My system consists of a P5Q motherboard, with 3 harddrives:
1: WD 80GB IDE (slave, primary)
2: WD 640GB Black SATAII (boot, primary, active)
3: WD 640GB Black SATAII (primary)
When I run HDTune, both the SATA drives show read speeds of 116MB/s. But the IDE drive shows read speads of 14MB/s?
As a test, it takes 10 seconds to move 1GB from 1 stata drive to the other, but it takes 1 minute to move 1GB from a sata to the ide drive. Oh, and in return it takes again only 10 seconds to move 1GB from the ide drive to a sata drive.
Please tell me that's impossible and something is not setup right
There's two kinds - the old, standard 40 pin with a 40 wire ribbon cable and a newer kind with 80 wires. The extra go between the others to act as a shield. Newer (the last few years) motherboards can detect the difference and will automatically assign a higher DMA protocol.
If you have an older IDE cable, replace it with a newer one. It may help. Otherwise, either live with the lack of speed, or replace the drive - about your only two choices.