Recommend a PSU for this system:

Eng1neering

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Recommend a PSU for this system:



Summary:

i7 (860)
ASUS P55 mobo
EVGA Gtx260
30GB SATA II MLC SDD
6GB DDR3 1600 (PC3 16000) w/ XMP
Antec 1200 case


Detail:


ASUS SABERTOOTH 55i LGA 1156 Intel P55 ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131601

Intel Core i7-860 Lynnfield 2.8GHz 8MB L3 Cache LGA 1156 95W Quad-Core Processor
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115214

Patriot Viper II Sector 5 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 2000 (PC3 16000)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820220434

EVGA 896-P3-1257-AR GeForce GTX 260 Core 216 Superclocked Edition 896MB 448-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130433

Antec Twelve Hundred Black Steel ATX Full Tower Computer Case
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129043

OCZ Vertex Series OCZSSD2-1VTX30GXXX 2.5" 30GB SATA II MLC Internal Solid state disk (SSD)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227393


And if it were: 2x EVGA Gtx260 (SLI) ?
 
Solution
The general rule of thumb is a high quality 500 to 550 watt power supply with sufficient current (amps) on the +12 volt rail(s) can easily power a system with any single video card made. A high quality 700 to 750 watt power supply with sufficient current (amps) on the +12 volt rail(s) can power a system with two video cards operating in dual mode. There are a few exceptions like the new ATI Radeon HD 5XXX series cards which use less power due to their energy efficiency.

A high quality 500 to 550 watt psu will have a +12 volt rail rated at 40 amps. A high quality 700 to 750 watt psu will have a +12 volt rail rated at 60 amps.

In addition the power supply should be at least 80+ Bronze certified for energy efficiency. There are some...
The general rule of thumb is a high quality 500 to 550 watt power supply with sufficient current (amps) on the +12 volt rail(s) can easily power a system with any single video card made. A high quality 700 to 750 watt power supply with sufficient current (amps) on the +12 volt rail(s) can power a system with two video cards operating in dual mode. There are a few exceptions like the new ATI Radeon HD 5XXX series cards which use less power due to their energy efficiency.

A high quality 500 to 550 watt psu will have a +12 volt rail rated at 40 amps. A high quality 700 to 750 watt psu will have a +12 volt rail rated at 60 amps.

In addition the power supply should be at least 80+ Bronze certified for energy efficiency. There are some models available which have achieved 80+ Silver and 80+ Gold Certifications.

Before purchasing a new psu you will need to decide whether you will eventually have a pc with one or two video cards.

Corsair, PC Power & Cooling, and Seasonic are some of the brands that have a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty. Some of the newer models come with a 7 year warranty. Lately we've been seeing a few other brands offering some high quality units. An example would be the Antec Earthwatts series which is a major improvement over Antec’s older psu’s like the Basiq models.
 
Solution

Eng1neering

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Thank you very much for the insight -- truly appreciate it.


For the system above, let's say on single video card setup...

Would you recommend one of these PSU?


Rosewill Green Series RG630-2 630W Continuous @40°C,80 PLUS Certified,ATX12V v2.3,SLI Ready,CrossFire Ready,Active PFC"Compatible with Core i7, i5" Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182185
+12V Rails = 4

CORSAIR CMPSU-550VX 550W ATX12V V2.2 SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004
+12V Rails = Single
 
The Corsair VX550!

Here's a link to a technical review of the Corsair VX550:

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=62

Rosewill has a reputation for low quality power supplies. They wound up on "not recommended" lists and were bashed quite a bit. They did try to make some improvements and partially succeeded. They now have a small handful of psu's that are adequate. The rest are low budget psu's of questionable performance and value.
 

The Rosewill in question didn't do too bad when reviewed;
http://www.hardwaresecrets.com/article/881

Newegg has a promo code for $20 off ( ending today ) making it $50, I'd call it a good budget buy at that price.