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It used be when the name Corsair was mentioned everyone knew that the topic was going to be about memory, but lately that has completely changed. To help keep up with the changing market they have had to make changes to their game plan as well and with that has come the addition of many new and exciting products. Corsair is now synonymous with not only memory, but water cooling, they have just recently added cases to their lineup with the great looking Obsidian Series 800D enclosure and least we forget the new Solid State Drives.
Today we are going to be looking of one of the new HX series power supplies, the 850 watt model we are going to examine is a middle of the road model with 450 watt model on the bottom and the 1000 watt model taking the top spot.
Packaging:
 
A Closer Look:
 
A Inside Look:
 
Performance Test :
Test Setup:
Motherboard: Asus P5Q Pro
Processor: Intel Q9550 - 2.88GHz
Hard Drive: Seagate 1.5 TB ST315005
OS: Windows Vista (build 6002, Service Pack 2)
Memory: 4GB GSkill PC8500
Heatsink: Stock Intel Heatsink
Video Cards: Sapphire HD 5770 X 2
To test the Corsair power supply we used a combination of two Software programs, the first being Sisoft Sandra Burnin Wizard which comes with Sandra Professional and second program we used it the now popular OCCT, the newest version now supports a test designed specifically for testing power supplies and from all indications appear to work very well.
For our testing purposes we connected or 900 watt load tester along with our Scope so that we could check to see what the minimum and maximum voltages were for each rail of the power supply.

For the 3-volt rail the total delta is equal to 3.322 - 3.280 or 0.042 Volts.

For the 5-volt rail the total delta is equal to 5.050 - 5.010 or 0.040 volts.

For the 12-volt rail the total delta is equal to 12.10 - 12.05 or 0.05 Volts which means that all voltage are well within specifications.
Conclusion:
The Corsair HX 750 proved itself to be a true workhorse with the ability to handle anything we could put in front of it. It also performed admirably when it comes to quiet operation thanks to the dual ball bear fan. We also want to give Corsair high marks do using cable bundle very similar to the flat ribbon cables used on the Ultra power supplies.
In our opinion if you are in the market for a mid-range power supply that not only has exceptional rail stability, is extremely quiet, has flat cables rather than round one and seven year warranty then look now further than the Corsair HX 750 power supply. With a price tag of just about $160.00 you can not go wrong with this purchase.
source: http://www.hi-techreviews.com/index.php/review-links-mainmenu-80/9875-corsair-hx750-power-supply?showall=1
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