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Antec EarthWatts EA750 vs. CORSAIR CMPSU-750HX

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May 13, 2010 1:56:19 AM

Is the Corsair CMPSU-750HX ($159 after rebate) that much better than the Antec EA750 ($85 after rebate)?

CORSAIR HX Series CMPSU-750HX 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS SILVER Certified Modular Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Antec EarthWatts EA750 750W Continuous Power ATX12V version 2.3 SLI Certified CrossFire Ready 80 PLUS Certified Active PFC "compatible with Core i7/Core i5" Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Looking to power the following:

COOLER MASTER CM690 II Advanced
ASUS Crosshair IV Formula
AMD Phenom II X6 1090T
SAPPHIRE 100258-1GL Radeon HD 4850 1GB (x2)
Intel X25-M Mainstream SSD 80GB
G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
Western Digital VelociRaptor WD1500HLFS 150GB
HITACHI Deskstar T7K250 250GB

Thanks in advance!
a b ) Power supply
May 13, 2010 2:02:40 AM

Well the Corsair PSU is more expensive because it is silver certified so its a little more efficient and might save you a few pennies a month on your power bill but I would not pay the extra cash for that personally. The Antec Earthwatts PSU's are very very very good PSU's I would say go for the Antec.
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a b ) Power supply
May 13, 2010 2:20:56 AM

Single Rail Corsair PSU are much better than the multi-rail Antec. Antec PSU's are excellent in fact i have 3 (2 Quatro 850 & 500W). My latest one is an Corsair HX1000. The reviews will speak for itself and thats data thats hard to ignor.

Corsair HX850 is the way to go. All of my future built will be corsair. Money for PSU is not an issue for me.

2 of my Antec 850 Quatros gave up after ~ 2 > years of running (24x7). I got replacements but its not acceptable situation for me.


If you want to save money the Antec will do just fine.

a b ) Power supply
May 13, 2010 2:46:19 AM

leon2006 said:
Single Rail Corsair PSU are much better than the multi-rail Antec. Antec PSU's are excellent in fact i have 3 (2 Quatro 850 & 500W). My latest one is an Corsair HX1000. The reviews will speak for itself and thats data thats hard to ignor.

Corsair HX850 is the way to go. All of my future built will be corsair. Money for PSU is not an issue for me.

2 of my Antec 850 Quatros gave up after ~ 2 > years of running (24x7). I got replacements but its not acceptable situation for me.


If you want to save money the Antec will do just fine.

I have been running Antec PSU's for a very long time I am shocked that your PSU's gave out after 2 years since I have an Antec 400 watt PSU that has been running 24\7 since 2001.
May 13, 2010 3:48:48 AM

I wouldn't get either one at those prices. The 750HX is great but no longer competitively priced since you can get the superior Seasonic X-750 for less. The EA-750 has never been competitively priced since Antec's own TP-750 is usually only a few dollars more and sometimes even a few dollars less, like right now.

Antec Truepower New TP-750 Blue
$100 shipped - $20 MIR = $80 w/promo code "24HRSALE512H" <-code may only be good for a couple more hours.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
reviews:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
http://www.hardwaresecrets.com/article/766/10

XFX Black Edition 750w
$135 shipped
http://www.buy.com/prod/xfx-black-edition-p1-750b-cag9-...
reviews:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
http://www.hardocp.com/article/2010/04/20/xfx_black_edi...

Seasonic X-750
$159 shipped w/promo code "CRUNCH10"
http://www.ewiz.com/detail.php?name=PS-SSX750G&title=Se...
reviews:
http://www.hardocp.com/article/2009/09/25/seasonic_x_se...
http://www.jonnyguru.com/modules.php?name=NDReviews&op=... (650w version)
a b ) Power supply
May 13, 2010 3:54:35 AM

^+1
a c 144 ) Power supply
May 13, 2010 7:06:33 PM

saaiello said:
I have been running Antec PSU's for a very long time I am shocked that your PSU's gave out after 2 years since I have an Antec 400 watt PSU that has been running 24\7 since 2001.

I also have one that's been running about that long.

I think the Corsair PSU is better than the Antec. But based on the price, it is not nearly twice as good.
May 13, 2010 7:51:06 PM

Thanks Logan! I was planning on buying the XFX Black Edition, and was hoping to find a good deal with no shipping. You saved me ten dollars. :bounce: 

I'm not crazy about the neon fan, but it will be buried out of view in my Coolermaster ATCS 840. I am crazy about how great a deal it is for being such a high performing PSU. Thanks again!
a b ) Power supply
May 13, 2010 8:53:14 PM

saaiello said:
I have been running Antec PSU's for a very long time I am shocked that your PSU's gave out after 2 years since I have an Antec 400 watt PSU that has been running 24\7 since 2001.



I never had PSU failure prior to that. The irony is 2 Antec Quatro's 850.....My PC's run 24x7 doing multiple things. I shot it down to clear dust. Other than that it runs 24x7. Every ~ 3 months i run prime95 and furmark to stress the PSU. Thats the condition (GPU ~ 100% is loaded and CPU ~ 100% is loaded) that the PSU is loaded. There are ~ 2 week span when i run design simulation tool that the CPU run for 100% non stop(24x7). I was partly lucky that PSU failed when it was running prime95 not my simulation work. I have Mathlab codes that use my GTX280 as processing units which speed up the process.

Both quatro's failed during stress testing.... The span of failure between the 2 is ~ 3 months. Fry's replaced both units.

I have no clue why it failed. My power line is clean. There is no abnormalities(weather disturbance) during the time of PSU failures.
May 13, 2010 8:56:23 PM

Thanks for all the great feedback! Will probably go with the TruePower, although my heart yearns for the X-750. Unfortunately, I can't get past the neon green of the XFX Black Edition, and with a fair amount of mesh on the CM690 II I'm afraid it would show through.
May 14, 2010 12:44:39 AM

Well, I changed my mind. Instead of the XFX, I decided to spend an extra $9 to get a SeaSonic X-650. I won't miss the extra 100 watts at all, and the build quality of the X-650 won me over. I was a little worried about the "Overshoot Transient Testing" that Oklahoma Wolf conducted, but I only have the vaguest notion of what it really means. I decided I was obsessing over completely inconsequential details.

Oh yeah, and that means no fugly XFX fans!
a c 91 ) Power supply
May 14, 2010 1:55:19 AM

The XFX PSU is actually a seasonic make branded by XFX.. You've made a good decision going for the X-650.. A good PSU definitely saves from a lot of headache..
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