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PSU Help, Thanks!

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November 27, 2012 4:36:22 PM

So I am starting to build my new computer I already have the motherboard, cpu, and ram. I put my specs into a psu calculator and it said my system would run at about 420 watts that's with the cpu overclocked. I dont really want a 500 watt psu, because I might crossfire the gpu one day, so I would need a 600 watt psu.

Here is the spec so you know

Motherboard: Gigabyte GA-Z77X-D3H
CPU: i5 3570k
Ram: Patriot (2x4gb) DDR3 1600mhz
GPU: Sapphire 7870 2gb DDR5

Extras:
1 7200rpm HHD
2 120mm Fans
No DVD-tray (I have an external one that FLYS really fast)

No liquid cooling yet, but I did put that into the calculator because I do plan on getting one in the next few months


I want to try to keep the psu under $50, I know that's hard but I have seen a few

What I am considering:

Coolmax Power Supply ATX 600 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Its cheap and is 80 PLUS Certified

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a c 282 ) Power supply
a b à CPUs
a b V Motherboard
November 27, 2012 4:50:27 PM

yamahahornist said:
So I am starting to build my new computer I already have the motherboard, cpu, and ram. I put my specs into a psu calculator and it said my system would run at about 420 watts that's with the cpu overclocked. I dont really want a 500 watt psu, because I might crossfire the gpu one day, so I would need a 600 watt psu.

Here is the spec so you know

Motherboard: Gigabyte GA-Z77X-D3H
CPU: i5 3570k
Ram: Patriot (2x4gb) DDR3 1600mhz
GPU: Sapphire 7870 2gb DDR5

Extras:
1 7200rpm HHD
2 120mm Fans
No DVD-tray (I have an external one that FLYS really fast)

No liquid cooling yet, but I did put that into the calculator because I do plan on getting one in the next few months


I want to try to keep the psu under $50, I know that's hard but I have seen a few

Hi - If you want to CF in the future, you need a quality PSU and Coolmax doesn't qualify.
Secondly, it will be difficult (not impossible) to find a quality PSU for under $50 that has 4 pci-e connectors,
which you will need if you CF 2 - 7870's. Those PSU's are generally more than $50 and are in the 650w or higher range.
You might have to check the sites every day for the next week.

Quality brands: Seasonic, Corair AX, HX, & TX series, XFX, Antec, PC P&C, Enermax, Rosewill Capstone series.

Tom






What I am considering:

Coolmax Power Supply ATX 600 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Its cheap and is 80 PLUS Certified



The one component you should not be thinking "cheap" is the PSU.


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November 28, 2012 3:59:48 PM

It's not 80 Plus certified because Coolmax only have four units on Ecova's website, and none of them are 600W.
There is also the issue of it having a PFC 115 / 230 V switch; only old, outdated designs have that switch nowadays. Old designs like that are less than 80% efficient, if it is less than 80% efficient (@ 20%, 50% & 100% loads) then it can't be 80 Plus certified.
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November 29, 2012 3:32:12 AM

Silvune said:
It's not 80 Plus certified because Coolmax only have four units on Ecova's website, and none of them are 600W.
There is also the issue of it having a PFC 115 / 230 V switch; only old, outdated designs have that switch nowadays. Old designs like that are less than 80% efficient, if it is less than 80% efficient (@ 20%, 50% & 100% loads) then it can't be 80 Plus certified.



Aright thanks :)  I have have decided just to spend the extra $30 - 40 for quality, and because I am doing cpu and gpu overclocking

I am thinking about this psu: Corsair Builder Series CX 600 Watt ATX/EPS 80 PLUS http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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November 29, 2012 10:54:33 AM

yamahahornist said:
Aright thanks :)  I have have decided just to spend the extra $30 - 40 for quality, and because I am doing cpu and gpu overclocking

I am thinking about this psu: Corsair Builder Series CX 600 Watt ATX/EPS 80 PLUS http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Hi - So, are you looking to spend $65-70 total on a PSU then?

Tom

I ask because you might be able to do even better than the cx600 (nothing wrong that PSU tho)
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November 29, 2012 11:05:13 AM

yamahahornist said:
Aright thanks :)  I have have decided just to spend the extra $30 - 40 for quality, and because I am doing cpu and gpu overclocking

I am thinking about this psu: Corsair Builder Series CX 600 Watt ATX/EPS 80 PLUS http://www.newegg.com/Product/Product.aspx?Item=N82E168...



Hi again - For $5 more ($65 net after rebate) you can get the tx650, the tx series is a step up
from the cx series. At least take a look at it:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Tom
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November 29, 2012 12:15:18 PM

Don't you need a PSU with four PCIe connectors? (7870 crossfire)
Neither the Corsair CX600 nor the TX650 have four PCIe connectors, only two. I don't understand how the CX600 can be recommended as it has not been reviewed.

XFX ProSeries 650W Core Edition ($75 @ NCIX US / $10 rebate)
http://pcpartpicker.com/part/xfx-power-supply-p1650snlb...
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November 29, 2012 12:17:24 PM

Silvune said:
Don't you need a PSU with four PCIe connectors? (7870 crossfire)
Neither the Corsair CX600 nor the TX650 have four PCIe connectors, only two. I don't understand how the CX600 can be recommended as it has not been reviewed.

XFX ProSeries 650W Core Edition ($75 @ NCIX US / $10 rebate)
http://pcpartpicker.com/part/xfx-power-supply-p1650snlb...

+1
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November 29, 2012 12:23:59 PM

prototype18 said:
+1



Agreed - I forgot the "I might CF one day" part.
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November 29, 2012 3:45:40 PM

I do like both of those PSU, the problem is I need to buy them from Amazon, because I get free shipping (Amazon Prime), but it seems that PSUs are ~$20-30 more on Amazon :(  So maybe I will go newegg for the psu?
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November 29, 2012 3:56:01 PM

yamahahornist said:
I do like both of those PSU, the problem is I need to buy them from Amazon, because I get free shipping (Amazon Prime), but it seems that PSUs are ~$20-30 more on Amazon :(  So maybe I will go newegg for the psu?



If you're concerned about shipping costs, Newegg offers a trial for ShopRunner for getting free 2 day shipping from several different websites. I signed up for the trial and used it to place my order for my last build, and then cancelled the trial membership.

It should have a link for the free trial underneath the "Add To Cart" button on Newegg.
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