KINGWIN Lazer Platinum Series LZP-550 550W ATX 12V v2.2 / EPS 12V v2.91 / SSI EPS 12V v2.92 SLI Ready CrossFire Ready 80 PLUS PLATINUM Certified Modular Active PFC Power Supply

Pros: More than enough juice at extremely high efficiency, and super quiet -- I've had this running for a few months now and I don't think the fan has had to spin up once. Modular cables with a universal connector.

Cons: Not all the cables are modular -- not really a big deal though, since I used all the ones that are fixed.

Pros: Quiet, mostly modular. Cables long enough to wind them around prettymuch everywhere in my case. Puts the power through. Almost 2 years running perfect.

Cons: Space on one line for SATA power sometimes a touch short for what I want to do. But then not everyone wants to put their CD/DVD on the same rail as a HDD. Maybe I shouldn't be so stupid as to put my DVD on the top bay.... Probably not a big deal to most. Just a nit pick that doesn't even bother me.

hey, it said "cons" didn't it?

Other Thoughts: Don't have the equipment to really find out how the rails are doing individually. I can say that it's been very stable for me through thick and thin. Can't say off hand if it improved my power bill. Stuffed this into a new box and just wanted to get something that's high quality. Most of my other psu's that I've gotten have lasted about this long and then died (poor magic blue smoke escaped, sometimes with a pop). This one is still happily running.

Things in my box that this PSU has to push along:
i5-2400 prettymuch left at highest multiplier all the time.
Only have 1x 120mm fan hooked onto my CPU cooler.
24 GB DDR3 1600 (2x 8 GB gskill and 2x 4 GB also gskill @ 9-9-9-21 timings, not overclocked)
ASRock P67 EXTREME4 (B3)
GTX 560ti default clock 850 (evga card) Occasionally pushed up over 900 Mhz (hope to upgrade to GTX 670, may update if this happens. Power draw seems to be the same if reviews are to be believed.)
3 HDD (WD black 2 TB, 750 and older 500) and 1 SSD (OCZ vertex 3 120 GB)
Standard DVD/CD burn 24x combo drive.
Logitec G500 mouse (I mention this because the power has to be pulled through the mobo.)
And a keyboard that I forgot the make and model that has red backlight. (Forgive me, writing this while I'm not at home to look)
Antec 300 case w/ 4 120mm fans (came with 3, bought 4th) and the 140mm. Mostly kept at medium speeds since my ears have apparently gotten sensitive about that in my old age.

Pros: I have owned it for 5 months now. There has been no single issue.

Cons: none.

Pros: Quiet, efficient, long cables

Cons: Shuts off when trying to wake computer from sleep.

Other Thoughts: I found the following about Kingwin Lazer PSUs at xbitlabs: "Although the standby source is rated for a high current, it is really inferior to most opponents with lower current ratings. This drawback can show up in systems with huge amounts of system memory (it is powered by the standby source in Suspend-to-RAM mode) or with a large number of devices powered by USB in sleep mode . . ."

Pros: - Reliable, quiet, cool, modular

Cons: I have had zero issues with this PSU. Couldn't criticize it if I tried.

Pros: Quiet, efficient, powerful.

Cons: None so far.

Other Thoughts: Used this is a Monual 312B case entertainment computer. It's totally overkill for the system but I wanted it that way so the fan wouldn't be necessary, and the Platinum rating keeps it efficient even at the low end of its capability. Power consumption on the Kill-a-Watt with the hard drive spun down and the i5-2405S in idle is 45W or less, kicks up a few watts more when watching videos. I've yet to hear the PS fan come on even when running Handbrake, but I don't do gaming so can't speak for that.

Pros: This hard drive delivers where it counts and I highly recommend it for anyone who has a bottom mounted PSU with the air intake coming from outside the case.

As a closed loop the fan has never kicked on in my core i5-750 rig with a gigabyte GTX 460 under any load I can provide.

The modular cable system that enables any cable to be plugged into any slot is a vast improvement over my last modular PSU (OCZ) which required specific cables be plugged in specific places.

The cables were long enough that I could run them behind my motherboard tray in a CM Storm Scout case, my OCZ cables were slightly too short.

Over all with this PSU I am able to use 2 fewer cables than I had to before which is wonderful.

The goal of my PC is to be as silent as possible under low load like browsing the web or watching videos, and then stay fairly quiet under gaming and this power supply is perfect for that.
The loudest thing in my case is now my CPU fan - a Noctua p14, which I can barely

Cons: Cons.. Well I dislike that the PCI-E cables are not modular and I dislike that I can't see that beautiful white fan...

Luckily for me I have to use both PCI-E Cables so I would have had them plugged in anyway.

Also a very very minor con - PSU's maximal efficiency is at 50% load so ideally this would be a 600w PSU given that my gaming load is around 300 watts.

Either way the efficiency is so high throughout the entire load range there isn't anything really to worry about.

Other Thoughts: Wish I could make it turn its fan on!

Pros: Awesome PSU, cut my power usage by 20% over my 80+ PSU I had. my i5 ivy bridge system uses a whole 40 watts idle now. Was using 55 watts idle with the old Corsair 80+ PSU I had on previously

Cons: Not 100% modular, but that is fine

Pros: Solid design, no coil whine, quiet fan (in a not so quiet case/environment), switch to keep the fan always on (for those paranoid that it isn't working)

Cons: None

Pros: -Plenty of power in the age of 28nm graphics cards and 22nm processors
-Apparently uber efficient (I have no way of testing this but less money to the power company means more games for me)
-I've yet to hear it

Cons: -not 100% modular

Other Thoughts: build:
Intel Xeon E3-1230 V2
XFX Double D Radeon HD 7970
ECS Elitegroup LGA 1155 Intel H77
Intel 520 Series Cherryville
8GB DDR3 G.SKILL Ripjaws
Kingwin Platinum 550W PSU
Corsair Obsidian 650D
Dell Ultrasharp 24" IPS Panel
ASUS Xonar Essence STX
Beyredynamic DT 770 Pro