Corsair HX750w (750w) ATX PSU
Introduction & Specifications
Published: 27th August 2009 | Source: Corsair | Price: £113 |
Introduction
It's very rare that you get the best of everything all in one package. Supercars break down more than the family estate, busty blondes are rarely as intelligent as the petite brunettes and PSU's tend to be either powerful yet noisy, efficient yet unstable or in some cases, just rubbish all together. However, A short while ago here on OC3D we checked out one of two new PSU's in Corsair's immensely popular HX line-up. The HX850w, to put it simply, was an all-round stunner. Solid rails, extremely high efficiency, virtually non-existent ripple and great looks to boot. For the first time ever, you really could have your cake and eat it while driving along in your extremely reliable Lamborghini with your big breasted blonde (who happens to have a degree in engineering) sitting beside you.So when several weeks after the initial review Corsair dropped us an email asking if we'd like to take a look at the 750w model, naturally we agreed. Being released at the same time as the HX850w an educated guess would tell us that both PSU's are more or less identical probably barring some slightly uprated components in the 850w version. With this in mind we're going to be skipping past a lot of the usual waffle regarding the packaging and appearance of the HX750w and concentrating more on the performance of the unit and any differences that present themselves along the way. Of course, if you haven't yet already checked out our full and extremely detailed review of the HX850w, now is the time to do so!
• Guaranteed to sustain its full rated wattage at an ambient temperature of 50°C
• Up to 90% energy-efficiency under real-world load conditions
• 80PLUS Silver Certification
• Single +12V rail design providing up to 62A
• Multi-GPU ready
• 105°C solid state capacitors
• Active Power Factor Correction (PFC) with PF value of 0.99
• Supports ATX12V 2.3 and EPS12V 2.91 standards. Backwards compatible with ATX12V 2.01
• Auto switching circuitry for universal AC input from 90-264V
• Over Current/Voltage/Power Protection, Under Voltage Protection and Short Circuit Protection provide complete component safety
• Dimensions: 150mm(W) x 86mm(H) x 180mm(L)
• MTBF: 100,000 hours
• Safety Approvals: UL, CUL, CE, CB, FCC Class B, TÜV, CCC, C-tick
• Up to 90% energy-efficiency under real-world load conditions
• 80PLUS Silver Certification
• Single +12V rail design providing up to 62A
• Multi-GPU ready
• 105°C solid state capacitors
• Active Power Factor Correction (PFC) with PF value of 0.99
• Supports ATX12V 2.3 and EPS12V 2.91 standards. Backwards compatible with ATX12V 2.01
• Auto switching circuitry for universal AC input from 90-264V
• Over Current/Voltage/Power Protection, Under Voltage Protection and Short Circuit Protection provide complete component safety
• Dimensions: 150mm(W) x 86mm(H) x 180mm(L)
• MTBF: 100,000 hours
• Safety Approvals: UL, CUL, CE, CB, FCC Class B, TÜV, CCC, C-tick
During our initial review of the HX850w we received word that the unit had actually met 80PLUS Gold standards. However as the unit barely scraped past the requirements for meeting this certification (>87% at all loads), Corsair took it upon themselves to downgrade both the HX750w and HX850w PSU's to Silver certification. Therefore the difference in 80PLUS ratings between our initial review and this one are merely cosmetic, and does not suggest any physical differences between the PSU's. All other specifications seem pretty much identical aside from the slightly lower power output on the 12v rail which can be seen below:
| Corsair HX750w Rail Layout | ||||||||||
| DC Output | +3.3V | +5V | +12V1 | +12V2 | +12V3 | +12V4 | +12V5 | +12V6 | -12V | +5VSB |
| 25A | 25A | 62A | - | - | - | - | - | 0.8A | 3A | |
| Max Power | 150W | 744W | 9.6W | 15W | ||||||
| 750W | ||||||||||
| Corsair HX850w Rail Layout | ||||||||||
| DC Output | +3.3V | +5V | +12V1 | +12V2 | +12V3 | +12V4 | +12V5 | +12V6 | -12V | +5VSB |
| 25A | 25A | 70A | - | - | - | - | - | 0.8A | 3A | |
| Max Power | 150W | 744W | 9.6W | 15W | ||||||
| 750W | ||||||||||
With an 8A difference between the +12v rail on the HX750w and HX850w, this more or less explains the 100W deficit (8A x 12v = 96W) of the HX750w, once again implying that both of the units are more than likely 'the same' with just some minor changes inside. However, let's move over to the next page and actually open up the HX750w to find out for certain.
Most Recent Comments
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.
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.
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...
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 :p
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.
Thanks a lot peeps.
All up and running now, very happy with it :D
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
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..
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..
Nice psu. Looking for a modular one for my upcoming build, might get the 850 as its only a few quid more...
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
CSS Valid
Yeah the the HX750 isnt even going to break a sweat (y)