CORSAIR RMx Series, RM750x, 750 Watt, Fully Modular Power Supply, 80+ Gold Certified

First, a quick go through the obvious advantages of this unit, which I knew before getting it (and you probably know too, so skip this if you've really gone over the specs): 1. The modular connectors make assembling your build or modifying it a breeze. You can easily disconnect any and all cables to take whichever part out of your system (in particular, the ATX 24-pin cable and 4-pin CPU cable are only modular in high-end products, and they usually make getting at your motherboard a pain after the initial installation; not here). 2. This PSU's fan is practically silent; it doesn't even kick-in below 300W, and even at full load it's barely audible (Corsair says 22dB, and I can easily believe that). 3. It's power-efficiency is nearly the best you can get (more than 87% at all loads on a 220V input, or 85% on 110V input). 4. Corsair offers a 10 years guarantee, which is great, but then again I never had an issue with a PSU that wasn't a manufacturing defect (so, my experience is that a 1 month warranty is about all you really need). Nevertheless, peace of mind is always appreciated. What I didn't know when I ordered this PSU is how premium its packaging and accessories feel. Everything from the solid box, to the custom cable pouch and a carrying sleeve for the PSU itself, makes unboxing it is a really nice experience. There's not much use in that after you've assembled your PC, except perhaps if you for some reason carry a PSU with you (technicians, or some competitive gamers?), but it will sure add reselling value down the line. Regardless, it was a really nice surprise for its own sake. The only two things I'd like to point out about this unit which aren't raving recommendations are: (i) Its dimensions (18x15x8.6 cm) will make it difficult to work with in a mini ITX build (make sure that your case can accommodate it if you use that form factor), although modular cabling will help somewhat. If you build a standard ATX system, then that's not an issue. (ii) A minor peeve is that all cables are colored black. Undoubtedly some prefer it that way (it makes the 24-pin cable more pleasing to the eye in open/glass-door builds), but I'd have liked some color-coding (maybe on the bottom of the connector, where it wouldn't be visible once assembled) to help me find pin 16 (the one you need to short in order to test the PSU or turn it on when disconnected from a motherboard -- e.g., if you need to bleed a watercooling loop).

Used this PSU and a powered USB adapter (SmartDelux 7 Port Aluminum USB Hub with 4 USB 3.0 Ports) to address some phantom USB and kernel failure issues.where the power supply may have been the culprit. This PC is a 2 y/o Dell XPS 8900. So far so good with my 4GB 1050 card maxed out and my game settings on the highest quality. With the hub, I like that i can get to my usb plugs from where I sit. This PSU is about two inched longer than the Dell stocker and since the modular cables all come out of the end of the unit - distributed evenly across the front instead of coming out as one big cluster from a single point, I needed and inch or more additional clearance at the end of the unit. Had to swap my optical drives around and eliminate the usb and audio ports on the top of the case and it fit snugly just above the motherboard. As someone else noted, the modular cables are almost 2x longer than are needed for this smallish mid size case and were really hard to get tucked away cleanly without putting a load on the connectors. It's a stock case with an extra fan in the side, so no one sees them and... function before beauty. Great product though and has eliminated crashing during intense game play. Packaging and instructions are great and the product looks well built.

Great PSU as always from Corsair. Mild warning however. In a move for even greater efficiency, these PSU's feature fans that actually turn off completely when the PSU is at low load. This is generally good for efficiency and silence, but PSU fans are usually not the loudest or most powerful fans in a system, so its kind of a small gain. However, I discovered that this negatively impacts the airflow in my case a bit, and I'd much rather have the PSU fan remain ON at all times to help exhaust air out of the case. Note that an i7-6700k and a GTX 1070 combined with other fairly low power components is not enough to EVER push this PSU high enough to turn on the fan. This speaks very well to the units efficiency, but it means even while my GPU dumps heat into my case, the PSU isn't helping exhaust any of that air. Count up your wattage, and don't buy a grossly over capacity unit particularly for use in smaller cases with limited exhaust flow rate.

So far, just installed it....really nice power supply. Super easy to install and not too big - modular. It comes with alot of cables but you probably won't use all of them. I happened to have a PCI express bus and used those supplied cables for my graphics card and the sata cables for my hard drives and DVD/Blue Ray drives. Had more than enough cables supplied and have 2 hard drives, and DVD and Blue ray along with the graphics card. Has instructions with the power supply. But if you have a Dell, pull down your user/service manual too...it gives a great insight to your actual machine. But quick getting in, no matter. Just look at what you have in there and what kind of cables you need before getting started that way you can kind of separate out stuff and get the cables line dup. The cables are wrapped really well and bend and tuck away well. Alll and all...nice drive and it actually sped up my computer since I am running an old Dell XPS 435T/9000 with a previous 475W power supply...which wasn't the best deal in the first place.

