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• This is AMD’s fastest single-chip card with plenty of graphics processing muscle in reserve, which only come to light with a more powerful CPU. The following tables allow you to see how much performance the HD 4870 is able to bring to the screen with the additional processor frequency. The driver versions and overclocked CPUs are listed directly after the chip name. The resolutions go from 1280x1024 to 1680x1050 to 1920x1200 pixels, first without anti-aliasing (0xAA), then in the same order with anti-aliasing (4xAA, and in Mass Effect 8xAA as well). The two upper lines of figures represent the frame rates, the lower line is the difference in performance in percentage. Assassins Creed in fps 12800xAA 16800xAA 19200xAA 12804xAA 16804xAA 19204xAA Overall HD 4870 (512 MB) 8.8 57.7 58.4 57.9 44.4 43.5 43.8 305.7 HD 4870 (512 MB) CPU@3.47 66.1 65.9 64.7 50.7 48.6 47.3 343.3 Difference in performance in percentage 14.6 12.8 11.7 14.2 11.7 8.0 12.3 The additional 18.2 percent CPU speed is converted by the graphics card into as much as 14.6 percent higher frame rates. In the 1920 resolution, performance increase stops at 8 percent, although the HD 4870 would seemingly benefit from a clock rate of at least 4 GHz in Assassins Creed. Call of Duty 4 in fps 12800xAA 16800xAA 19200xAA 12804xAA 16804xAA 19204xAA Overall HD 4870 (512 MB) 8.8 182.1 149.5 126.2 137.6 110.7 92.1 798.2 HD 4870 (512 MB) CPU@3.47 180.5 149.1 121.5 139.0 110.4 95.5 796.0 Difference in performance in percentage -0.9 -0.3 -3.7 1.0 -0.3 3.7 -0.3 Like the GeForce GTX 280, the Radeon HD 4870 shows no performance improvement with the additional CPU power in Call of Duty 4. Crysis High in fps 12800xAA 16800xAA 19200xAA 12804xAA 16804xAA 19204xAA Overall HD 4870 (512 MB) 8.8 31.9 29.7 29.5 26.9 24.1 21.1 163.2 HD 4870 (512 MB) CPU@3.47 36.4 33.2 31.2 30.4 24.8 21.2 177.2 Difference in performance in percentage 14.1 11.8 5.8 13.0 2.9 0.5 8.6 Crysis gets a reasonable performance boost. The 18.2 percent jump in clock speed is visible in the 1280 resolution with 13 percent to 14 percent higher frame rates. At 1920 with anti-aliasing enabled, it’s all over—the HD 4870 runs out of steam. At 1680x1050 pixels (4xAA), it offers a minor increase of 3 percent. Crysis Very High in fps 12800xAA 16800xAA 19200xAA 12804xAA 16804xAA 19204xAA Overall HD 4870 (512 MB) 8.8 28.8 22.0 18.1 22.0 15.7 11.4 118.0 HD 4870 (512 MB) CPU@3.47 31.3 21.0 17.6 21.3 15.1 11.5 117.8 Difference in performance in percentage 8.7 -4.5 -2.8 -3.2 -3.8 0.9 -0.2 With Very High image quality, the additional CPU performance only yields results at 1280. In other cases you must expect losses with this test system. ET: Quake Wars in fps 12800xAA 16800xAA 19200xAA 12804xAA 16804xAA 19204xAA Overall HD 4870 (512 MB) 8.7 67.7 65.4 66.2 66.6 64.2 64.2 394.3 HD 4870 (512 MB) CPU@3.47 80.1 80.3 76.8 76.7 75.2 74.3 463.4 Difference in performance in percentage 18.3 22.8 16.0 15.2 17.1 15.7 17.5 The Catalyst 8.8 graphics driver doesn’t even start Quake Wars. Catalyst version 8.7 was used for the test. Results with 18.3 percent and 22.8 percent additional CPU performance would be intriguing, as only 18.2 percent was made available, and the results clearly show that the Radeon HD 4870 has much more potential in Quake Wars if it is combined with a more powerful CPU. Half-Life 2 Episode 2 in fps 12800xAA 16800xAA 19200xAA 12804xAA 16804xAA 19204xAA Overall HD 4870 (512 MB) 8.8 107.2 101.4 100.6 105.8 101.5 100.1 616.6 HD 4870 (512 MB) CPU@3.47 120.2 113.0 112.5 117.6 112.8 109.1 685.2 Difference in performance in percentage 12.1 11.4 11.8 11.2 11.1 9.0 11.1 The results for Half-Life 2 Episode 2 are not surprising as the game is heavily dependent