It seemed like the new Mandrake Linux installation on my game machine was being pokey. (glpsol was taking longer to get started than I think it did on my desktop.) Since the game machine is a dual-core Athlon with a decent built-in SATA controller, I am less than pleased. But, after all, I did get it to play Windows games.
My desktop gets about 44MB/sec from its drive. Same drive model installed in the game machine gets 5MB/sec on a good run. (It doesn't appear to be the disk, the second SATA drive is the same or worse.)