40nm Radeon HD 4770, 4750 could arrive on May 4

AMD is cooking up two new mainstream graphics cards with 40nm graphics processors, and it could launch them on May 4. That's the gist of a report by the folks at IT168, who've posted some purported AMD slides depicting and describing an upcoming Radeon HD 4770.

Judging by the slides, this graphics card will have a dual-slot cooler, GDDR5 memory, and a $99 price tag. IT168 also quotes the following specifications: 640 stream processors, a 750MHz core clock speed, a 3200MT/s memory speed, and a 128-bit memory interface. If you're feeling a little déjà vu, it might be because we saw a German e-tail listing for a product with those exact specs last week—except it was referred to as a Radeon HD 4750.

IT168 says a Radeon HD 4750 is also coming, but that it will be a slower derivative with GDDR3 memory instead of GDDR5. If the 4770 does indeed launch at $99, the 4750 could conceivably be 10 or 20 bucks cheaper. The 128-bit memory interface might hurt performance significantly when coupled with slower GDDR3 RAM, though.

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