Our colleagues from a Polish web site have posted a review of the HIS HD 2900 PRO card with 512MB of GDDR3 memory. The review confirms the 512-bit memory interface and they even managed to overclock it above HD 2900XT clocks.
The card comes clocked at 600MHz for the GPU and 800MHz for 512MB of GDDR3 memory. They compared the card against Radeon HD 2900XT, Geforce 8800 GTS 640 MB and 320MB and Geforce 8600GTS. They even managed to overclock it to 750MHz for the core and 900MHz for the memory.
You can check out the results at Pclab.pl. This card currently retails for €239 at Alternate.de and we can tell that it looks like a solid card to us and that it performs great for the money. In 3Dmark06 it' evens faster than the 8800 GTS, but not in games, just as we expected.