I think something's wrong with yours
I think you're in for a world of hurt if your world view on technology is based on Newegg 'reviews'. Those are good for compatibility research and the occasional laugh, but not for definitive opinions on the technical performance of any kind of PC hardware. For a start, none of those "reviewers" have any test equipment.
To begin, see the electrical noise charts here: Corsair TX750W Power Supply Review | Hardware Secrets
Next, look carefully at the efficiency figures: Corsair TX750W Power Supply Review | Hardware Secrets it drops below the rated 80% at some point in time.
Let's verify this, shall we? Look at this chart: Corsair TX750W Power Supply Review Review Seems the power supply is not truly 80Plus.
Here's the thread on fan noise. TX-750 fan noise - The Corsair Support Forums A simple search on the Corsair support forums point out to this being an universal issue. Here's more: http://hardforum.com/showthread.php?t=1517622
Again, the manufacturer clearly indicates a higher noise level for the TX750 than its own 650 and 850 watt supplies. Do your own research, the Corsair site should be easy enough to find for you. I hope.
I think
Don't.
May I suggest researching instead.