Tons of shader power; the fastest single-GPU Radeon you can buy; overclocking headroom.
Noisier than a 4870; marginal upgrade from other RV770 GPU boards.
It’s no secret that ATI’s RV770 GPU, which first appeared in the Radeon 4870 and 4850 last year, is a performance beast. The spring refresh of the GPU, which offers increased core and memory clocks, along with a slight redesign of the GPU, tells an interesting story to anyone who isn’t yet running a second-gen DirectX 10 card (GeForce 2xx series or Radeon 48xx series). However, if you’ve already upgraded, there’s not much to get excited about here.
The Radeon 4890 is built on a 55nm process, just like the 4870 and 4850, but the company made significant tweaks to the architecture to accommodate higher clock speeds, which is evidenced by the fact that Diamond overclocks this board from 850MHz to 925MHz out of the box. Diamond also overclocks the card’s 1GB of memory 100MHz faster than the default, to 1,050MHz. The Radeon 4890 sports quad-pumped GDDR5 memory running on a 256-bit bus. The real stars of the Radeon 4890’s show are its pixel shaders, though, with 800 shader units running at the GPU’s core clock speed. The massive number of shader units gives the 4890 a significant advantage over comparable Nvidia cards in shader-limited benchmarks like Crysis.
|Diamond 4890 HD XOC ||GeForce GTX 285 |
|Driver Version ||Catalyst 9.4 ||182.08|
|Crysis 4x AA / Very High ||22.2 ||20.32|
|Crysis noAA / Very High||25.97||24.76|
|Call of Duty ||63.57 ||74.6|
|Vantage Game 1 ||16.4||19.45|
|Vantage Game 2 ||12.4||14.26|
|Far Cry 1920x1200 (High Quality, No Physics, No AI)||51.8||57.91|
|Far Cry 1680x1050 (High Quality, No Physics, No AI)||56||65.11|
Best scores are bolded. Benchmarks are run on an Intel Core 2 Quad Q9770 Extreme, with 4GB of memory running Windows Vista. Crysis, and 3DMark Vantage are run at 1920x1200, with 4x AA and 8x anisotropic filtering, unless otherwise noted. Call of Duty is run at 2560x1600 with 4x AA.