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The GeForce GTX 285 is based upon NVIDIA’s GT200b chip which is a chip manufactured on TSMC’s 55nm process. The chip has 1400 million transistors on a die that is 470mm2. The GTX285 is a die shrunk GTX 280 which is 576mm2 but built on TSMC’s 65nm process. The GTX285 has 240 Stream Processors, which is the same as on the GTX 280. The reference GTX 285 is clocked at 648MH for the core by default, 1476MHz for the Shader clock and 1242MHz for the memory clock. The ASUS MATRIX card, on the other hand has a clock speed of 662MHz for the core, 1476MHz for the shader clock and 1242MHz for the memory. The card is clocked slightly higher than the reference clock for the core. The GeForce GTX285 was designed to play DirectX 10.0 games. Games like Crysis Warhead, Tom Clancy’s HAWX, and many others. With the launch of DirectX 11, just two months away to coincide with the Microsoft Windows 7 launch, a few games are being released to support the intermediate step, Microsoft DirectX 10.1. Only a few OEM cards and laptop chips support this standard from the NVIDIA side of things. ATI of course has a top to bottom lineup that support it, but only a few games are out that support 10.1. One key feature that is exclusive to NVIDIA cards is the ability to support PhysX features in games. PhysX is a proprietary physics engine that is designed to work across many platforms. The PC platform is only supported by NVIDIA cards, as PhysX does not work with ATI cards. PhysX allows effects like destructible environments, realistic cloth, and more. Games like Darkest of Days, Batman Arkham Asylum and Mirror’s Edge use PhysX effects. ASUS specific features include the Super Hybrid Engine, iTracker2 and the Extreme Cooler. The Super Hybrid Engine allows for the optimum performance in games by boosting the GPU clock by up to 14% when under load by reducing 15% power noise. iTracker is the new overclocking utility it allows core, shader clock, memory clock, and voltage modification. There are five user profiles that you can use to set overclock profiles. The cooler has 12% more area on the cooler and 46.5% larger heat pipe coverage than the reference card. The other specific feature is the 5 Level LED Indicator that indicates the load the card is under. Under normal load i.e. surfing the Net or working on a Word program the LED on top of the card is blue. Under Extreme Load, like when running a game or 3DMark Vantage the color of the LED is Red. ASUS Splendid is their color enriching program. ASUS Gamer OSD allows real-time overclocking, benchmarking and video capturing in games. Contents: 
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