SilverStone Technology Platinum Certified Single +12V Rail ATX Power Supply, PS-ST55F-PT

If you found this, you probably already know, but this power supply is 80+ Titanium rated. 80+ ratings are about power supply efficiency, and power supply efficiency is a HUGE factor in how much power your computer uses. Titanium is the highest rating and, while it includes slight increases in required inefficiencies at 20%, 50%, and 100% of rated load over Platinum, the second highest rating, it also includes something that no other 80+ category includes: minimum efficiency at 10% load. This is important because your computer likely spends a lot of time at low loads, and the nature of power supply design is that this isn't easy to achieve.So far I've noticed that the supply is quite quiet, and I've loaded it up pretty well and burned it in, so I'm hoping not to experience any early life failures. I don't have the test equipment to verify that it's actually meeting its efficiency targets, but quiet is a pretty good sign that it's not turning a lot of extra power into heat.

Nothing else like this exists. High power output, platinum rated efficiency, and only 140mm length. That's unheard of. I paired this with Silverstone's short cable kit and a Fractal Design Node 304 case. Fit perfectly allowing for maximum length GPUs. This allows me to build a very compact, but not cramped, top end gaming system.This is powering an Asus Maximus VIII Impact, i7 6700k, 16GB of Corsair Vengeance LPX DDR4, an MSI GTX 980 Ti Gaming GPU, and two Samsung SSDs. All within a Fractal Design Node 304.On idle and light load, the fan isn't even on, so it'd dead silent. Under full load, I can't hear it. The GPU is the loudest thing in my system.There are a few technical reviews out there already that show this is a very good PSU. The only negatives they've stated is the 3 year warranty. Most other PSUs from known brands offer closer to a 10 year warranty. This is also rated for operating temperatures of up to 40 C, while most other PSUs from known brands rate closer to 50 C, but I doubt that will matter for most people.

Good buy if you are using it for mining, which if you are looking at this PSU, you probably are. The connectors seem solid and I've been running it for about a month is no issues. 80 Plat is great with efficiency. I like the 8 PCIe 8pin connectors as they give you a lot of flexibility right out of the gate.I saw another review on here where the guy had melted cables. This is because he was powering his GPUs with the peripheral 6pin. Don't do that, its not what the PSU is setup to do. Only use the blue PCIe 8pin plugs for your GPUs. Technically you could use the peripheral 6pin (i guess?), but the peripheral ports aren't setup like pcie power cables are and they use a combination of voltages outside 12v used exclusively by the PCIe pinouts. PCIe 6+2 pinouts use 3x12v connections. Peripheral uses 2x12v, 3.3v and 5v connections. He even mentions "It seems to be always the upper right of the six pin". In a peripheral that is the 3.3v connector, so his GPUs were clearly pulling current from that 3.3v connector as if it was a 12v. The PSU can push out the full power on 12v, but 3.3v would be limited to 82w overall.I don't say this to pick on the guy, but please don't risk a fire just to get a couple more cards on a PSU. Lots of risers come with the sata to PCIe adapter and they are not safe. Don't use peripheral ports to power your GPUs.A safer way to do this is to get PCIe 8pin to 2x6+2 splitters. The 8pin would provide 150w and the 6pin only draws 75w so you can safely use 2x6pin PCIe this way. If you tried to use both 6+2s off the splitter you could have a problem.Outside the PSA, my only ding on this would be the fan. The unit is so efficient that the fan doesn't really come on at all until you are at about 600w. When it does turn on, its low setting sounds like it is about to take off. It isn't that bad overall but just the initial shock of it coming on is a bit much. They could have made it smoother. All that said, if you are mining you should consider having this in it's own room out outside as the GPUs will probably also make a lot of noise.

Pros: It just worked, no problems, or at least none under half load which is about all my 6700k and 980TI seem to be able to sucker it for. I guess the newer CPU and GPU's really are a lot better with power!! Also 100% modular. Nice to not have to clutter what I don't need.Cons: A tad more expensive vs. I'd like to see. The transfer time is lower on it vs. a regular PSU. IE if power flicker etc. the ms between that being noticeable to the running equipment. If you're on a decent backup battery this won't be an issue really but if not means these are more likely to crash the machine in any sort of momentary power issues.One reason these have that flaw is due to the smaller design and thus smaller capacitors. I guess it's a trade off you have to decide on.Overall though it seems to be working well. The fan on mine always run (I though someone said only under load) but FWIW it's silent. I guess now I just hope it last and doesn't take anything with it if it does ever go.