Corsair HX750w (750w) ATX PSU

Conclusion

Conclusion
 
Corsair HX750wTo cut a long story short, the HX750w is every bit as good as it's bigger brother the HX850w. Throughout the testing the voltage and efficiency results were so uncannily similar that if not for the MAX load results topping out at 913w (vs 1084w on the HX850w), we would have happily put money on the HX750w simply being a HX850w with different stickers and less two of the hard-wired PCI-E connectors.
 
In effect, this positions the HX750w as THE BEST 750w PSU we've tested on OC3D to date. For an extremely reasonable £113 (over at Scan.co.uk) you get a 750w PSU that not only looks awesome with its smooth powdercoated finish and flat modular cables, but also performs among the best in its class. Efficiency levels rarely went below 90% even when running well above its rated output, and voltages refused to budge by any noteworthy amount no matter what kind of load we threw at it.
 
So, for the moment at least the choice is simple. If you're looking to power a tri-sli system and need a full six PCI-E connectors, then the HX850w is the way to go. However, if you're sitting on a small roll of £20 notes and are looking for an awesome PSU to power your single or dual GPU system, then you really should be looking no further than the HX750w.
 
The Good
- Extremely high efficiency at around 90-93%.
- Runs reasonably cool and quiet (from what we could tell over the din of the load tester)
- Excellent voltage regulation on all rails, even in cross load situations.
- Ripple almost non-existant on +3.3v and +5v rails. Also very low on +12v rail.
- High quality internal components.
- Great modular connector system with plenty of sexy 'flat' style cables.
- Well packaged. Hardly any chance of damage during shipping.
- Has a sustainable peak output of 887w when running at 50°C!
 
The Mediocre
- Would quite like for hard-wired cables to use the same 'flat' style cables as the modular connectors.
 
The Bad
- Nothing at all
 
In recognition of the HX750W's outstanding performance Overclock3D is pleased to award the unit our highly coveted Best In Class Award in the PSU class of 650-850W.
 
Overclock3D Best In Class
 
Thanks to Corsair for sending the HX750W in for review. Discuss this review in our forums.
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Most Recent Comments

27-08-2009, 15:40:15

JN
"After being blown away with the performance of the HX850w back in June it's time to fire up the OC3D load tester once more and see if HX750w can leave an equally good impression."

http://www.overclock3d.net/gfx/artic...135807159s.jpg

Corsair HX750w (750w) ATX PSU

27-08-2009, 16:06:57

Rastalovich
Corsair have definitely moved up to one of 'the' psus I look for when pondering a shopping cart. Having also had a few questionable situations with psus other people had praised for years.

Great stuff, just like the 850.

27-08-2009, 16:56:18

Hope
I am convinced, will be investing very soon

Thanks for such a good review

27-08-2009, 17:43:15

tinytomlogan
Quote:
Originally Posted by name='Hope'
I am convinced, will be investing very soon

Thanks for such a good review
*cough cough* Told ya

29-08-2009, 08:16:42

Kylevdm
I have just installed on of these in my PC although, I almost died at the smell of new plastic from the bags when I opened it, at least I knew it was brand new!!! Great piece of kit, very quiet as well!

29-08-2009, 08:33:11

JN
Quote:
Originally Posted by name='Kylevdm'
I have just installed on of these in my PC although, I almost died at the smell of new plastic from the bags when I opened it, at least I knew it was brand new!!! Great piece of kit, very quiet as well!
I have a fetish for that smell....mmmmm I can smell it now

29-08-2009, 10:09:04

Kylevdm
Quote:
Originally Posted by name='Jim'
I have a fetish for that smell....mmmmm I can smell it now
would explain a few things :P

30-08-2009, 19:36:44

Bungral
One of these will be making it's way into ma ATCS very very soon as I have it sitting here... Just need to order a few more parts.

Quite like that the PCI-E's aren't hard wired.

