Hi, This my first post here. I have known this forum for 1 day, and already learnt lots! But anyway... I am building a new computer, and I think these are compatible, but they may not be. I have been trying to find a cheaper PSU, but did not have much luck.not much luck. So, here it is: Celeron D 341 (may upgrade to E2180 at some point): -2.93ghz -FSB 533 -256kb L2 Cache -Socket LGA775 -64 bit MSI P4m900m2-l: It won't let me put the link, so google "P4m900m2-l" and it will be in the first two results. Kingston memory: -DDR2, 240pin -PC2-3200 -400mhz -512mb -1.8v Case: -Jeantech JN131 -Micro ATX Hard Disk-Refurbished (white label), Ebay -Sata 150 -20gb PSU: -270w -3x Molex 4 pin connector -2x Sata -24 pin Connector -1x 4 pin PSU connector -1x Floppy Connector Heatsink and fan: -Socket LGA775 -Akasa AK-956SF DVD Drive: -LiteOn DH-16D2P -IDE Has anyone got any tips or anything I have missed? Also, is a PSU with dual 12v connectors compatible with a motherboard with a single connector slot? Thanks.