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This Power Supply does what it is designed for, it powers a computer. I use mine in my computer with an i5, a 4890 and 4GB of Memory, amongst other things, and it powers it without trouble, which was to be expected. It has not failed me yet, and I expect it never will, Power Supplies are supposed to last a long time.
Before buying this, however, you should check that it can power everything you want, unless you are getting a power hungry Graphics card, which is the most power intensive unit, this should do the job.
Provided this Power Supply can power all of your componenets, which as I said above, it should, then it will prove a faultless experience and it is very easy to install.
One minor complaint would be the amount of cables attached to it - there are tons, however this is useful as it provides room for improvement with the ability to add more components.