Will my older PSU work?

[Snewo]

I'm upgrading most of my computer today. I have two concerns, one, the 525 watt PSU I have. Two, the cable lengths of a new PSU if I do in fact need a new one because of the case I have.
This is my parts list.

New Parts-
Motherboard: MSI 790FX-GD70
Processor: AMD PHENOM II X4 965 BE
CPU FAN: COOLER MASTER Hyper 212 Plus
Memory:OCZ AMD Black Edition 4GB DDR3 1600
Graphics Card: XFX HD-577A-ZNFC Radeon HD 5770 (Juniper XT) 1GB x2
Hard Drives: Western Digital Caviar Black500GB 7200 RPM 32MB Cache x2

Old Parts-
PSU: Corsair HX 520w modular
Case: Antec P182
Hard Drive: Western Digital Caviar Green 1TB 7200 RPM 16MB Cache
DVD Drive: LG Blu-Ray Drive CH08LS10

I really think the Graphics Cards are going to drain this. If I remove one, will it be okay?

 

[dualsmp]

The 5770 isn't really a power hog so you will be fine with 2x 5770 in Crossfire. Check the link below...The test system uses a overclocked i7, but power wise it shouldn't be much different than your setup. If you check the chart for loaded power the 5770 x2 is 390 watts (AC), and with a 80plus PSU is only about 315 watts (DC). Your Corsair 520w power supply will have plenty of power to spare.

http://www.anandtech.com/video/showdoc.aspx?i=3658&p=13

 

[Snewo]

Thanks dualsmp. That helped. I'm wrighting on the new rig right now! Big performance gains! All but the hard disks.

 

[Grimhammer82]

I am looking to build a similar system with similar power constraints, so I figured I'd chime in here rather than clutter up the place with a new thread.

This is my tentative build:

http://detonator.dynamitedata.com/c...com/Product/Product.aspx?Item=N82E16813131398ASUS M4A79XTD EVO AM3 AMD 790X ATX AMD Motherboard

AMD Phenom II X2 550 Black Edition Callisto 3.1GHz Socket AM3 80W Dual-Core Processor

XFX HD-577X-ZNFC Radeon HD 5770 1GB 128-bit DDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card (x1 no Crossfire... yet)

CORSAIR XMS3 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model TW3X4G1333C9A G

Western Digital Caviar Black WD5001AALS 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive

Sony Optiarc 24X DVD/CD Rewritable Drive Black SATA Model AD-7240S-0B

I want to keep my old Antec Smart Power 500w PSU if at all possible. I need to get this old PSU tested as it's emitting a high pitched whine when it's running, but if it's still good, I'm hoping to reuse it.

I am also open to suggestions/critique of the build itself.

Thanks in advance.

 

[dualsmp]

500w will easily power that setup. If the PSU checks out then go ahead and use it.

If you need a new one:

With only one video card either of these should be fine. Only one PCI-E connector though.
http://www.newegg.com/Product/Produc...-029-_-Product
or
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139008&Tpk=Corsair 400w

If you need two PCI-E (for x2 video cards) then this is a good deal.
http://www.newegg.com/Product/Produc...-030-_-Product

 

[Grimhammer82]

Thank you. I'm hoping my old one checks out. If I decide to go Crossfire later on down the road, it'll be in conjunction with a PSU upgrade for sure.