Looks like they had a lot of trouble getting it to work in some of their test boards though. I'd be nervous about using an 800Mhz FSB chip with it too. Seem's like most people would be better off just paying $100 for a new motherboard, unless they're really desperate to keep their 845E boards in use.
That is the problem with most powerleap adaptors especially the tualatin ones because their price is often on par with a new board . But in this case the difference is only $20 . As the review said if you can get it from a place with a return policy or Powerleap themselves you can't go wrong . If it works ....... hooray ............ if it doesn't , send it back .
I'm a bit unclear about exactly what this adapter does. It claims to offer hyper-threading in non-hyperthreading boards, but requires the ability to select hyperthreading in your BIOS. If you can turn on hyperthreading in your mobos BIOS already, where's the issue?