Newegg.com - Antec NEO ECO 520C 520W Continuous Power ATX12V v2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply
$55
Newegg.com - Antec Basiq BP500U 500W Continuous Power ATX12V Version 2.01 Active PFC Power Supply
$60
Newegg.com - Antec NEO ECO 620C 620W Continuous Power ATX12V v2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply
$70, but $50 after rebate (and if you act fast... $10 off w/ promo code EMCKDGK26, ends 7/6 )
$55
Newegg.com - Antec Basiq BP500U 500W Continuous Power ATX12V Version 2.01 Active PFC Power Supply
$60
Newegg.com - Antec NEO ECO 620C 620W Continuous Power ATX12V v2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply
$70, but $50 after rebate (and if you act fast... $10 off w/ promo code EMCKDGK26, ends 7/6 )