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Need to Choose One of 4 PSUs. Help Me Narrow it Down?

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February 20, 2013 3:03:28 AM

Edit: 3 PSUs. I ruled out one of them but can't change the title (I don't think).

Hey folks! So I've done my reading on what to look for in PSUs and I've got it narrowed down to 3. Here's the system:

CPU: i5-3350P
Mobo: MSI Z77A-G45
DDR3 RAM: Crucial Ballistix Sport 8GB (2 x 4GB)
Video Card: GIGABYTE GV-R795WF3-3GD Radeon HD 7950
Case: COOLER MASTER CM-690 II Advanced KKN5
(this is as far as I've gotten; sorry I don't have full specs yet)

How I plan to build and run my system (heaviest set-up I can realistically see using) :
http://postimage.org/image/uobvqlo09/
(source: eXtreme Power Supply Calculator Pro)

No plans to OC or SLI/XF. Budget is <$1000. Plan is to probably only use the computer for gaming (highest playable settings, 1080p) and general use. Probably won't ever have more than 2 sticks of RAM. Likely only 4 or 5 fans (plus CPU stock). Only a few USB devices. Max 2 HDDs and I don't even know if I'm going to spring for the system SSD.

All three of the PSUs I've picked out have good voltage regulation and ripple suppression. All are single +12V rail (just happened that way; I don't care one way or the other). Here they are:

PC Power and Cooling Silencer Mk III Series 600W
http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
5yr Warranty
80+ Bronze
Semi-modular
$85 (after rebate)

OCZ ZT Series 650W
http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
5yr Warranty
80+ Bronze
Modular
$90 (after rebate)

CORSAIR Professional Series HX650 650W
http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
7yr Warranty
80+ Gold
Semi-modular
$100 (after rebate)

I figure since this is an absolute maximum I should still be safe with a 600W or 650W and still have room for maybe an add-on here and there, but do you all think I should be opting for more overhead in terms of the wattage? Seems like overkill for a (relatively) basic set-up like mine. All thoughts are welcome, though :) 

More about : choose psus narrow

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a b ) Power supply
February 20, 2013 3:09:44 AM

You're fine with a quality 500W psu, the 7950 requires a 500w psu with ~25A on the +12v rail, that cpu has a really low power consumption, so you can expect less.
That system will not draw more than ~300W at load and since you're not planning to add another one, a good choice will be the xfx 550 core edition, it's made by seasonic :
http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
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February 20, 2013 11:16:42 AM

Well that's good news, since my budget is kinda tight as it is :)  I'd love to hear from some other folks for a second opinion... anyone care to second djangoringo?
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a b ) Power supply
February 20, 2013 1:24:36 PM

+1 for XFX, solid and reliable.
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a b ) Power supply
February 20, 2013 2:11:58 PM

+ another for the XFX if not the corsair.
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a c 307 ) Power supply
February 20, 2013 2:12:59 PM

SyntaxSocialist said:
Edit: 3 PSUs. I ruled out one of them but can't change the title (I don't think).

Hey folks! So I've done my reading on what to look for in PSUs and I've got it narrowed down to 3. Here's the system:

CPU: i5-3350P
Mobo: MSI Z77A-G45
DDR3 RAM: Crucial Ballistix Sport 8GB (2 x 4GB)
Video Card: GIGABYTE GV-R795WF3-3GD Radeon HD 7950
Case: COOLER MASTER CM-690 II Advanced KKN5
(this is as far as I've gotten; sorry I don't have full specs yet)

How I plan to build and run my system (heaviest set-up I can realistically see using) :
http://postimage.org/image/uobvqlo09/
(source: eXtreme Power Supply Calculator Pro)

No plans to OC or SLI/XF. Budget is <$1000. Plan is to probably only use the computer for gaming (highest playable settings, 1080p) and general use. Probably won't ever have more than 2 sticks of RAM. Likely only 4 or 5 fans (plus CPU stock). Only a few USB devices. Max 2 HDDs and I don't even know if I'm going to spring for the system SSD.

All three of the PSUs I've picked out have good voltage regulation and ripple suppression. All are single +12V rail (just happened that way; I don't care one way or the other). Here they are:

PC Power and Cooling Silencer Mk III Series 600W
http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
5yr Warranty
80+ Bronze
Semi-modular
$85 (after rebate)

OCZ ZT Series 650W
http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
5yr Warranty
80+ Bronze
Modular
$90 (after rebate)

CORSAIR Professional Series HX650 650W
http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
7yr Warranty
80+ Gold
Semi-modular
$100 (after rebate)

I figure since this is an absolute maximum I should still be safe with a 600W or 650W and still have room for maybe an add-on here and there, but do you all think I should be opting for more overhead in terms of the wattage? Seems like overkill for a (relatively) basic set-up like mine. All thoughts are welcome, though :) 


Hi - all three of those are more power than you need (as dj said). Of those three
I would go with the MKIII as it is least expensive, has several good reviews,
and made by Seasonic.
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February 22, 2013 1:18:17 AM

Sorry for the delayed response. I was kinda thinking it would be a good idea to go overkill on a PSU, since it could well be incorporated into my next build (which will probably be more demanding in terms of power). That's why I was leaning toward 600W and 650W units. (though now I'm thinking about the XFX 650...)

