How potent? It's fully a match for the Nvidia GTX Titan and Nvidia GeForce GTX 780, the two cards that have dominated the top end of the market on Nvidia's side of the business for most of this year. This slight pullback on clock speeds doesn't change the fact that the card's specs are extremely potent. Clock speeds are down slightly from the AMD Radeon HD 7970 GHz Edition ,to 1GHz rather than 1.05GHz. At 4GB of RAM, the R9 290X isn't the heaviest hitter on the block-that distinction still goes to the Nvidia GeForce GTX Titan -but its 4GB of RAM puts it neatly in second place. The memory interface, too, gets an increase, from 384-bit all the way to 512-bit, and a subsequent increase in memory bandwidth to 320GBps. The ROP increase is particularly interesting, because it represents a ratio shift-this new card is putting more power into the total number of pixels it can output per second, likely in a bid to improve 4K performance. AMD has also doubled the number of primitives the chip can process per clock (up to four, from two), 176 texture units (up from 128), and 64 render outputs (ROPs), up from 32. The R9 290X contains 2,816 cores-a 37.5 percent increase-but that's not all. AMD's previous highest-end GPU, the AMD Radeon HD 7970 contains 2,048 cores, a 384-bit memory bus, and 3GB of RAM. The R9 290X is based on the same Graphics Core Next (GCN) architecture that AMD debuted nearly two years ago, but with considerably more GPU cores baked in. There's a potential trade-off in the noise department, but the R9 290X is absolutely capable of driving high-end 4K gaming. It's the highest-performing GPU the company has ever launched and very nearly as fast at the Nvidia GeForce GTX 780 Ti –for markedly less money. The AMD Radeon R9 290X ($549 list) graphics card is the company's answer to Nvidia's near-total domination of the high-end GPU market.
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