I have a caviar black 500gb drive (and 2 other drives 1 TB, 250gb hooked to a serial ATA mb):
and I have been having general windows problems. Moreover the Windows 7 performance rating of my drive is 5.9 (the lowest of any of my hardware).
When I run passmark disk check:
It says I am running about a 4.1 MB/sec read time
When try Vopt it says 63MB/sec, when I try HD tune pro I get 85 Mb/sec.
These two last ones seem like decent numbers, but I can't tell if my hard drive is running slower than it should or not.
I have tried:
* made sure DMA is enabled
* removed controllers from device manager and rebooted
* updated bios
* installed new chipset drivers
* checked for fragmentation
* ran factory diagnostics on the drive (everything seemed ok).
I'm not sure if the drive is abnormally slow or not. I think it is swapping more than previously (memory is filling up) and I'll probably wipe my drive and add 2gb of ram but I'm just worried that the problem will return so I want to find out more about it.