A couple of months ago this rumor already popped up, AMD would rebrand its Radeon HD 5750 and 5770 cards to Radeon HD 6750 and 6770 and that looks to be true. Word is spreading that AMD has released these cards for the OEM market, they feature a somewhat different cooler shroud and HDMI 1.4a support but other than that they're identical to the Radeon HD 5700 series.

The bassis for this is that the 6770 is based on the 40 nm Juniper silicon, with 800 VLIW5 stream processors, and 1 GB of GDDR5 memory over a 128-bit wide memory interface. The HD 6750 on the other hand has 720 stream processors. There's no information at present on when (or if) AMD plans to release this to the consumer market. Again the products seem to be OEM only.