CORSAIR RMx Series RM750x CP-9020179-NA 750W ATX12V / EPS12V 80 PLUS GOLD Certified Full Modular Power Supply

Pros: Fully Modular - This really helps on air flow and work space. No reason to buy non-modular PSU anymore, when the price points have fallen so much. Stable - Even at max power output, the PSU had not issues with support or heat. Temps never went above 50C. 12V rail remained stable with only 6% in fluctuations in voltage regulation, along with all other minor rails coming in at 5%. Very Quiet - Even at full output, the unit was far quieter than the rest of the computer. Warranty - 10 years, which is what a good quality PSU should have no days. Zero RPM Mode - A must have on PSU. Fan only engaged when peak needs hits about 60%. Fan didn't need to kick on for most of the day. Capacitors - Japanese!!! No lower-end capacitors from Taiwan or China, only the best on this model. Compact Build Size - Size allows it to fit in min-ATX and up to full without an issue. 80 Plus Gold Certified - Should be for the price point. POWER - Running a Kaby Lake CPU at 4.7Ghz, two GPU's, six drives, liquid cooling and 8 fans without an issue!!! Plenty of Cable - Corsair was kind enough to include more cables than most anyone would ever need.

Cons: Single 12V rail - Most PSU above $100 now have two rails to use to spread the load demands. Price - Unit is higher than similar models that have more than one 12V rail. Cables - Very stiff and have trouble flexing. Can cause air flow issues.

Overall Review: The PSU is a decently priced unit that has an excellent design and build quality. Are there other units out there that do the same for cheaper? Yes, but not ones with a 10 year warranty. Unit had no issues in two weeks of use and benchmark testing. Buy this unit if you want a PSU that will last the next 10 years+, keeping power stable and reducing the risk of damage your computer.

Pros: * Over 62A on a single 12V rail. Plenty of power, and a single rail ensures greater stability. * Lots of extras in the packaging. Includes a carry bag for PSU, screws, and plenty of foam. These aren't things that everyone will really care about, but it's nice to see Corsair go the extra mile for their customers. It's appreciated. * Extremely quiet. I struggled to get the fan to actually turn on with my 8700K and 980 Ti. Probably the quietest PSU I've ever tested, however my gaming rig in general is pretty loud, so it's difficult to properly measure the noise levels. Corsair markets an "optimized" fan curve for silence so this seems to be the result. Job well done. * Impressive 10-year warranty. One of my favorite trends in recent years is how PSU manufacturers are getting so much more competitive with their warranty lengths. We're reaching a point where 10+ years is becoming more common and it's fantastic that we're able to buy units and keep them virtually forever. I have an 11-year-old Corsair HX620 that I bought in 2007 that is still running! * Compact? ATX spec for PSU length is 150mm -- the RM750x is 160mm. So while Corsair advertises this as "compact", it's actually larger than the standardized ATX spec. Is it smaller than other units in the same category? Yes, absolutely. Is it a 'small' PSU? Not really.

Cons: * Single 4+4 pin CPU power. This is a problem if you plan to run any 8+4 motherboard, which several HEDT chipsets use, and several Ryzen boards. I'm actually shocked they didn't include the extra connectors. In my mind this is a massive flaw, since it prevents you from using A LOT of high-end boards! Some engineer at Corsair is reading this right now and saying "See, I told you so!" I'm with you, non-specific engineer, I'm with you. Looking at the unit's plugs, you might be able to request a 2nd 4+4 cable from Corsair. I'm not sure if that will actually work in the RM750x, unfortunately. * No ECO switch. By default, the RM750x will rarely run its fan. This is great! However, most PSUs with fanless modes include a switch on the unit to toggle between "ECO" and "Normal" modes, effectively disabling the zero-RPM modes (the fan runs all the time). Some people with poor ventilation, or those who don't care about noise, prefer this since it keeps the PSU at lower temps. This might be deemed 'unnecessary' these days, but I never like seeing features removed from PC components. * Ribbon cables are annoying. So I'm not going to mark against the RM750x for this, I just don't like them. They're stiff and unmalleable. I love seeing modern PSUs switching over to braided/cloth designs especially on premium units like this one! Some of the thicker cables (20+4, CPU, PCI-E, etc) do use a large braided cable which is pretty much standard.

Overall Review: All things considered, this is a great value Gold 750W unit its in price range. According to the Orion PSU DB, this unit is Channel Well Technology OEM. Personally, I wish Corsair would use more Seasonic OEMs like they used to. Some of us notice these things, Corsair! The RM750x performed amazingly during my testing, so it's definitely a high quality unit. The RM750x has a great reputation and this new revision certainly keeps that tradition. There are now at least two models of RM750x. The unit tested here is the CP-9020179-NA, the newest (2018) model. I'm taking off an egg for the missing ECO switch and the CPU power cable (mentioned in the Cons). A perfect power supply has those features. Otherwise, I absolutely love this unit. Just make sure it'll actually has enough EPS (CPU) power connectors for your motherboard, and plan accordingly.

