Power Supply Wattage for Gaming Rig

[BrianAshmore]

Sup, friendly neighborhood experts.

I'm building myself a ~1100$ gaming rig, and outlined the following:
Casing:
http://store.antec.com/Product/benclosure/NINE-HUNDRED-TWO-V3/0-761345-45006-5.aspx

Motherboard:
http://www.asrock.com/mb/intel/z77%20pro3/

Graphics Card:
http://xfxforce.com/en-us/products/amd-radeon-r9-series/amd-radeon-r9-270-double-dissipation-edition-r9-270a-cdfc

Processor:
http://ark.intel.com/products/69114/Intel-Core-i5-3350P-Processor-6M-Cache-up-to-3_30-GHz

Memory:
2x4GB Kingston DDR3 1600mhz sticks

HDD:
1TB, 36MB cache, 7200 rpm SATA3


And now I'd like to ask people who understand power supplies which wattage I will need for the above setup, and which brands to look for and avoid. I might get a second card for crossfire once I gather some more money for it.

EDIT: Would this be a good choice?

http://www.amazon.com/XFX-PRO650W-Edition-Bronze-Certified/dp/B0045L5LGI

Thank you in advance for your time!

 

[Norwegian]

Hey there!
The component in your pc that sucks alot of power is the graphics card! So for your rig, the 650W psu will fit just perfect I will recommend Corsair and Cooler Master!

BUT if you are going crossfire with this, a 750W will be the way to go!

 

[jaraldo]

For dual cards you want at least an 750w PSU.

Seasonic is the best brand. Antec and XFX are also good brands; seasonic makes many of their psus aswell.

I have the 620w version and haven't had any problems with it for 3 years. 5 year warranty
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151095&cm_re=seasonic_750w-_-17-151-095-_-Product

 

[Adroid]

That xfx PSU is plenty for a single 270. You could actually get a 550w xfx.

Edit: Yea I would go with 750W for crossfire..

 

[qbsinfo]

power requirements:

Z77 motherboard chipset : 8 watts
GPU R9 270 : 120 watts MAX while gaming
DDR3 RAM : 8 watts each stick - 16 watts
i5-330P : ~70 watts
HDD : 10 watts

TOTAL 224 watts

2 things:

please do not have an upgrade path of Xfiring a lower end card. stepping up to a better single card is much more advisable. and also don't get a PSU with wattage that is more than twice the amount you need - you completely throw efficiency out the window.

this will work if you are on a budget:
Antec VP-450 Price: $37.99 & FREE Shipping.

though it doesn't have PFC it still provides good efficiency:
Antec VP450 Power Supply Review

Power supplies without a PFC circuit usually provide, at least at some point, efficiency below 80 percent. However, this simply didn’t happen with the VP450, which presented efficiency between 80.3% and 85.5 percent. This unit, though, can’t qualify for the 80 Plus certification, as a PFC circuit is required to obtain it.

In addition, most budget power supplies have a fake label that says the unit has two +12 V virtual rails, while in reality the power supply doesn’t have an over current protection circuit, which is necessary for the power supply to have more than one +12 V rail. This doesn’t happen with the VP450, which really has two +12 V over current protection channels.

 

[qbsinfo]

yep totally legitimate that a manufacturer recommends their own beefier PSU for a system that will use < 250 watts:
http://uk.hardware.info/reviews/4976/26/amd-radeon-r9-270-review-energy-consumption

 

[Dark Lord of Tech]

Crossfire Ready \ Semi-Modular and made by SEASONIC.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Antec HCG M 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($75.00 @ NCIX US)
Total: $75.00
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-05-25 12:40 EDT-0400)

 

[Pondering]

I am getting the XFX PRO750W Core Edition 80+ Bronze http://www.amazon.com/gp/product/B0045L4BJ6 (Now I just need to get good graphics cards so that I can reach the 40% load *sigh*)

The Antec 900 has the windowed side so HCG M 750W might be a better idea if you care about tidiness and airflow. I have the HCG M 620W and it is amazingly quiet. For me personally I prefer the non modular PSU now that I have a good sized mid-tower since the modular power supplies have a modular board that uses different capacitors and it is easy enough to bundle the wires next to the power supply in any mid tower with bottom mount PSU

 

[Karadjgne]

The Antec HCG semi/modular psu's are Seasonic rebrands, arguably the best there is. The non-modular are made by Delta, arguably the best there is. Either way, you are looking at excellent psu's, in a select group of 'the best there is'.