Just tried the latest Alpha4 via USB stick. Worked perfectly first go, with an ASRock AM2+ Mobo, and Phenom II x4 @ 3.6GHz. Speed was staggering, and full-HD video was very watchable with default player (@60% CPU on all cores)
The only thing that didn’t work was my PCIe SATA3 adaptor (connected to SSD).
Please inform me if you know of an ASMedia SATA3 driver appearing for Haiku!