Pros: - Fully Modular - ample cables of good length - connectors, wires and braided sleeves are all black and of quality construction – They blend right into my case. There is a bag of little black zip ties. I use them. I have plenty anyway, but - Nearly silent – When the fan is running – My case fans are louder anyway - Corsair is a trustworthy brand with a good (10-year) warranty and return/repair handling - The Gold rating is nice, but not really a big factor for me - The price is right for a fully modular PS, especially if it has the quality to last 10 years or longer - It looks good, smells good (like all new electronics) and is packaged intelligently

Cons: - The included manual has sections in 10 languages and is for 5 different tiers of this product. How about save a tree and provide a postcard with a URL and a QR code?

Overall Review: Out of all the failures I have had, the PS is the most frequent, followed by hard drives, Logitech wireless mice and un-maintained water cooling systems. You never know when they are going to fail. I personally have never had a PS fail on day 1, but I have seen anywhere from 1 month to 2 years. The ones I have seen go, go up in flames!... well at least sparks and burny smells. I always worry it might burn the house down if I am not there, and usually I am not. Some have just degraded to the point of causing strange behavior – which is really hard to troubleshoot. The few I have diagnosed turned out to be due to capacitors, usually bulging, but sometimes exploded. If this model’s “Japanese capacitors” are truly better, then I will be happy. If any PS makes it beyond two years in your exact same rig, you are probably good to go for a very long time. Since I don’t like down time, my approach to sizing the PS is to ensure my most likely point of failure can handle the peak load without breaking a sweat. That means not driving the whole or any components anywhere close to their limits. That is why I add +50% to +100% capacity to my calculated power draw to size the PS. Yes, that is right – double the capacity! Everything runs cool, quiet, more efficiently and in the mid-range of each components electrical and temperature specifications. This might cost you an extra $30 - $100 (maybe more on the super high end), but you will make some of that up in efficiency, come out way ahead when you don’t have to suffer down time and heaven forbid the rare case of burning the house down. 750W should be plenty for your average gaming rig with one decent video card. There are two PCIe cables, each with two connectors. Probably more cable than needed. Based on what I just laid out, driving multiple high-end video cards will likely lead to early failure of any 750W supply. Who knows, maybe this one is different. I gave it 4 eggs only because it has only been installed for 3 weeks. I will upgrade to 5 if it makes it to a year. Update (3/25/19) - Still working great. No complaints.

Pros: The 750x (like every Corsair PSU I have purchased) is packed very well, with a lot of extras. The unit itself is covered by a soft bag and surrounded by foam. I have a few of those bags now that I use for all sorts of things. The cables are packed in another bag that is also reusable. The unit itself was noticeably smaller than the 1000w unit it was replacing, giving me extra space for cable management. The modular cables worked well, leaving me with a clean, open interior. There were plenty of cables for a standard setup: full tower with a single GPU, 4 HDDs, and a few fans. The installation was just like any other PSU. Nothing fancy, everything just fit into place. The PC I’m running with this power supply isn’t anything fancy. The 1000w unit it had was overkill, and the 750w likely won’t ever see a full load. Everything powered up properly the first time. I have not had a single issue with it so far.

Cons: (Most of these negative points are directly related to the price of this unit. PSUs that “fix” these problems are more expensive, so in that light these might not be considered cons). I wouldn’t consider this PSU noisy, but it’s not quiet either. It uses a rifle bearing fan, which can’t quite match the FDB fans in more expensive units. No fan test button. It includes zip ties, which encourages people to use zip ties. Stop it. Well, unless you use the re-usable zip ties. I recommend Velcro instead.

Overall Review: It’s a good power supply for the price. If you need a basic unit that will get the job done with no frills, this is for you. It has a good warranty as well. It’s not perfect, but a 4 seems too low, so I gave it a 5.

Pros: So much to list here, Packaging: Your PSU is getting to you safely; tough foam and a nice velvet bag protect it from harm Bag for your cables, zip ties, screws Plenty of cables for a pretty beefy build Enough PCI-e power cables to run SLI/Crossfire Operation: Gold rated 750 watts 62.5A 12v Nippon Chemi-Con Caps are top quality and what I look for before considering PSUs Super silent cooling fan, almost never turns on for me Small power switch and power input so you get the maximum amount of exhaust vents Heavy thick-gauge power cord Flush housing of the modular power connectors Looks: Labels on the connectors are oriented for the PSU to be run with the fan facing down Neutral coloring so it will look sharp with many different types builds Matte Black finish is clean, doesn't attract finger prints Looks classy in a windowed case Corsair’s reputation and 10 year warranty. (Can't state how important this is in a Power Supply Manufacturer)

Cons: Only con I can think of with this PSU is the thick 24 pin connector was hard to route behind the Motherboard tray

