Im using a Intel X25-M 80G with the latest firmware. on XP /w using IDE and WIN7 using AHCI I get read speeds up to 250MB/S. But when running it with Server 2008 SP1 or SP2 on AHCI, I get read speeds around 180MB/S. Ive updated drivers for 2008, tested with writecache on/off.
Any input would be appreciated. thanks!