What type of power supply should i get for my system

notjaylan

Honorable
Dec 20, 2012
9
0
10,510
Can someone tell me the best psu for my system:

Case: Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147153


Graphics card: PowerColor AX7850 1GBD5-DH Radeon HD 7850
http://www.newegg.com/Product/Product.aspx?Item=N82E16814131482


Optical drive: MSI IDE DVD-ROM Drive Model
http://www.newegg.com/Product/Product.aspx?Item=N82E16827100067


G.SKILL Sniper 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231417


Hard drive:Western Digital WD AV-GP WD3200AUDX 320GB IntelliPower SATA 6.0Gb
http://www.newegg.com/Product/Product.aspx?Item=N82E16822236079


Motherboard:ASRock H77 Pro4/MVP LGA 1155
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157302


CPU: Intel Pentium G860 Sandy Bridge 3.0GHz LGA 1155
http://www.newegg.com/Product/Product.aspx?Item=N82E16819116405





 
Here some options:

SeaSonic M12II 620 Bronze 620W ATX12V V2.3 / EPS 12V V2.91 SLI Ready 80 PLUS BRONZE Certified Modular $89
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151095

Rosewill HIVE Series HIVE-750 750W Continuous @40°C, 80 PLUS BRONZE Certified, Modular $89
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182133

CORSAIR CX600M 600W ATX12V v2.3 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Modular $79
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139048
 

 
For a system using a single reference clocked Radeon HD 7850 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 27 Amps or greater and have at least one 6-pin PCI Express supplementary power connector.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

You may find power supplies on the market that supply more than enough Wattage to run the system. However, some of them lack Sufficient Amperage capacity on the critical +12 Volt rail, which is necessary to properly power the critical components in the system (i.e. CPU and GPUs). This is the reason why graphics card manufacturers overstate the power supply wattage, usually by at least 50 Watts, to take into account those power supplies that have the weaker +12 Volt rail(s).

The XFX 450W Core Edition V2 Full Wired (Bronze) (P1-450S-X2B9), with its combined +12 Volt continuous current rating of 34 Amps and with one (6+2)-pin PCI Express supplementary power connector, is sufficient to power your system configuration with a single Radeon HD 7850. This PSU has Automatic Input Voltage Detection, Active PFC and a 5 Year Warranty. It uses Seasonic as the OEM.

XFX ProSeries P1-450S-X2B9 450W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Core Edition V2 Full Wired Power Supply for $52.99 ($42.99 after $10.00 rebate card if purchased between dates 12/1/2012 and 12/31/2012.)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207018
 

It will never get any 80 PLUS certification because it lacks Active PFC which is required to get the certification.

The presence of the little red input voltage selector switch is an indicator of a PSU's lack of APFC.
 

socialfox

Distinguished


Makes sense now why it doesn't qualify for it, thanks! :)