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CORSAIR CMPSU-750HX - sufficient for Sandy Bridge?

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November 18, 2010 8:55:55 AM

I'm collecting components in advance for a planned Sandy Bridge build, and the CORSAIR CMPSU-750HX is currently available from Newegg for $119 (or $99 after rebate), which seems like a pretty good deal:

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

Considering both the i5 and i7 Sandy Bridge CPUs are supposed to be 95W, is there any reason to think that the 750HX wouldn't be sufficient for a build with 2 x HD 4850s?
November 18, 2010 9:47:02 AM

I would say you are probably ok, however if you are concerned and you want a great deal check this one out.

http://www.ncix.com/products/index.php?sku=41978&vpn=TP...

A little more than the one you are looking at but $159.99 (Canadian Funds) after mail in rebate, you won't have any power problems, rated for 3x sli with 480 GTX's.

Sorry I just watched the video in the link I posted, it would definitely be overkill but would save any concerns......
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a c 259 ) Power supply
November 18, 2010 11:12:30 AM

The 750HX will run pretty much anything up to 2 x GTX480s/HD5970s. For those you need to step up to 850/950w. It is more than enough for 2 x 4850s.
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November 18, 2010 11:33:59 AM

Hmmm, since I'm not a hardcore gamer, I suspect that the 4850s will do me for quite some time - I'm just trying to get more mileage out of the 4850 that I already have by pairing it up with another. When I do need to replace them it will probably be for a single card. But it does make me wonder whether an extra $50 - 75 for an 850w is a good investment.

Not to muddy the waters, but how does the KINGWIN LZG-850 compare (currently available for $149 from Newegg):

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

It gets a very good review on JonnyGuru, but it's new and I don't know what Kingwin's reputation for reliability is supposed to be like.
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November 18, 2010 12:24:53 PM

There's a 850w Seasonic at the Egg for 120.00, and it will blow that Kingwin out of the water quality wise. Seasonic is one of the best if not the best psu manufacturer in the world. You don't really need a 850 watts PSU, but if I were to buy one, it would be this------------> http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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a b ) Power supply
November 18, 2010 3:39:42 PM

the newer kingwins are actually quite good. but imo a corsair or antec would always be preffered :) 
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November 18, 2010 3:43:16 PM

^ I might be ignorant here but I never hear of Kingwin in the same breath as Seasonic, Corsair or some of the Antec models.
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a b ) Power supply
November 18, 2010 7:40:29 PM

Hi src1425,

Since you are looking at an 750w for $99, which will be just fine for you most likely. I thought I would throw this out there for you to consider as well: CORSAIR TX Series CMPSU-950TX 950W One thing is for sure you'll never have to worry about not having enough power. :D 

Just my 2cents, Seasonic and Corsair are great PSU's, you cant go wrong with either brand.
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November 18, 2010 8:04:36 PM

thechief73 said:
Hi src1425,

Since you are looking at an 750w for $99, which will be just fine for you most likely. I thought I would throw this out there for you to consider as well: CORSAIR TX Series CMPSU-950TX 950W One thing is for sure you'll never have to worry about not having enough power. :D 

Just my 2cents, Seasonic and Corsair are great PSU's, you cant go wrong with either brand.


Thanks - it's not a bad suggestion, I just really prefer the modular units. So it really comes down to the HX750 for $99 or wait and hope to get a deal on the HX850. Wish I knew whether there were going to be any deals on them next week!
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Best solution

a b ) Power supply
November 18, 2010 8:56:30 PM

src1425 said:
Wish I knew whether there were going to be any deals on them next week!
yeah thats a problem I guess we all have to deal with in the ever changing prices and deals of the tech world. I can tell you that within the last month the HX850 has been on sale at Newegg.com twice once for $120 after MIR and once for $130 after MIR, thats when I picked one up for myself. :D 
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November 18, 2010 11:58:58 PM

thechief73 said:
I can tell you that within the last month the HX850 has been on sale at Newegg.com twice once for $120 after MIR and once for $130 after MIR, thats when I picked one up for myself. :D 


That may be the info I need. While the $99 HX750 sure is tempting, since I won't be building anything until January at the earliest, I can probably afford to wait until one of them goes on sale again - hopefully the HX850.

Thanks all for your suggestions!
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November 18, 2010 11:59:19 PM

Best answer selected by src1425.
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a b ) Power supply
November 19, 2010 8:24:10 AM

This topic has been closed by Maziar
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