Storage evaluation
Tested with a 36GB Western Digital Raptor, there's nothing wrong with the 9NPA+ SLI's SATA read and burst speed. There shouldn't be; it uses the same core logic as ABIT's Fat. AN8 SLI.
USB 2.0 performance is also pretty sharp. It's more a case of chipset evaluation here. There's very little room to optimise the chipset further, and by the same token there's little scope for a motherboard manufacturer to release a poor nForce4-based board.