Slow HDD Don't know if theres a problem? any ideas?

[JamesUK]

Hi have got a epox 8rda+ nforce 2 board with a amd 2600+ cpu, have got a
80gb Western digital 8mb cache special edition drive, which acording to a
lot of sites and reviews supposed to be a very fast drive, some saying it
beats sum scsi drives, but on my machine it seems slow, and when i run
sandra to do a benchmark i get some drives beating it and all the scsi
drives listed well beat it, i'm using the ide drivers from the nvidia nforce
2.0 pack, its called the NVIDIA® nForce(TM) IDE Controller in the device
manager, and all my ide devices show as scsi devices, the other driver is
called: NVIDIA NForce MCP2 IDE Controller. in the installation it asks to
install this sw drivers or something and says its faster so i did but
doesn't seem it, when i tried t go back i had a huge problem where i
couldn't get my cd-roms to work any more, but there ok now on this driver
where i see my devices as scsi.
apart from the benchmark results don't seem to be anything like the reviews
sayin it beats scsi drives.

should i be using the older ide drivers not these ones?

thanks