I am building Mini ITX bitfenix prodigy build. Using Asus Z77 mini itx mobo with the vertical vrm board. OC'd i7-3770k to 4.5ghz and gigabyte triple fan Radeon 7970 Ghz edition stock oc of 1100mhz requires 2x 8 pin pci-e and recommends a 600 watt power supply.
When using modular cabling the bitfenix prodigy can only accept 140mm depth power supplies. So I am looking for a fully modular, 550 watt minimum, 140mm max depth PSU.
Are there any 550w + 140mm MAX depth Power Supplies that are fully modular as well, also needs 2x 8 pin or 6+2 pin pci-e connectors?
SILVERSTONE ST65F-G 650W ATX 12V v2.3 / EPS 12V SLI Ready CrossFire Ready 80 PLUS GOLD Certified Full Modular Active PFC Power Supply
Compact 140mm Depth Design for Easy Integration
2x 6 pin and 2x 2+6 pin pci-e
It may be 140 dollars but if you want a fully modular 140mm depth power supply that's at least 600 watts there is really no other option even. I can't find a single other 600+ watt fully modular 140mm depth psu with proper pci-e connectors.
Just a note. If you want to save some money, the space under the motherboard on this case is very big and you generally can't use it for much. There's a lot of space to tuck excess cables, if that's an option for you.
If that isn't, then like you said there isn't a huge amount of options. There's quite a lot of space in there but because of the solid wall and the way modular connectors usually fit (straight in), you are a bit limited. The AX series of Corsair is supposed to fit fine, and they are 160mm long, so you might have more room than you think.
160mm PSU's fit fine - We've tested it ourselves with fully modular, semi modular, and non-modular. And if you're not liking the space, try 150mm. A little more leg room. You don't have to go with 140mm.