Computer power requirements?

[mathwiz314]

Hey guys and girls,

I'm building a new budget system, and I'm a little concerned that the power supply I ordered isn't sufficient to power everything. Could you let me know if you think there'll be a problem?

The system will run the following:
Athlon II X4 635 (probably overclocked to around 3.5ghz)
MSI 785 motherboard
Radeon 5830
2 x Samsung 1TB Spinpoint F3 hard drives
DVD-RW drive
2 x 2GB DDR3 1600

Additionally, the graphics card will power three external displays. I expect to have a printer, an external hard drive, and other miscellaneous peripherals plugged in at random times.

The power supply I purchased is an Antec Neo Eco 400W (http://www.newegg.com/Product/Product.aspx?Item=N82E16817371029)

Thanks for your help!

 

[thedosbox]

30A on the 12V rail? You'll be fine in terms of power output.

However, that PSU only has one 6-pin PCI-e connector. Almost all 5830's require two 6-pin connectors, so you'll need to use a 4-pin molex to PCI-e adapter. Example

 

[dualsmp]

400w should be plenty. I've used one of the molex to PCI-E adapters and never had a problem. Most video cards come with an adapter if they aren't skimpy with accessories.

 

[Rifter]

that psu should be ok. will need adaptors as mentioned though.

 

[Henry Chinaski]

Since the 5830 won't pull more than 170W at full load it will work. You have a 190W room on the +12V output for the rest of your system. Anyway, a 400W PSU, even being a Seasonic one, is not the proper PSU for running a system with a 5830 graphic card. A 500W PSU with two PCIe connectors would had been a better choice.

 

[Glendor]

400w should be plenty. I've used one of the molex to PCI-E adapters and never had a problem. Most video cards come with an adapter if they aren't skimpy with accessories.

My PSU has 2x PCIe (6Pin) cables, and I had them both running to one of my GTX 275s. I was running 2x Molex to PCIe adapters to the 2nd GTX 275 card. The cable management looked very sloppy, but it got the job done.

A couple of days ago I found single (female) PCIe to double (male) PCIe adapters at Microcenter in Houston. I now have one PCIe from my PSU splitting into 2x PCIe at each card. Seems to work fine, and cleaned up my cable routing considerably. I'm going to run it through a suite of benchmarks this afternoon to see if the change effected stability / reliability any.

Seems like a good product. Does anybody foresee any problems?

Glendor...