ok so i have a bc im building for a family member its 2 gigs of ddr2 ram 1 sata hard drive 1 dvd drive an E8400 core 2 duo overclocked to 4.0 and lastly an nvidia 7950 GX2 there family members budget is around 33$ below are links to the psu's
http://www.ebay.com/itm/Power-Star-650w-Max-ATX-Power-Supply-w-20-4-Pin-SATA-On-Off-Switch-Brand-New-/221932463255?hash=item33ac34a497:g:aLEAAOSw5ZBWOudT
http://www.ebay.com/itm/Brand-NEW-Lead-Power-650w-MAX-Dual-Fan-ATX-Power-Supply-20-24Pin-AUX-SATA-/332045832112?hash=item4d4f794fb0:g:8YEAAOSwB09YO0O9
http://www.ebay.com/itm/650W-Single-Large-Cooling-Fan-Power-Unit-Brick-Wires-Upgrade-PC-System-Intel-AMD-/351701220810?hash=item51e306bdca:g:4JQAAOSw-RRXBYEl
http://www.ebay.com/itm/KENTEK-650-Watt-120mm-Fan-ATX-600W-650W-Black-SATA-PCIE-Power-Supply-Quiet-/261030070680?hash=item3cc69ac998:g:kugAAOxyLchRyOnQ
http://www.ebay.com/itm/New-SHARK-650-Watt-Quiet-120mm-Fan-ATX-600W-650W-Black-SATA-PCIE-PC-Power-Supply-/272618237879?hash=item3f79502fb7:g:5hQAAOSww3tY49uG
http://www.ebay.com/itm/EVGA-80-PLUS-600W-ATX-12V-EPS-12V-Power-Supply-Black-/201650469528?hash=item2ef34dfa98:g:FToAAOSw-kdXyT2H
http://www.ebay.com/itm/Power-Star-650w-Max-ATX-Power-Supply-w-20-4-Pin-SATA-On-Off-Switch-Brand-New-/221932463255?hash=item33ac34a497:g:aLEAAOSw5ZBWOudT
http://www.ebay.com/itm/Brand-NEW-Lead-Power-650w-MAX-Dual-Fan-ATX-Power-Supply-20-24Pin-AUX-SATA-/332045832112?hash=item4d4f794fb0:g:8YEAAOSwB09YO0O9
http://www.ebay.com/itm/650W-Single-Large-Cooling-Fan-Power-Unit-Brick-Wires-Upgrade-PC-System-Intel-AMD-/351701220810?hash=item51e306bdca:g:4JQAAOSw-RRXBYEl
http://www.ebay.com/itm/KENTEK-650-Watt-120mm-Fan-ATX-600W-650W-Black-SATA-PCIE-Power-Supply-Quiet-/261030070680?hash=item3cc69ac998:g:kugAAOxyLchRyOnQ
http://www.ebay.com/itm/New-SHARK-650-Watt-Quiet-120mm-Fan-ATX-600W-650W-Black-SATA-PCIE-PC-Power-Supply-/272618237879?hash=item3f79502fb7:g:5hQAAOSww3tY49uG
http://www.ebay.com/itm/EVGA-80-PLUS-600W-ATX-12V-EPS-12V-Power-Supply-Black-/201650469528?hash=item2ef34dfa98:g:FToAAOSw-kdXyT2H