 is beginning to split apart. The ZOTAC GeForce GTX 280 AMP! Edition loses just a single frame per second (0.6%) between 1280x1024 and 1680x1050, and the Sapphire Radeon 4870 X2 loses only 2 FPS. For now it appears that just about any graphics card can play Unreal Tournament 3 without issue, but quite frankly I don't know anyone who actually plays this game.


When I tested the Honeywell HWLM2216 recently, I noticed how the 1680x1050 widescreen display resolution of this 22" LCD monitor offered very little strain over a 19" standard display LCD monitor. Comparatively, 1680x1050 produces 1.76 MP and 1280x1024 produces 1.31, so there's only a very small difference expected between performance levels. The biggest difference is in the user experience, because the widescreen monitor comes in very handy for watching multimedia video or playing large world-scape video games.

At 1680x1050 resolution, the differences were beginning to show, but only 1920x1200 will be useful for illustrating how each product performs. Producing 2.3 MP with a 1920x1280 resolution on our 26" SOYO DYLM26E6 test monitor, each product is now separated far enough apart to sort out the winners and losers. The Sapphire Radeon HD 4870 still trails way behind the GeForce GTX 260 and 9800 GX2, but put two 4850 together for a CrossFireX set and the Radeon's look more like contenders. The GeForce 9800 GX2 puts both G92 graphics processors to good use and beats the 4870 and both CrossFireX 4850's by 16%, but the overclocked ZOTAC GTX 280 AMP! Edition video card still pulls off a very narrow victory with a 2 FPS advantage. Uncharacteristically, the Sapphire Radeon HD 4870 X2 falls more in-line with the GeForce GTX 260 in UT3, which could raise some interesting questions.

Similar to our low-resolution tests, Unreal Tournament 3 appears to provide a very minimal load on the high-end video cards we're testing. Thankfully there are several new games arriving to market late into 2008, so with some luck this benchmark will only be used for low-end graphics comparison into the future.

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

Our last benchmark of the series is coming next, which puts our collection of video cards against some very demanding graphics with World in Conflict.


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