Running HD4870 with Cat 8.11 under Vista x64. I'm seeing up to 10% increase to PPD on the larger WU and much lower CPU usage which frees cycles for SMP. Overall a nice net increase. ymmv
This is an open beta to test the new CAL DLLs and newer 4000 series cards (older cards, i.e. 36** card or below should not use this client). If this open beta looks good, we'll put it on the dowload page. Given the strong performance in closed beta testing, this move will likely come soon, unless somehow some new showstoppers come up.
The client supplied should work with all CAL capable ATI cards, please report if you find that a card isn't recognised (the client should accept any HD 4**0 card in addition to those previously supported). It will also work with NVIDIA cards, but the client is functionally identical to the current released version.
This client has a version number of 6.20r2beta and expires on 2nd March 2009 (it shouldn't stay in beta for this long however, as we are keen to get the updated CAL DLLs out to the masses sooner rather than later).