![]() ![]() Radeon HD 7770 1GBĪMD is keen to encourage potential purchasers to evaluate the GPUs with future titles in mind, where heavy tessellation comes to the fore, and we see the 1GHz-clocked HD 7770 punching above its weight in titles such as Batman: Arkham City and Crysis 2. ![]() So it comes as a surprise to see that AMD's cut the architecture down to the bone - a maximum of 640 compute processors, 128-bit memory bus, for starters - and has relied on the presumed benefits of GCN to maintain credible performance. Sound in every respect, especially when considering power-draw, one would assume any mid-range GPU based on GCN to be a sure-fire winner, for there's excellent tessellation performance, high-efficiency throughput and a multimedia feature-set that is absolutely cutting edge.īoard partners are positioning these GPUs to fill the all-important $100-$200 (£75-£150) segment that's currently occupied by decent cards based on last-generation technology. The Radeon HD 7770 and HD 7750 GPUs mark AMD's foray into mainstream graphics cards with the new Graphics Core Next (GCN) architecture.
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