After I built my new system a couple weeks ago, I discovered that I've grown a taste for it, so I want to do something with my old system. I have a bunch of parts sitting around unused, and the only new things I would need are a case and mobo (which would cost me less than $100). The current specs are: Intel SE-440BX-3 Intel Tualatin Celeron 1400MHz 512 PC100 RAM IBM Deskstar 22GXP 13.6GB ATA66 Western Digital WD400BB 40GB ATA100 ATI Radeon 9100 64mb Netgear FA311 Fast Ethernet Adapter Creative SoundBlaster Live! Value Hitachi DVD-ROM Mitsumi 4x4x24 CD-RW What I would like to do is change this system, and my spare parts, into 2 systems. The specs would be: MSI 694T Pro VIA Apollo Pro133T OR Soyo SY-TISU Intel i815EP Intel Tualatin Celeron 1400MHz 256mb PC133 OR 384mb PC100 RAM Western Digital WD400BB 40GB ATA100 ATI Radeon 9100 64mb Linksys100TX 10/100 Network Onboard Sound Mitsumi 4x4x24 CD-RW and... Intel SE-440BX-3 Intel Pentium III 550MHz 128 PC100 RAM IBM Deskstar 22GXP 13.6GB ATA66 Creative TNT2 32mb Netgear FA311 Fast Ethernet Adapter Creative SoundBlaster Live! Value Hitachi DVD-ROM Quadrant Cinemaster DVD Decoder Now, the 1400 system would still be used for gaming, so would I notice much of an increase in performance with the new mobo? And also, which of the mobos and RAM combos would you recommend? The 550 system will probably be dual-booted with 98SE and Linux (so I can get a little more familiar) and used for the occasional DVD viewing. After all that, is this a worthwhile "project" or am I just extremely bored? I appreciate any and all opinions. Edit: I also plan to overclock the 1400 system, and the SOYO motherboard is very overclockable. Is the celeron unlockable?