I have 2 Windows XP Pro desktop PCs, both employing genuine Intel P4-based (3GHz) CPUs, both with multiple data drives, both having SATA-connected Western Digital Raptor WDC WD360GD-00FNA0 hard-drives as their Windows system drive.
Unfortunately, SiSoft Sandra and Lavlys Everest reveal the following:
Max. UDMA Transfer Mode: UDMA 6 (ATA-133)
Active UDMA Transfer Mode: UDMA 5 (ATA-100)
for both Raptors.
The Northbridge controller chipset on the Asus P5GV-MX is the following:
Intel Grantsdale-G i915GV
whereas on the Asus P4C800-E Deluxe, it is:
Intel Canterwood i875P.
[As a footnote: This MoBo also has a Promise 20378 RAID controller which can be pressed into service as a non-RAID hard-drive controller.]
On the Asus P4C800-E Deluxe, one drive (a Maxtor DiamondMax10 6B200P0) IS operating with a Max. UDMA Transfer Mode of UDMA 6 (ATA-133); however, on the P5GV-MX, none of the other 4 drives is operating at UDMA 6.
I would like to 'turn on' the UDMA 6 mode for BOTH the Raptor drives (especially the one in my Cubase SX DAW which has to be able to stream incredibly high volumes of audio data to-and-from its drives) ... but can find no way to do this.
I have checked the BIOS (but even on the PC which has UDMA 6 operating, it only shows UDMA 5 at boot time), as well as the Advanced Settings in the various IDE Channel entries under IDE ATA/ATAPI controllers in the Device Manager, but this only shows "PIO" or "DMA if available". I've even examined a few utilities but to no avail.
I've also considered upgrading the drivers ... but could not find anything suitable / relevant.
Any ideas gratefully accepted!