According to our info, ATI should have two cards based on its 40nm RV740 GPU, one with GDDR3 memory and one with GDDR5 memory.

The clocks aren´t offical yet, but if that preview from Guru3D is correct it should work at somewhere between 650 and 700MHz. The GDDR5 version should be called the HD 4770 and the GDDR3 might end up called HD 4750, but names might easily change as boxes didn´t go into print yet.

The GDDR3 version will of course be a bit cheaper and slower, due to the 128-bit memory bus, but it should be a great mid-range card.

As reported earlier, the new RV740 should appear sometime in April.