ok thanks its just before I upgraded I didn't have this problem so I thought
it may of been a compatibility issue with winxp 32bit and the 64bit
processor
It's quite likely that the RAID controller and/or associated driver have
problems. Is that new to this hardware configuration? Or, perhaps the
motherboard has PCI bus performance problems. I have seen a number of
new chipset/motherboard implementations in the last year which have
severe PCI performance issues, sometimes only in one, or some of the
slots. Try moving the controller between slots. Also, if it is a 64-bit
card, make sure it isn't in a slot adjacent to a 32-bit card. In most
configs, slots 1-2 are together, 3-4 together, etc. So, mixing older
slower 33Mhz, 66Mhz, 100Mhz, or 32-bit/64-bit cards together in those
pairs will result in both cards running at the slower and/or narrower
of the two. Good BIOS implementations will actually tell you to move
your cards if you do this, but most will not.