The XFX also doesn't show up anywhere on this list. That said, this list is quite obviously non-current... what do you guys think about it?

http://support.amd.com/us/certified/power-supplies/Page...

7 year warranties are enticing, too, making the corsair really appealing, especially with that rebate (ending tonight, so I'm hoping to make a decision VERY soon).

Anyway, I guess I'm just not totally sold on the XFX because it made my shortlist but not my top three. If anyone has more thoughts on the matter, please feel free to share.
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a b ) Power supply
February 22, 2013 2:09:43 AM

The xfx psus are made by seasonic, there's a lot of quality psus that it's omitted in the amd list, there's some psus in that list that are inferior to the xfx.
The xfx 550 will do for any single card(single gpu on the pcb, yes even the geforce titan), you can expect the next components to be less demanding in power, the cards are getting less power hungry and the same for the cpus, so you don't need to worry about the capacity/amps of the psu.
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February 22, 2013 2:21:02 AM

djangoringo said:
The xfx psus are made by seasonic, there's a lot of quality psus that it's omitted in the amd list, there's some psus in that list that are inferior to the xfx.
The xfx 550 will do for any single card(single gpu on the pcb, yes even the geforce titan), you can expect the next components to be less demanding in power, the cards are getting less power hungry and the same for the cpus, so you don't need to worry about the capacity/amps of the psu.


Yeah it's funny, you know I was looking into that and it looks like things have just been getting more efficient faster than they get more power hungry. Good stuff; not what I expected. Looks like a 550 or 600 will do me just fine down the road, especially since I don't think I'm the kind of guy that's going to ever feel the need to SLI/XF. It's a lot of extra money for such nominal performance increases... Single card upgrades look like the way to go for a while yet, for me :) 

What about warranty, though? Would it not make more sense to spring for a unit with a 7 year warranty over a 5 year? The point may be moot, anyway, as I've ruled out the corsair for other reasons, but I'm curious now.

As I've ruled out the Corsair, the rush is no longer on. But now I'm considering going digging for some lower wattage units at similar prices and qualities. Could maybe find a deal... Dang; thought I was getting close to choosing there =P

I'm going to take a quick look around and report back with any interesting findings :) 
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a b ) Power supply
February 22, 2013 2:33:47 AM

The HX650 (new unit) has the chirping noise problem, it doesn't affect the electrical performance, but it has that noise.
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February 22, 2013 3:10:54 AM

Here's what I've got. Both are well within pretty stringent requirements for voltage reg and ripple suppression, Japanese capacitors, etc. They seem pretty decent, too. What are people's thoughts in relation to the XFX? The XFX's price is certainly right ($59 for the 550W; $90 for the 650W), so if all else is pretty much equal, I guess I'll have my final answer, eh?

SeaSonic G Series SSR-550RM 550W
http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
Single 12V rail
5yr Warranty
80+ Gold
Semi-modular
$90

OCZ ZT Series 550W (One step below the 650W OZC ZT above)
http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
Single 12V rail
5yr Warranty
80+ Bronze
Fully modular
$80 (after rebate)

Quote:
The HX650 (new unit) has the chirping noise problem, it doesn't affect the electrical performance, but it has that noise.


Good to know. I actually think I remember reading something about that now... good thing I didn't buy, then!
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a b ) Power supply
February 22, 2013 3:37:59 AM

The xfx 550 is a quality psu made by seasonic, there's reviews of it, it's a good psu.
Now if you want a modular psu, that SeaSonic SSR-550RM is a good choice.
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February 22, 2013 6:43:36 AM

just go for s12ii520 by seasonic, no random problems like whirring noise of coils which the 620w model has and some corsair models too .
read about 200 reviews on various sites it can only be DOA or good to go.
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a b ) Power supply
February 22, 2013 4:41:46 PM

The SeaSonic SSR-550RM is fine, i would get that one if you want a modular psu.
The s12ii520 in Canada is almost at the same price as the SSR-550RM, not worth it, it's not modular, for that the xfx 550 core edition is a better choice, since it's much more cheaper.
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February 23, 2013 4:46:55 PM

Thanks so much for all your help, everyone. In case you haven't noticed I'm stupidly indecisive. But the XFX 550 seems excellent. I'm still a little on the fence about maybe springing the extra moolah for the PC Power and Cooling Silencer Mk III Series 600W (unless someone has a reason I shouldn't). I thought I'd found it on sale for $60, but all the stores in my region seem to be out of stock (no surprise there).

Anyway, thanks again for all you help, folks!
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February 23, 2013 4:47:11 PM

Best answer selected by SyntaxSocialist.
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