ASUS never made a K8N back when Athlon 64 was introduced on Socket 754. K8 obviously denotes AMD's K8 CPU architecture, the definition behind the Opteron and Athlon 64 implementation. N would have denoted the use of NVIDIA's supporting chipset, which was nForce3 150 at the time. So while ASUS created the K8V (VIA chipset, Socket 754 for Athlon 64) and SK8V (VIA chipset, Socket 940 for Athlon FX and Opteron), along with an SK8N (Socket 940, nForce3 150), there was no K8N.



Link: Hexus