Bests & Worsts Reviews from Amazon

When it comes to Power Supplies, never be stingy and spend a good amount on a solid one. Corsair is one of the most well known PSU companies and their supplies are up top in terms of qualities and specs. When it comes to buying a power supply it is important to remember that two things are needed: 1. Enough watts, look up the total watts of everything you own and buy a power supply that is at least 100w more so as to give you enough headroom for upgrades or overclocking if thats your cookie. 2. Enough Amperage. This is veryyy important. The +12v rail is whats important as most modern cards require a minimum of 25A on a single rail. Dual rails are also nice if they are each at 25. For example, my XFX DD Black edition Radeon HD 7970 will not run on my old psu. It was a solid Rosewill 600w psu which had more than enough watts to run it, however, the thing maxed at 35A on both rails together. The minimum needed for the card was 36. This PSU, has 750w and the following ratings on each charge: +3.3V@25A, +5V@25A, +12V@62A, -12V@0.8A, +5VSB@3A. +12v@62A is excellent for the card now. This also gives me headroom if any future parts require more Amperage or watts. The price is seriously perfect here on Amazon. The power supply retails for 100 bucks on other sites. PROS: -Great price -pci express power at 62A (+12v) -sleeved components with the cables reaching full tower( they arent short cables so it works on an NZXT Phantom and an Antec twelve hundred tower.) Both of which are full towers. -active APF correction -80 plus bronze (Not found often at this price point level with this amount of watts) -750W (More than enough for sli gtx 660's) or in my case, still more than enough for my xfx overclocked 7970, 9 fans, 2 hard drives, fan controller, card reader, blu ray drive, dvd burner, 8gb ram, overclocked cpu and bigger more powerful cpu fan. -power protection -a nice big fan CONS: -its not modular, but at this price, who cares?aha. EDIT: OCTOBER 11th 2012-The first one arrived with a definite loud buzzing so I had to exchange it. It happens with mass electronics and typically just bad luck. Corsair was good about it and the new unit was perfect. DO NOT get stingy when it comes to power supplies. If a 850w power supply is selling for 50 dollars from a random company, you will put your other parts at risk. This one offers Over-voltage and over-power protection, under-voltage protection, and short circuit protection provide maximum safety to your critical system components. It is also rated at 80 plus BRONZE. Which is excellent for the price. At this price range you mainly see psu's with just 80 plus certification. This one is one step higher. Lastly, the card offers 0.99 Active Power Factor Correction provides clean and reliable power. (APF) for short. Another thing that is not found at this price range. Top this with a 3 year warranty and bam, solid computer. Don't let a cheap power supply kill your whole system, with this excellent brand, only the power supply will die if it eventually happens. A cheap psu will more than likely take it, along with all your expensive components. For reference, here are my specs> -Processor: intel ivy bridge i5 3570k @3.5ghz -CPU Cooler, at the moment: standard intel one. getting: thermal take frio OCK -Video Card: XFX Double D Radeon HD 7970 -Memory: 8gb Patriot intel extreme series ram @1600 -Hard Drive: 500gb Seagate drive -Case: Thermaltake Msi Snow edition mid tower -Power Supply: Corsair Builder Series CX 750 Watt -Fans: 4x Coolermaster 120mm fans -Motherboard: AsRock Pro 4 H77 mATX FOLLOW UP EDIT December 2nd 2013: ***Sorry for the wrong date here. I meant December 2nd**** The power supply is still going very strong. The system it is now powering involves additional lights, watercooling, another drive, and a max overclock on the card. The cable sleeving on the 24 pin board power has become rigid and a ripping in areas. However, with a few cable ties it isn't so bad. Last edit: I've noticed amazon just updates product links with old things, the current cx750 is vastly different from the original one I'd purchased 4 years ago. Like with all reviews, take this with a grain of salt as it was written in a time where this power supply was a lot more expensive and before evga even began making power supplies as well as other companies stepped up their quality. For anyone seeing this now in 2016 and beyond, I'd recommend EVGA SuperNOVA 750 P2, 80+ PLATINUM 750W , Fully Modular , EVGA ECO Mode, 10 Year Warranty , Includes FREE Power On Self Tester, Power Supply 220-P2-0750-X1 and though it's twice as much, it has been well received by builders and reviewers. When looking for a power supply, I'd also suggest checking review sites such as jonnyguru where they tear down the power supplies and review things such as individual parts quality, real world testing, temperature figures, and give power supplies ratings based on these criteria.