ASRock K8 Combo-Z/ASR Motherboard Review
 

What was needed was a motherboard solution that provided a bridge between the affordable Socket 754 Athlon64 chips and the future of the Athlon 64, Socket 939. ASRock has provided us with just such a solution, and we're going to see how the K8 Combo-Z/ASR handles it task. This could be the perfect board for those of you who want to go Athlon64 on the cheap, but don't want to be stuck without an upgrade path to newer socket 939 processors. Based on the ALi M1689 chipset which we'll cover in more detail later in the review, the K8 Combo-Z/ASR can be used with both Socket 754 and Socket 939 Athlon processors! Although not at the same time.

http://www.pcstats.com/articleview.cfm?articleID=1699