Pros: Every connector you could ever need. VERY quiet fan. I'm running 2 HDD's, a dual core processor, PCI video card, a few case fans, and 2 DVD-R drives without any issue (as would be expected). One of my buddies referred me to Johnny Guru who gives a top-notch appraisal of this unit:

Cons: I didn't suck it up and buy a good power supply years ago.

Overall Review: I must have bought no less than 7 or 8 cheap power supplies in the last decade. Every time one went out, I rushed down to <insert generic computer parts store compatible with newegg's review policy> to buy the budget $30 everyday low price, everyday low quality power supply. This time when the original power supply that came with the case died on me, I thought I'd see what the expensive power supplies were all about. My conclusion: "they're worth it."

Pros: Excellent build quality. Components, case, cables, and even the resail packaging are all top notch.

Cons: I wish there was a connection to monitor fan speed, but this is minor. Also would like modular cables, but also not a big deal.

Overall Review: No problems running with an Intel Q6600, 8800 GT graphics, 2 hard drives in a striped RAID, and a CD/DVD drive.

Pros: The power supply is fine. Comes with plenty of cables, very lengthy, everything you could need. See the CONS for the big problem with this power supply.

Cons: Every single 550VX has a buzzing fan. Yes, all of them. Check the Corsair forums. Some people have gone through four or five of these units (RMA'ing) and every single time the PSU fan makes a buzzing noise. Do not buy this PSU if the noise will bother you!

Overall Review: Corsair insists all of their PSU's are top quality. Which is true for *some* of their units. But the 550VX is just a huge mistake.

Pros: Plenty of cables, HIGH efficiency, simple color design (as in, it wont burn your eyes with 200 LEDs), super-quiet fan

Cons: Not modular, but you'd have to pay a LOT more for that in a PSU of this quality

Overall Review: Ran a Q6600, 8800GT, and 4GB of DDR2 RAM with no problems at all.

Pros: -It's heavy (lots of transistors) -Stable -Lots of amps in the 12v rail -SLI/Crossfire compatible with 2 PCI-E connectors -Quiet -Great efficiency (between 82-85%) -Stylish -lots of connectors -great price for its specs -long cords -round cords; nice sleeves

Cons: -It's heavy (which is good for power and stability, but is somewhat difficult to position in the case) -Not sure if it's the fault of the PSU or of my 8800GT, but the PCI-E connector doesn't seem to fit perfectly into the video card. In other words, it seems too easy to pull out the power from the card; in fact I accidentally booted my system once with the power disconnected from the card, and I got a loud beeping error sound (thank goodness), so I quickly booted off and fixed the problem. -SO MANY CORDS! If you don't have many components, then you don't need such a versatile power supply like this. Nor do you need that much power. But if you have a lot of accessories and drives and cards, then this is the PSU for you. -Cords are too long in a small case

Overall Review: Looks awesome and meshes well with a black case. This is a very cost-efficient PSU for a middle-to-upper end system. Highly recommended.

Pros: Sturdy and well built, fans are ultra quiet (I actually had to take a flash light and look at the fans to make sure they were running)! Has very long, meshed cables, which are perfect for the case it's in.

Cons: I have seen none so far, it's handling all workloads I give it just fine.

Overall Review: I have an older PC running a Tyan Tiger motherboard and dual AMD MP 1900+ (1.62ghz) processors, in an old Antec server case (hence the need for long cables). This thing is loaded with hard drives and DVD burners, and tons of fans (makes for a very loud computer). In the past, this thing has chewed up and spit out almost every PSU that has ever been in it (except the 1 PC Power and Cooling I had in it, but that went into another build a long time ago), so it's been hard to find a good PSU for this computer. This computer's role changes daily: it's my backup rendering box, video and audio encoder, network storage, and many other things - a pure workhorse. It had been down for a long time, and I finally needed it again. Because I couldn't afford a $200+ PSU for an 8 yr old box, I went with this Cosair, since it was a good price and highly rated. Never owned one of theirs before, but after running for 6 months and still going, I'm convinced. Now, I trust two PSU manufacturers.

Pros: Very solid unit. Nice large fan, quite, and plenty of connections. All cables are fully sleeved.

Cons: Cables are a bit too long for my case. Cabling is always an annoyance though. You can't make a PSU that has just the right amount of cables with all the cases on the market.

Overall Review: It would be nice if they had a modular unit like this. Also, I wish the voltage sticker wasn't on top of the unit. If I forget what I've got on it in the future I'll have to remove the PSU to find out.

Pros: Whisper quiet. Plenty of connections. 80+ certified! Comes with a nice bag in case you have some extra parts or anything laying around that you want to put in it after you unwrap the PSU.

Cons: NONE