on the CPU. We suspect the HD 4870 could benefit from at least another 500 MHz of CPU clock speed before it reaches its limit. Mass Effect in fps 12800xAA 16800xAA 19200xAA 12804xAA 16804xAA 19204xAA 12808xAA 16808xAA 19208xAA Overall HD 4870 (512 MB) 8.8 95.9 92.2 81.9 63.9 48.4 38.8 62.1 47.1 37.5 567.8 HD 4870 (512 MB) CPU@3.47 104.5 100.1 83.3 64.5 48.8 38.8 62.3 47.1 37.7 587.1 Difference in performance in percentage 9.0 8.6 1.7 0.9 0.8 0.0 0.3 0.0 0.5 3.4 Without anti-aliasing, you can generate a few more frame at 1680x1050 pixels; above this the additional CPU power is ignored as the graphics card has reached its performance limit. MS Flight Simulator X SP2 in fps 12800xAA 16800xAA 19200xAA 12804xAA 16804xAA 19204xAA Overall HD 4870 (512 MB) 8.8 25.2 25.9 25.9 25.9 25.8 25.7 154.4 HD 4870 (512 MB) CPU@3.47 29.3 28.6 28.5 29.7 28.0 28.9 173.0 Difference in performance in percentage 16.3 10.4 10.0 14.7 8.5 12.5 12.0 Flight Simulator X and the Radeon HD 4870 hungrily chew up the CPU overclocking and would happily take more before the graphics card would stop drawing the additional frames on screen. The limit is probably well over the 4 GHz CPU rate. World in Conflict in fps 12800xAA 16800xAA 19200xAA 12804xAA 16804xAA 19204xAA Overall HD 4870 (512 MB) 8.8 48.0 49.9 47.5 43.9 37.0 33.8 260.1 HD 4870 (512 MB) CPU@3.47 52.9 54.1 50.9 44.6 37.6 32.4 272.5 Difference in performance in percentage 10.2 8.4 7.2 1.6 1.6 -4.1 4.8 Without anti-aliasing, the performance increase due to increased CPU clocking is perfectly fine, but with anti-aliasing, the gain is barely visible. The HD 4870 loses some frame rates in the 1920 resolutions, although 1 fps is within the measuring tolerances.

• This DirectX 10 game can be played with the GeForce 9600 GT at 1920x1200 even with anti-aliasing enabled. Assassins’ Creed responds to overclocking of the faster 9600 GT models from MSI, Palit, and Sparkle with an increase in the frame rate of up to 5 fps. Note that the reference model 9600 GT was tested with the graphic drivers ForceWare 175.16 and 177.92; the version number is after the card name. The Radeon HD 4870 was tested with the graphics drivers Catalyst 8.6 and Catalyst 8.8. Again, the version number is put after the card name. No AA 4xAA

• An important factor in the selection of games is to cover a range of 3D graphics engines and a mix of different genres. For example, Assassin’s Creed runs on a very fast and high quality DirectX 10 engine, and more titles will be available with this graphics engine in the future. Call Of Duty is a first-person shooter, which is occasionally improved, and represents an excellent speed test for SLI or CrossFire, while Crysis is the yardstick for evaluating shader and raw graphics performance. For DirectX 10 effects, only the Very High mode is of interest, as it is only at this quality level that the water reflections and HDR rendering of the sun are really visible. The 3D performance of current graphics cards is still not quite good enough for Very High mode combined with high resolutions, anti-aliasing and fluid animations. Enemy Territory Quake Wars runs with the id Engine and under OpenGL, which we have already seen in Prey, Doom, and Quake. Half Life 2: Episode 2 uses the improved Source engine from Valve—the same one used in Counter Strike Source (CSS) and the complete Half Life 2 series. Mass Effect is the most recent game with the UT3 Engine, and this is also used to give a modern 3D look to Rainbow Six Las Vegas 1 and 2, Stranglehold, Bioshock, UT3, Blacksite and Frontlines Fuel of War. Since there will be many other titles using the UT3 engine, Mass Effect and its associated results form one of the most important benchmarks. Flight Simulator 10 from Microsoft (FSX) should be familiar territory for private pilots and fans of flight simulators. And finally, the graphically-intricate World in Conflict is representative of the real time strategy games genre. Test resolutions are 1280x1024 (aspect ratio 4:3), 1680x1050 (16:10) und 1920x1200 pixels (16:10), both without filtering and with AA/AF. Mass Effect was tested with 4xAA and 8xAA, which we forced via the graphics driver. The percentage of DirectX 10 titles has increased somewhat in recent months, and older graphics cards with Shader Model 3.0 are able to switch the games over to DirectX 9 with no trouble at all. Caution! Since older cards switch down into DirectX 9 mode, they may run faster than their DirectX 10 replacements, as the latter must draw more intricate DX 10 effects. Game Mode Default Quality 3D Engine Assassins Creed v1.02 DX10 0AA+0AF AA+AF Scimitar Engine Call of Duty 4 v1.6 DX9 0AA+0AF 4xAA+8xAF Call of Duty Crysis v1.21 High Quality DX9/10 0AA+0AF 4xAA+8xAF Crysis Engine Crysis v1.21 Very High Quality DX10 0AA+0AF 4xAA+8xAF Crysis Engine Enemy Territory: Quake Wars v1.4 OpenGL 0AA+0AF 4xAA+8xAF ID Half Life 2 Episode 2 DX9 0AA+0AF 4xAA+8xAF Source Engine Mass Effect DX10 0AA+0AF 4xAA+AF/8xAA+AF UT3 Engine MS Flight Simulator X SP2 DX10 0AA+0AF AA+AF FSX World in Conflict v1.05 DX10 0AA+0AF 4xAA+4xAF MassTech Assassin’s Creed The Radeon X800 XT only supports Shader Version 2.0 and won’t run this one. Cards using Shader Model 3 switch over to DirectX 9. If anti-aliasing is used, Assassin’s Creed appears to deactivate HDR rendering when using the GeForce 7, as the anti-aliasing is visible and the frame rates increase. The GeForce 7 does not support HDR rendering (Shader 3) with simultaneous anti-aliasing, as we have already seen in Oblivion and 3DMark06. The X1300 and X1300 Pro display the Assassin’s Creed menu correctly, but when playing, the cards generate AA graphics errors. The old GeForce 7 and Radeon X1000 series are only able to run at the 1280x1024 resolution with a refresh rate of 70 or 75 Hz—the 60 Hz setting is not available. Call of Duty 4 Dual-chip cards like the X2 or GX2 run the test scene more slowly than two individual cards in SLI or CrossFire mode. If you focus on less complex sections, the frame rates increase; there is no obvious reason for this dual chip card limitation. The Radeon HD 3850 CrossFire using Catalyst 8.6 occasionally caused the game and the test system to crash. Crysis At least 512 MB of memory and a 256-bit bus are barely sufficient to handle the anti-aliasing and Very High mode quality in Crysis at 1680x1050 pixels. The GeForce 9800 GTX SLI, 9800 GX2, Radeon HD 3850 and HD 3850 CrossFire exhibit visible breaks in performance, while the 1024 MB models of the GeForce 8800 GT and 9600 GT handle the high setting better thanks to their large frame buffers. The GeForce 8800 GTS 320 has the familiar memory problem, and even in the form of a SLI Duo, has trouble running Crysis with anti-aliasing, producing low frame rates. When using the 7950 GX2 and Quad-SLI, 7800 GT SLI, 7800 GTX SLI 7900 GS SLI, 7900 GT SLI, 7950 SLI textures tend to flicker. The GeForce 7800 GTX 512 special model performs worse than a normal 7800 GTX with 256 MB, due to the lack of driver optimizations. All DirectX 9 graphics chips are unable to switch into Very High mode. Enemy Territory: Quake Wars The older AMD cards with DirectX 9 do not support soft particles in Quake Wars; the function is missing completely in the graphics menu, and as a result, these cards achieve higher frame rates. The older GeForce 6 supports soft particles and appears to run slower in a direct comparison. Why the function is missing is unclear, since the GeForce 6 can only handle OpenGL 1.5, whereas the