Overall Review: I have owned a few Corsair Power Supplies and I have never been disappointed They last forever which is why they can back them up with a 10 year warranty Because of this fact they seem to have a very good resell value PC SPECS: ASUS Gryphon z97 mATX Cooler Master MasterBox Lite 3.1 TG Intel 4790k @ 4.7GHZ Arctic Cooler A13 16 GB Samsung @ 2400 MHZ Corsair RM 750x 2x 3TB Western Digital Green drives 128 Samsung 860 EVO MSI GTX 1060 6gb

Pros: Out of the box this supply looks very good. It is fully modular, with a variety of connectors, including multiple PCI-E GPU connectors and two 8-Pin CPU power connectors. It appears to be well built all around. The internals look beefy and the capacitors I can see are all known good brands. The Cables are all of a good length and the larger bundles are sleeved, while the drive and accessory power cables are the ribbon style. The unit runs cool and quiet even when the fan is running. The warranty is an amazing 10 years. The unit is the size of a normal ATX supply from what I can see, so that 750 watts is packed into a nice small package. The modular cables allow you to only use what you need leading to very clean looking and easy to service builds. The pouch it is shipped with to keep the spare cables in is a bonus as well.

Cons: The heat-shrunk sections of the 24 pin cable are a bit bulky and hard to work with, I wish they were a bit smaller and more flexible. I have a similar issue with the double headed GPU power cables, I have a preference to have 1 cable per GPU power connection, so I find myself having to deal with the second connector adding bulk to my runs, and usually having to creatively tie it out of the way. I would prefer more cables over having one cable with multiple connectors for the components that are heavy loads. The only other thing I could ask for is maybe a switch to set the minimum fan speed to allow the fan to run all the time or to allow the 0% speed quiet mode.

Overall Review: I did not knock any eggs off my review for the cons section since a lot of that is my personal preference, and I am more or less offering them up as suggestions and notes for anyone building with this supply. I was very happy with this supply through all my testing and Corsair has grown more and more over me with the build quality of their supplies. I tested my power supply for 3 weeks on a dual socket server board with a modern GPU and it gave me no issues or hiccups whatsoever, even while running the machine at load for days on end to get benchmarks. I would recommend this supply to anyone building gaming systems, medium servers, or high end desktops. The build quality looking in from the outside looks very good, I see Nichicon and Nippon Chemi-Con capacitors everywhere I can see without opening the unit and, thus, voiding the warranty.

Pros: Is listed at a good price with most retailers. A bit cheaper than some lower quality series. Fully modular. Very nice option for custom builds. Fan stays off when in low temperature ranges and is almost silent up to ~35%. 80 PLUS GOLD certified for good optimized efficiency. All Japanese capacitors. 10 year manufacturer warranty. And Corsair has great customer service.

Cons: Needs to have fan profile options for the end user to set their own fan curve. Fan is fairly loud when operating at >50%. MUCH louder than my Dark Power Pro 11 at any range. Does not include 8+4 EPS/ATX12V power options for modern chipsets.

Overall Review: Though fully modular; the cables included are hard ribbon style. This makes cable management awkward in most builds that i do because it is difficult to twist the cables into position. I much prefer rounded braided sleeves. This is a good reliable power supply from a trusted manufacturer but, there are much nicer PSUs available in the $110-130 range. Just wait for a good sale.

Pros: Efficiency: I used a device to measure the wattage at the wall plug being used by my computer, and a couple of utility programs to measure the wattage used by my components. I had to make a couple of assumptions using Newegg’s “wattage calculator”, but even using conservative assumptions the efficiency of this PSU was around 90% during low load normal operations (web browser) and around 86% during high load operations (gaming), more than earning that 80+ Gold certification. Cable Management: I really like the molex-to-4 pin cable, allowing you to make use of an available on-board fan plug; this prevented the need to add one of the molex cables specifically for the case fans. The flat SATA cables were also a nice perk, which helped thread the cables into the case’s cable-management holes. All this helped make cable management very nice and neat. Noise: After installing this PSU there was a noticeable difference of audible fan noise from my previous one, to the point where I was actually worried that the fan might have been malfunctioning. To test this, I unplugged all my case fans, and then the PSU fan started to kick in. After using it for a little over a month, I’m convinced it’s just that efficient; all of my other component temperatures were constant indicating to issues with heat or air flow. Price: This PSU is competitively priced with other brand names, but what makes this one a much better option than the less expensive units is the warranty: 10 years. Not even all the other brand names have that kind of warranty, and the cheaper ones are either 2 to 5 years. It also came very well packaged, no one need worry about damage to the PSU during shipping.

Cons: There really aren’t any cons in my book… I guess if I had to pick one, the 24 pin MB cable was a little difficult to manage because of how thick it is? But you’ll run into that problem regardless of which PSU you choose.

Overall Review: I recommend plugging all the cables you’ll need into the PSU before mounting it in your case; makes it easier to ensure they’re all fully seated. My case had the PSU mounted in the top.