The RV770PRO is a GDDR3 version of the RV770 chip and we’ve found out that the samples out in the wild are working at 625MHz. The samples are based on revision a12, which is usually ATI’s production revision.

The sample board was equipped with GDDR3 memory clocked at 2,000MHz and we’ve heard that GDDR5 samples are expected any day now.

Both RV770XT and RV770PRO are scheduled for a June 16^th launch, just two days before the Geforce GTX 280 / 260 launch.