X1000 series from ATI is specified at OpenGL Version 2.0. When using the Radeon HD 3650, HD 2600, X1600 XT and X1600 Pro 3D, objects flicker in CrossFire mode. At lower resolutions without anti-aliasing, the graphics cards reach the CPU limit, where the maximum frame rate fluctuates badly—up to 5 fps is possible as an average result. Half Life 2 Episode 2 The GeForce 6 and 7 require the game to be restarted when switching to anti-aliasing, and when changing the resolution. Without restarting Half Life 2 Episode 2, the time demo only runs at 25% of the actual 3D performance. This problem does not occur with any of the other tested cards. Mass Effect Although the frame rate is over 30 fps and loading textures was taken into account, the test scene is very shaky on many of the individual cards. Mass Effect handles multiple graphics chips very well—3-way SLI runs beautifully using a trio of GeForce 8800 Ultras, with a frame rate just under that achieved with the 8800 Ultra SLI. The quad CrossFire with two HD 3870 X2s also provides good results; the game scales the four GPUs well. In order to get the anti-aliasing to work with the Radeon X1000, HD 2000 or HD 3000 you need to rename MassEffect.exe to Bioshock.exe. This can lead to graphics errors, but the test system and benchmark scene showed no signs of this. The new Radeon HD 4000 doesn’t need to have this trick applied; anti-aliasing is supported with no problems. Starting a saved game with the GeForce 8600 GT SLI or 8600 GTS SLI at 1920x1200 pixels and anti-aliasing is a matter of luck. When it works, you either get just 2 fps or the test computer crashes shortly afterward. All DirectX 9 cards switch the UT3 Engine of DirectX 10 (DX10) down to DirectX 9 (DX9). When using the Radeon X800 XT (Shader 2.0), Mass Effect does not start. Microsoft Flight Simulator X SP2 With FSX SP2 it was possible to achieve up to 70 fps with Nvidia card in DirectX 10 mode, but once Vista was supplied with Service Pack 1 (SP1), all frame rates dropped to the old levels of between 15 and 30 fps. The memory problems of the GeForce 8800 GTS 320 surface again—this results in 3 fps at 1920x1200 pixels with anti-aliasing. Three-way SLI with GeForce 8800 Ultra doesn’t like when the desktop is set to 1680x1050 or 1920x1200 pixels and the same resolution as the game. The Radeon X1800 to X1900, X1650 XT and X800 do not support anti-aliasing at 1680x1050 and 1920x1200 during the game—4xAA must be activated via the graphics driver. This also affects the Radeon X1650 Pro, X1600 XT, X1300 XT and X1300 Pro in the 1920x1200 pixel resolution setting. Anti-aliasing is not started in the game, and 4xAA must be forced via the graphics driver. With the DirectX 9 cards, the DirectX 10 preview is not available, and as a result, older cards have a speed advantage over their DX10 successors. World in Conflict CrossFire with three and four graphics chips at the 1920x1200 resolution show a visible increase in frame rates, but the GeForce 6800 GT and 6800 Ultra run very irregularly and poorly. The Radeon X1900 series and the X1950 XTX often have problems when switching to 1680x1050 pixels. The screen turns black and you need to find the resolution change confirmation message and click it. All DirectX 9 graphics cards switch the game from DirectX 10 to DirectX 9, which can lead to increased frame rates with older graphics chips. 3DMark06 The synthetic DirectX 9 benchmark is ideal for testing the optimizations of the graphics card or multi-core CPU. The default test resolution is 1280x1024 pixels with default quality settings and no filters. The CPU score with the Intel X38 chipset lies between 2521 and 2555. With the nForce 780i chipset, 3DMark06 achieved a CPU score of between 2372 and 2427.