Summary: my other cx600 I got only 1 year ago had no such problems. and the ax850 was great as well. I will keep using it for now but beware there may be a better set of cables out there for your money.
Pros: I have 2 of these now and a 850W corsair AX series from 2011. they all still work. this psu is quiet and looks nice fan only kicks on high gear when really loading it. The physical PSU is great my problem is with the cables.
Cons: I had major issues connecting the wires to the motherboard and getting them to actually connect. The 24 pin required me to push each wire into its plastic housing in order to make them go down enough to start the computer. it took about 5 attempts doing this before it finally worked and booted th...
Cons: So as another reviewer said, the corsair rebate is for CP-9020048-NA and my unit is a CP-9020048-US. This "US" version is different than the rebate form and says not valid when trying to enter online. Going to call newegg and see what is what but will mail back if cant use rebate.
Summary: I would say buy brand x instead of corsair but all of this stuff is made in china with bottom dollar parts, labor and production processes. These psu's are probably made by the same one or 2 companies. now so it probably does not matter much, just pickup what ever has the best warranty.
Pros: Nice while it worked
Cons: Fails overtime in spectacular fashion PSU ran fine for a few years and then one day under load it overheats, i hear snap, crackle and pop. Destroyed my motherboard, in the process of figuring out what still works.
Summary: Works great. The noise level is low and it runs my old quad core like a champ. Corsair keeps telling me the rebate isn't valid in the U.S. (20 bucks gone...) I am going to try to get Newegg to help me resolve the rebate issue as I haven't had this issue with corsair prior to this.
Pros: Supplies more than enough power to my Phenom II and mid lvl. video card. Runs a lot quieter than my old PSU. Before it sounded like the computer was going to blow itself up. The single 12V rail at 46A.
Cons: None yet. Would not suggest this for SLI or crossfire. (Get an 850+) Rebate seems to be a dud.