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Is the PSU i picked out powerful enough?

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January 9, 2012 12:11:37 AM

I'm in the process of finalizing my parts list and read about how important the power supply is. I wanted to run my build by you folks to check if my power supply is sufficient for my build. I used the psu calculator, which told me i needed 350w (which i felt was suspiciously low), and i opted for a 500w psu to be safe. Should i get one with higher wattage or am i good to go?

My budget is $600

Part list permalink / Part price breakdown by merchant

CPU: Intel Core i3-2100 3.1GHz Dual-Core Processor ($99.99 @ Microcenter)
Motherboard: ASRock H61ICAFE ATX LGA1155 Motherboard ($77.55 @ Newegg)
Memory: Corsair XMS3 8GB (2 x 4GB) DDR3-1333 Memory ($29.99 @ Newegg)
Hard Drive: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive ($80.99 @ Amazon)
Video Card: PowerColor Radeon HD 6870 1GB Video Card ($144.99 @ NCIX US)
Case: Rosewill CHALLENGER ATX Mid Tower Case ($54.98 @ Newegg)
Power Supply: Antec 500W ATX12V / EPS12V Power Supply ($56.99 @ Newegg)
Optical Drive: Samsung SH-222AB DVD/CD Writer ($16.99 @ Newegg)
Keyboard: Logitech K120 Wired Standard Keyboard ($10.99 @ SuperBiiz)
Total: $573.46
(Prices include shipping and discounts when available.)
(Generated 2012-01-08 21:08 EST-0500)

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January 9, 2012 12:55:16 AM

500 Watts is PLENTY. Heck you would be fine with 400W if you weren't planning on doing any major upgrades and didn't mind using a molex to PCI-e power adapter... This is even more the case since you went with an i3 as opposed to an i5.
a b ) Power supply
January 9, 2012 12:57:06 AM

As stated 500W is plenty, and you've gone for a decent brand. 400W would power it, but probably not at the same level of efficiency.
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a c 87 ) Power supply
January 9, 2012 10:43:41 AM

350W isn't actually that low IMO. The only problem with 350W units is that they don't have enough PCIe connectors and most people have a mental barrier to cross when buying 'low' wattage PSUs.

This has the same 12V power rating as the EA500D but is more efficient:
Rosewill Capstone 450W 80Plus Gold $60 ($2 shipping)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Based on this unit:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
a c 243 ) Power supply
January 9, 2012 11:20:11 AM

mi1ez said:
As stated 500W is plenty, and you've gone for a decent brand. 400W would power it, but probably not at the same level of efficiency.

I've tested systems similar to the OP's, but with a GTX570 ( ~80w higher draw than a 6870 ), ~320w from the wall running Furmark / ~85% efficiency ( TPN550 ) / ~270w load on the psu
As far as efficiency, the OP would be closer to that magic 50% load figure with a 400w psu ( When running a power virus :o  )
!