I have a CD-ROM drive, CD-RW drive and 2 - 6 G hard drives and have never had a power problem. Of course I have a "strong" 250 W power supply. So it really depends on your power supply size and quality. I also have a 3D card AGP video card, sound card and 2 internal modems and 256 Mb of RAM on my K2 -3D 400. Daniel Wysocki Twin*.*Star Computers 770-498-2582 / 800-816-0663 [log in to unmask] Fast - Reliable - Wallet Friendly ---------- From: Roberto Safora[SMTP:[log in to unmask]] Any restriction using a CD driver and a CD writer and a HDD in the same PC(plus AGP+Sound blaster+HOT 661+10/100 acer adapter)? I mean power drain The PCBUILD web site always needs good submissions. If you would like to contribute to the website, send any hardware tech tips or hardware reviews to: [log in to unmask]