Apr 21, 2011 10:11 GMT  ·  By

After introducing its first graphics cards based on the Turks and Caicos cores into the retail market, AMD seems ready to let loose into the wild another 6000-series OEM cards, the Radeon HD 6770 and HD 6750, which reports suggest are scheduled for an April 28 launch.

Just as their OEM-only counterparts which were announced a while back, the cards are actually just rebranded versions of the company's previous mainstream models, the HD 5770 and HD 5750.

This means that the HD 6770 will feature 800 streaming processors, 40 texturing units, 16 ROP units and a 128-bit memory bus, which is connected to 1GB of GDDR5 memory.

Its smaller brother will feature the same amount of video buffer as well as 16 ROP units and a 128-bit wide memory interface, but packs only 720 stream processors and 36 texturing units.

The clock speeds of the graphics cards are unknown at this time, but the advancements made by TSMC with its 40nm fabrication process could allow AMD to push for higher operating frequencies.

Compared to the previous HD 5700-series cards, the only worthwhile update brought by these two mainstream solutions is the addition of an HDMI 1.4a output that enables AMD HD3D support.

The company didn't make any official announcement regarding these cards, but Expreview states they should arrive on April 28.

If the report turns out to be indeed true, it will be quite interesting to see how AMD positions these in its lineup, as the Radeon HD 5770 can now be purchased for as low as $94.99.

This makes it a more than a worthy competitor for the recently launched Radeon HD 6670, that has an MSRP of $99 and can't match the HD 5770 in terms of raw speed.