05-09-2009, 05:52:14

Hope
Think I will get one of these today Exciting

05-09-2009, 06:07:00

JN
Quote:
Originally Posted by name='Hope'
Think I will get one of these today Exciting
You wont be disappointed

05-09-2009, 16:02:14

clone38
Just picked up the 850 one of this psu,dam it`s sexy

08-09-2009, 15:01:15

Hope
Quote:
Originally Posted by name='clone38'
Just picked up the 850 one of this psu,dam it`s sexy
I have the 750 sat here now, wondering whether I should have got the 850 though :s

Help! Please! lol

08-09-2009, 15:38:10

JN
Quote:
Originally Posted by name='Hope'
I have the 750 sat here now, wondering whether I should have got the 850 though :s

Help! Please! lol
Whats your specs? If it helps, the 750w can hold a 880w load constantly at 50c

08-09-2009, 15:57:19

Hope
Quote:
Originally Posted by name='Jim'
Whats your specs? If it helps, the 750w can hold a 880w load constantly at 50c
It isnt the load, it is stopping the fans from stepping up above the 70% load limit

It is a Q6600 @ stock, Radeon 4850, 4 HDDs, USB KB/Mouse, 4 120mm Fans, 2 DVD RWs, ASUS P5E, 2 STICKS DDR 2

08-09-2009, 17:15:46

Kylevdm
The 750 is more then enough for that

08-09-2009, 17:49:35

JN
Quote:
Originally Posted by name='Kylevdm'
The 750 is more then enough for that
Yeah the the HX750 isnt even going to break a sweat (y)

08-09-2009, 18:11:36

VonBlade
At the risk of a thread hijack, what would roughly be the damage on a OC 920, P6T, 6GB, 3SATA, GTX275??

I tried a few online things and have had everything from 400w to 1050w(!) come up. Was planning on a 850 to keep things cool but the 750 does look tempting.

Thanks if you can.

09-09-2009, 02:41:35

PeterStoba
Quote:
Originally Posted by name='VonBlade'
At the risk of a thread hijack, what would roughly be the damage on a OC 920, P6T, 6GB, 3SATA, GTX275??

I tried a few online things and have had everything from 400w to 1050w(!) come up. Was planning on a 850 to keep things cool but the 750 does look tempting.

Thanks if you can.
Surely the 750 would be enough, even a 600w would I reckon...

09-09-2009, 06:18:23

JN
Quote:
Originally Posted by name='VonBlade'
At the risk of a thread hijack, what would roughly be the damage on a OC 920, P6T, 6GB, 3SATA, GTX275??

I tried a few online things and have had everything from 400w to 1050w(!) come up. Was planning on a 850 to keep things cool but the 750 does look tempting.

Thanks if you can.
Id say 500w load, maybe a bit lower. So 750 shud deffo do the trick.

1050w is just tekkin teh pish

09-09-2009, 07:11:42

VonBlade
Lol. Well the 1050 was on a manu's site, so obviously they have a vested interest in making you buy the flagship one

Thanks a lot peeps.

11-09-2009, 18:50:38

Hope
All up and running now, very happy with it

18-09-2009, 16:40:57

Diablo
I bought one of these for my Dad's new rig. I'm now absolutely green with envy...its so easy to work with, even with the lian li half outside power supply case (A06B I think)...power is stable and everything is cool and quiet...yum

03-10-2009, 11:36:33

mayhem
bought one. as my new power supply haven't fitted it yet but by heck she's a heavy little bugger lol. Love the flat cabling ...

Hopefully now my PC wont scream at me like a little baby crying in the middle of the night wanting to be Brest fed by its mother when trying to play on duel cards.

heres hoping any way..

04-10-2009, 15:51:01

Mr. Smith
Nice psu. Looking for a modular one for my upcoming build, might get the 850 as its only a few quid more...

04-10-2009, 17:09:45

I Hunta x
when i need an upgrade to my 600w ocz for a multi gpu setup or what ever im deff getting the 750w version if not one of the higher ones as i probably wouldnt need more tbh but nice to have the options from a beasty psu
Reply
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