PC Power & Cooling ZT Series 550 Watt (550W) 80+ Bronze Fully-Modular Active PFC Performance Grade ATX PC Power Supply 5 Year Warranty OCZ-ZT550W

This PSU is completely modular to include the 24 pin connector, SATA, Molex, CPU, and PCI-E connectors. All of the cables are sleeved nicely and included is a nylon storage case for unused cables.The unit is quiet, produces Gold Rated power and is well made. If you are planning on a 2 CPU 2 GPU set up and have a large case there may be a couple of things you want to order with this product. With two GPU's and a motherboard that is going to require multiple PCI-E connections for GPU power, you will run out of outlets on the power supply. I am running an EVGA SR2 motherboard with 2 GPU's in SLI. The SR2 requires 3 PCI-E connections to power the SLI configuration and in this configuration you will end up one outlet short. If this is the case order two 8 pin to 2xPCI-E 8 pin Y cables and you will be in good shape length and connection wise. If you have a large case you may want to order extensions for the CPU connections. OCZ could make their cables 2 inches longer and it would solve the length issue. I have seen some negative comments about OCZ power supplies but as far as I am concerned there is no issue and I would purchase this product again.

I bought this power supply for sufficient power to run a 2 way SLI surround setup with 2 EVGA GTX 570 HD 2.5GB cards. It might be just a little bit overkill, but I figured better safe than sorry. The fact that it is 100% modular is nice. It came with a bag for the left over wires, and OCZ branded velcro wire ties which is a nice addition. It also came with finger-screws for quick and easy removal/installation so the hardest part about putting it in will be removing your old PSU :). As far as operation, I haven't done any official analysis but it runs my setup fine. There are 6x 12v video card power outputs so even if I wanted to add a 3rd card I could. The only negative thing I noticed about this PSU was its smell. Pulling it out of the box I immediately noticed the typical smell of burned in electronics, but more potent than other PSUs I've owned. I'm assuming it is due to the higher wattage rating of the components. In any case, it works and I can't smell it now that it's installed and running. The price was good for the power range and its my second OCZ--never had a problem with my 600W ModXtreme either. I'd recommend this PSU.

This is a great power supply for any gaming rig or any computer that is used for extensive video editing. As this power supply is fully modular, you only need to use the cables that you need, and the others can stay in the little draw string bag that the power supply comes in. As this power supply is 80 plus bronze certified, it will work smoothly for anything that you need it to do. This power supply is a little on the long side, but is not to thick. This power supply is very quite even under a lot of stress. You need to be really trying to hear it to be able to hear it loud and clear. The cables that come with it have a black mesh around them that protect the wires, but does make them a little stiffer and harder to bend, but not to hard. Make sure your case has good air flow, as this power supply has a fan on the top, not on the side. Another down side is this power supply only has two PCI-E connectors for a graphics card, and I have a EVGA GeForce GTX760 super clocked graphics card with two gigabytes of DDR5 ram, so the one card takes up both the six pin and the eight pin. But every rig is different so I am not going to dock a star for that. Over all, this power supply is great for anyone on a budget that is looking for something great but inexpensive.

This is an excellent power supply. There is an abundance of length on the cables, and there are a lot of them. It is silent... I think. My system is not the quietest, but I do not hear the PSU at all. There is a little bit of extra length, but that is to be expected with a 1K Watt. All in all I highly recommend this power supply. I was able to snag it for 170, so I would wait for it to go on sale again. Though it is still worth the list price.

I have owned this PSU for 1 month now and I have nothing but good things to say about it. The Voltages are spot on. What's bad to say about 850 usable watts? No amps tied up in the +5v or +3v. Just 70 fully usable amps on a single 12v rail. When I purchased this, it was one of the cheapest PSUs in its class. As far as I can tell, it performs on par or above. I can't speak of longevity just yet but if it dies on me, you'll hear about it.I have to admit the EPS cable is a bit on the short side. I have a Cooler Master SGC-6000-KXN1-GP Storm Sniper ATX Mid Tower Gaming Case (Black) with a bottom PSU mount. It just barely reaches and there's little to no slack when run behind the motherboard. If you have a full tower case you'll be buying an extension. If you have a mid tower case, I would imagine it would reach.I think fully modular is more of a gimmick. Who's not going to use the 24 pin or 8 pin cable? You'll probably even use 1 molex, 1 sata and a PCI Express cable? Chances are, if you're looking into a PSU this powerful and efficient, you'll use at least 1 of each type. Even so, it gives it "cool" points.It's a great PSU and if you have the need for 850 watts and have the budget for it, buy it.