Seasonic Flagship PRIME 600 Titanium Fanless SSR-600TL 600W 80+ Titanium Full Modular ATX12V & EPS12V 12 Years Warranty Super Quiet Power Supply

Pros: Silent and low heat efficient and great for power saving long 12 years of warranty

Cons: PCIE power cords for the gpu are little too short for the second one Power cables are not premium quality

Overall Review: I got two version of this power supply one is rev. A1 with 2 big brown capacitors and other one just regular with no rev designated but has 2 big blue capacitors, I have been using both for few months but I recently found the one with blue capacitors, you are not able to turn back on the computer after shutdown for couple mins, you would like to wait for the PSU for like 15 mins, then it would work. Also after the power outage you computer does not turn itself back on(with motherboard bios set to power back on automatically after power comes back). If you are lucky you get rev A1 with brown capacitors, you would have no problems. I have about 6 of the PSU with blue capacitors they are all doing the same.

Pros: Unloaded voltages look good. Will update review after I get more experience with it.

Cons: None yet, but see other comments below. Also, after 2 mobos I have yet to get my Asrock Taichi to POST with an i9-900k CPU and this PSU. I'm hoping it's not a PSU problem. But I wanted to post this review anyway to express my comments below and will edit the above once/if my system becomes operational.

Overall Review: This product is optimized for low noise design, right? So it will probably be put into cases also optimized for low noise, right? However, there aren't many suitable cases out there. It is critical to have good case airflow for this unit since it has no fan to force airflow. The installation must naturally allow for the PSU's hot air to rise out of its perforated top. Even at 95% efficiency, it's still dissipating 30W when delivering 600W, which can get quite warm. Some considerations are: 1) PSU bottom: This PSU has a solid bottom. When mounted in a case bottom, bottom case fans / vents are not helpful. When mounted in a case top, the top of the case shouldn't be solid but must allow air to escape. Plan for this when picking your case. 2) PSU sides: Most of the hot air escapes out the top. Since the bottom is solid, this air must enter from the sides. If the case is narrow it'll block airflow thru the sides of this PSU. OK, no problem. Get a big, wide case. But the best quiet cases seem to be using PSU shrouds now. This greatly restricts airflow thru the sides. I highly recommend finding a silent case with no shroud. Usually this means picking a previous generation model. 3) PSU top: This is where the hot air escapes. It is critical to not block this. Look at those shrouds. Many are solid while others block the airflow by 50% or so. Bad, bad. 4) When mounting case fans, try to use a location where the air intake will blow toward the PSU. In a bottom mount, put a fan blowing in at the bottom. In a top mount, put the fan blowing in at the top. Summary, this PSU appears to be great. It's up the case manufacturers to design cases to allow for proper air flow to/from this passive PSU. I wanted to use the Fractal R6 but its shroud is not removable and will block the airflow to much. I ended up using the Fractal R5 which is working great (although I had to give up a USB-C front panel).

Pros: Dead Silent Modular Cable Management Accessories in the Box Amazing Online Reviews Titanium Efficiency - The rest of my case component are cooler Runs an i9-9900k, 32GB memory and 1080ti with no issues

Cons: Luxury Price Point

Overall Review: I've always been a major fan of silence in my rig as much as possible. Got all Noctua and Silent Wings fans all around, AIO cooler, fans curves set low, etc. Still there were faint "wuh-wuh-wuh-wuh" sounds that would emanate from my computer that sort of drove me nuts. What is it? AIO pump? Are the fans not tuned correctly? It can't be the PSU, could it? Everyone says they barely make noise, plus mine as a well-reviewed EVGA GS series with eco-mode so the fan shouldn't even be on most of the time. Oh well, I lived with it. Fast forward to me getting a new job that paid decently so I splurged on a new CPU, mobo and memory, might as well splurge on a new PSU and be absolutely certain that component is responsible for NO noise. Plus the in-depth reviews online have sung its praises about being one of the best PSU's money can buy, so I figured with a 12-year warranty I might as well be certain I have the Cadillac of PSU's locked down for at least the next decade and went for it. I love this thing. Dead silent, the previous noise coming from the case is now gone, so the previous noise *was* the old PSU after all. This thing runs a i9-9900k and 1080ti with 32GB of RAM, several fans and SSD/HDD's with no problem. And my case is overall cooler according to all the readings I see.

Pros: I am really impressed with this power supply At first I was a bit skeptical that it could run properly without a fan but I knew if I had any issues newegg would stand behind it. I am completely blown away by this thing. It seems to produce very little heat at all (probably thanks to the fact it is titanium rated) It is perfect

Cons: Not really a con but 600w could be a little light if you want to run sli or crossfire. Just something to keep in mind. I only have a single geforce 970 in this build. According to seasonics psu configurator I have about 100w of headroom.

Overall Review: I am done playing power supply roulette with random manufactures. I only buy seasonic now, I skimp elsewhere. This power supply is perfect for a silent gaming pc in your bedroom or a dead quiet media center pc. For other applications you would get a lot better value for your money going with a traditional model with a fan.

Pros: Silent. Works. Saves me $ on power.

Cons: None so far. I've been a little concerned about the hypothetical future where I purchase an top of the line video card that sucks up all the power when I mine bitcoins... but so far I haven't crossed that chasm.

Overall Review: Works well. Fit in the case no problem. I've been using it for >1year now. Tempted to buy another one since it pays for itself compared with a bronze PSU.

Pros: - Powerful, 600W is not a joke for a fanless PSU - 12 years warranty - Packaging is premium - Does not contain any lights, leds etc. - Silent

Overall Review: I love silent computing. For years, I have been using fanless HD-Plex cases with i7 CPUs. Recently my requirements changed, and now need a more powerful workstation. So, I upgraded to Ryzen 9 3950x, and obviously a fanless case would not work for me anymore. While I will have some fans in my new workstation by not having one in PSU I will still able to reduce the total amount of noise.

Pros: -Completely silent! -12 year warranty that speaks to the manufacturer's confidence in their own product -Luxury extras, such as: Felt drawstring storage bags for the unit and cables, and a tester plug -Highest review of any fanless power supply on HardOCP in terms of build quality and electrical regulation tolerances -Highest wattage of any fanless power supply on the market currently

Cons: None really.

Overall Review: I highly recommend this power supply. I couldn't list price as a con because I believe value is a more appropriate measure. The quality, peace of mind, and SILENCE of this unit, at this power rating, justifies the cost. There's another factor I didn't list as a con because to me it's more of a benefit, but it's worth a mention: this unit doesn't have any software control or temperature monitoring features. I consider the extra complexity of such a system to be a liability, in terms of extra electronic components required which compete for cooling (or block air flow) in a fanless unit, or that may fail one day in the future, or for the software to become outdated and unusable. Most people probably just look for enough wattage to do what they need and call it a day. I read many detailed reviews on various sites covering specifics of what makes a good power supply. This is the best 600W solution available.

Pros: Fanless 80+Titanium efficiency Long 12 year warranty

Cons: Only 2 SATA power cables. I would have happily gave up the 2 Molex cables for another SATA cable.

Overall Review: This is probably the best power supply you can buy. It's quiet and efficient, well worth the extra price. It relies on convection cooling (heat rising through the perforated top) so I wasn't sure if it needed a case that didn't have an enclosed PSU shroud. I played it safe and got a Phanteks Pro M with a perforated shroud just in case. Anyhow, the unit has performed flawlessly.