Review: ASUS P5K64 WS - where 4 x 16 = 20

Gaming performance

Even CrossFire performance, which could have been adversely affected by the PCIe switch, is within 1% of the P5K3 Deluxe in our gaming benchmarks.

Summary

The performance of the P5K64 WS comes in sufficiently close to the P5K3 Deluxe as to make practically no difference. Its worse result - in the HDTach FireWire test - is less than 2% behind the P5K3 Deluxe.