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Help selecting a PSU

Last response: in Components
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September 4, 2012 3:30:48 PM

Hello,

Just wondering if I can get some help with choosing a suitable PSU for the other components I'm buying. Essentially I want a PSU that will supply me with enough power to run my system and a little more for overclocking.

My components list :

MOBO : ASROCK Z77 Extreme4 (8 + 4 pin power)
GPU : Gigabyte GTX 670 windorce
CPU : i5-3570k
RAM : 2 X 4GB modules of corsair CMZ8GX3M2A1600C9B
HDD : Western Digital Caviar Blue 1TB SATAIII
SSD : Crucial CT128M4SSD2
ODD : Sony AD-7280S-0B

Any advice would be much appreciated!

More about : selecting psu

September 4, 2012 5:13:28 PM

Do either of those have the 8 pin and 4 pin connector required for my mother board?
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a b ) Power supply
September 4, 2012 5:19:39 PM

All PSUs come with the 24 main ATX connector and the 8 pin CPU connector. If they didn't then it wouldn't be able to start the computer. What differs is the number of 6 pin connectors that connect to the graphics card.
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a c 158 ) Power supply
September 4, 2012 6:18:39 PM

Stay away from the GX series of Coolermaster PSUs; the only series of PSUsfrom them that I would recommend is the Silent Pro Series. A system with single GTX 670 Windforce OC will total power draw of about 330W; 20-30W higher than a stock GTX 670. A system with a single GTX 670 requires a 500W PSU with two 75W 6-pin PCIe power connectors and should have at least 32A on the 12V rails. The OCZ ModXstream 600W is a decent PSU that can usually be found with a rebate that makes it a good value purchase. A great deal on an very good PSU right now in the US is the Antec Neo Eco 520W: http://www.newegg.com/Product/Product.aspx?Item=N82E168... It's based on the outstanding Seasonic S12II-520 and is a great deal at $50 after instant discount - no rebate wait.
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a c 1203 ) Power supply
September 4, 2012 6:56:45 PM

Is there any plan for running two graphics card in 2-way SLI mode in the future?

Which GIGABYTE GeForce GTX 670 card do you have, the GV-N670OC-2GD or the GV-N670WF2-2GD? The power requirements are different for each of those cards.

For a system using a single GIGABYTE GeForce GTX 670 (GV-N670WF2-2GD) graphics card GIGABYTE specifies a minimum of a 550 Watt or greater power supply that has a combined +12 Volt continuous current rating of 30 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

For a system using a single GIGABYTE GeForce GTX 670 OC (GV-N670OC-2GD) graphics card GIGABYTE specifies a minimum of a 550 Watt or greater power supply that has a combined +12 Volt continuous current rating of 35 Amps or greater and that has at least one 6-pin and one 8-pin PCI Express supplementary power connectors.

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

Overclocking of the CPU will require an additional increase to the combined +12 Volt continuous current ratings (i.e. for an i5-3570K I would add 3 Amps more), recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock you are trying to achieve.
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a c 1203 ) Power supply
September 4, 2012 7:12:38 PM

Vorsten said:
what about the Corsair CX600

http://www.amazon.co.uk/Corsair-CMPSU-600CXV2UK-Builder...

The Corsair Builder Series CX600 V2 (CMPSU-600CXV2), with its combined +12 Volt continuous current rating of 40 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is sufficient to power your system configuration with a single GIGABYTE GeForce GTX 670 (GV-N670WF2-2GD or GV-N670OC-2GD).
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a c 1203 ) Power supply
September 4, 2012 7:33:49 PM

Vorsten said:
sorry about the late confirmation, the gtx 670 model i'm after will be the GV-N670OC-2GD. So which PSU will be better for the overclock. The XFX core 550W or the CX600

I would choose the XFX over that Corsair CX600V2.
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September 4, 2012 7:34:18 PM

sorry about the late confirmation, the gtx 670 model i'm after will be the GV-N670OC-2GD. So which PSU will be better for the overclock. The XFX core 550W or the CX600
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September 4, 2012 7:38:07 PM

sorry to pester but what are the specific reasons for choosing the XFX over the corsair
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a c 1203 ) Power supply
September 4, 2012 7:43:06 PM

Vorsten said:
sorry to pester but what are the specific reasons for choosing the XFX over the corsair

Better OEM and a longer Warranty.

Corsair Builder Series CX600 V2 (CMPSU-600CXV2)
OEM: CWT (Channel Well Technology)
Warranty: 3 Years

550W XFX Pro Series Core Edition (P1-550S-UKB9)
OEM: Seasonic
Warranty: 5 Years
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a c 158 ) Power supply
September 4, 2012 7:48:39 PM

The XFX has 5years of warranty versus 3 for the CX600. It is made by Seasonic and has excellent electicals and build quality: http://www.kitguru.net/components/power-supplies/zardon...
As previously mentioned it also has more amperage (4A more) available on the 12V rails than the CX600V2; amperage on the 12V rails is more important than the wattage rating since the tow largest power draws are on the 12V rails from the CPU and GPU. Last, but not least...it costs less than the CX600 while having all of the above advantages.

Edit: Forgot to mention that the XFX is also 80+ Bronze certified while the CX600 is simply 80+...the above reasons are more significant but I had to throw that into the fray.
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September 4, 2012 7:55:25 PM

Brilliant cheers for the quick replies and great advice guys, will definitely being getting the XFX.
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a c 158 ) Power supply
September 4, 2012 8:05:34 PM

Glad we could help - Excellent choice and enjoy your new PSU!
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September 5, 2012 12:01:04 AM

I'm about to buy the exact same PC(only the RAM might be different), but I'm gonna buy it at my local computer store and they don't have all the the parts(they don't have that nice XFX PSU you're talking about)

Do you have some other recommendations for a PSU manufactured by Seasonic?

Here's the link to the website where I'm gonna buy my stuff:

http://www.microbytes.com/index.php?cPath=1_2&
osCsid=8e7dbbddacc4f9a2f0ba98bc023d54ba

The guy at the store recommended me the Cooler Master Silent Pro Series 700W. Is there a better option that this in what they have available on their website?

EDIT:
Just saw that there is a mail-in-rebate of 15$ on the 720W Cooler Master Silent Pro Series M2.
After searching a bit on the web, it looks like it's the new generation of the Silent Pro Series and it comes with a 5 year warranty.
It's a bit expensive for a PSU, is it worth it?
I must admit I would like a "silent" PSU, no idea how silent it is, but if it's a real feature, it might be worth the money.

No idea how to check and evaluate the A and volts or the rail thing you guys were talking about though. lol

Thanks for your time
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September 5, 2012 12:22:11 AM

Found some more details:

Quote:
On the alternate side to the fan grill is the specifications label. This details max wattage and total ampage for each rail. The +12v uses a single 58A rail which should provide enough juice for the most demanding of needs including NVIDIA SLI and AMD CrossfireX – this really depends on the graphics card used though – always be sure to check. The specifications label also has label of authenticity and standards.


How good is 58A? lol
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