I've got a Dimension 8100. I've now got the full compliment of 4 IDE devices (the original HDD, CDRW, DVD ROM and a new NEC 2510 DVDRW).

I've found the addition of this drive, which I've now set as Master over the DVD reader, has seriously slowed the system down. This is to the extent that when I try to use the new drive with Nero, the system works slowly and then locks.

I've tried the drives on Cable Select which was even worse.

I've tried disabling the CDRW and DVDROM in BIOS and System Properties and this does speed the system up.

Has anyone else had a problem whereby the addition of a fourth IDE device causes major hold ups?

I also have upgraded RAMBUS RAM at 512Mb ECC, so memory shouldn't be a problem, and the processor is 1.3Gig so that shouldn't be a problem either.

Any help would be appreicated.