PSU for dual GTX 460's

[samuelspark]

How much watt power supply do I need for dual GTX 460's and a 125w CPU?

 

[lilotimz]

A good 650-750w will work.

As such, I recommend PSU's from companies such as Seasonic, Corsair, Antec, and XFX because their products are high quality, independently tested by well known and trusted websites, and the past record of the company in producing and selling good products.

Here's a few i recommend...

Seasonic X 650 [it's on sale for $110!!!!!! Arguably best psu for that price]
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088&Tpk=x650

Corsair TX 750 V2
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139021&Tpk=tx750v2

Corsair TX 650 V2
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020&Tpk=Corsair%20tx%20650%20v2

XFX pro 750
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207016&Tpk=xfx%20750

XFX Core 650
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207014

Antec EA 750
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371051

Antec HCP - 750
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371052

 

[beenthere]

As far as PSUs are concerned, be informed. Before you buy any PSU read accurate, objective PSU reviews at reputable sites such as www.jonnyguru.com or www.hardwaresecrets.com on the EXACT model PSU that you are interested in as some brands have good and poor quality PSUs.

You can also get an accurate rating of how much PSU power is required for your current or future system at the PSU calculator link below. Once you know the total PSU watts required then you need to confirm that the 12v rail has enough amps. to support your Vid card(s) and the rest of the PC system.

There are several websites that show the Vid card power consumption in watts. Divide the watts by 12 to determine the amps. required on the 12v rail(s). Add 15 amps for the rest of the PC on the 12v rail and you now know the Minimum total 12v rail amps required under full load. It's best to have at least 5-10 amps. reserve on the 12v rail available under full load so the PSU is not loaded to 100%.

It's also worth noting that people often misunderstand the 80% power rating. This is a rating of the PSU's energy efficiency not it's output. 80% plus PSUs use less grid power to produce the same PC power. If it's 80% Bronze, Silver or Gold the cost savings on electricity is pretty small between Bronze, Silver and Gold unless you are paying very high rates for electricity so any 80% rated quality PSU is fine even if not Gold. For those who leave their PC on 24/7 a quality 80% PSU is a good investment.


http://extreme.outervision.com/psucalculatorlite.jsp

http://www.guru3d.com/article/geforce-gtx-560-ti-sli-review/14

http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_560_Ti/25.html

 

[samuelspark]

Best answer selected by samuelspark.