Solid power supply, fully modular. I do not have a problem with the cables. The mb, 6-pin cables are thick, but fairly pliable. The sata power cables are flat, and somewhat stiff, but not a problem unless you're trying to twist them (I fold- up the slack, shove that between drives - works for me). Only issue with the sata cables is the spacing. I just used three instead of two to handle my 6 drives. They make extender and splitter cables, which I used to get to my usb3 cards. A word to the wise: never use cables from another manufacturer, or model series without verifying compatibility! They all use the exact same connectors, but the pin-outs are very different. I wanted to leave all my XFX cables in place, saw that the connectors fit the Corsair perfectly. Dumb! Thankfully, in my case, my mb just wouldn't boot. When I looked it up I found plenty of horror stories about people burning out all of their hard drives/SSD's, instantly! I've been building computers and servers for 20 years, but not much recently, and this is only my 2nd modular for my own computer, so be warned!

So far it seems to be working well. I've had horrible experiences with Corsair power supplies in the past, and purchased this one out of desperation.... I initially purchased a EVGA 750 "Gold" rated power supply for a new Ryzen build, that cost me several hours of troubleshooting before I found it did not supply the correct voltages to the MB. After more research I found many instances online where EVGA power supplies have "incompatibility issues" with Ryzen MBs. The the only other 750watt Power supply I could find with decent rating was this one, so I took a chance, and so far it's worked out OK. Now, that being said, I am amazed it actually worked when it arrived. I don't know what in the world Amazon was thinking when they shipped it..... the Power Supply box ONLY....no packaging, padding, packing, or anything else! Only a shipping label stuck to the outer plastic of the power supply box! The box was ripped, muddy, and wet when it arrived. I think the only thing that saved it was the fact that Corsair packaged it well from the factory. WHY is it that Amazon packages the crap outta stuff that doesn't need it, and does NOTHING for fragile electronics such as this?!?!?

Quick Review: I really like the silent mode with the fan off - so much quieter. This is the only power supply I will ever purchase in the future. The fully modular cables are expertly done - makes for a very clean and neat appearance after the computer is built. I received this power supply just in time for my current computer build. This is my third build with a fully modular power supply in the past six months. Previously I used hybrid modular power supplies where the two main cables for the motherboard are hardwired, but the rest of the cables are modular which you can plug in cables as needed. The hybrid approach is functionally about the same as a fully modular power. You will always need the main CPU power cable and the main motherboard cable. And then there are the original style power supplies that have all the possible cables hardwired inside the power supply. Those power supply cables are somewhat challenging to route and hide the excess wiring. Fully modular power supplies allow you to have a much better cosmetic appearance or at least a consistent appearance. In this computer assembly I am building, I am using this Corsair power supply, Corsair Hydro Series H80i v2 Extreme Performance Liquid CPU Cooler , Black and Corsair Dominator Platinum 8GB (2x4GB) DDR3 2133 MHz (PC3 17000) Desktop Memory (CMD8GX3M2B2133C9) . I have used Corsair computer components extensively since 2009 and I've always been pleased with the results. I have the peace of mind that the system components will meet specifications and be reliable when there is Corsair inside. This Cosair 750 Watt power supply is more than I need for this system I'm building, but it is also nice to know that if I add more video cards, the power is there to handle it. There is a pigtail connector on the end of each PCI video cable that looks like it may be intended for an adjacent video card. I am starting off with one GeForce GTX 970 4GB FTW Gaming ACX 2.0 Video Graphics Card. In addition, I am using an ASRock LGA 1150 Extreme6 Motherboard, Intel Core i7-4790K Processor and 512 GB Samsung 950 Pro NVMe SSD module. I am attaching several photos relating to the power supply cable management. First I like to do a mockup of the cable arrangement to make sure I know where all the cables are going – in particular the 8 pin cable next to the CPU. I connect that cable first and route it out the corner to the backside of the computer case. If you wait to connect it after installing the motherboard, you’ll find it’s next to impossible to route it to the backside of the computer case. Also, I like to install the main motherboard cable before installing it into the case. It takes quite a lot of force to insert this cable to the motherboard connector and I don’t like to flex the motherboard with excessive force. I’m using a full ATX motherboard in this instance, so it isn’t quite as much concern. But if you are using a short version motherboard, there is no localized support for the motherboard where the main connector goes. So if you install this main connector before putting the motherboard inside the case, then you don’t run into the problem of flexing the motherboard. It is risky to flex rigid printed circuit boards. They put a sticky warning label over the power input connector to call your attention to the fact the fan does not rotate all the time – only if the power supply gets to a certain temperature from a heavy load. So they are saying not to panic if the fan isn’t rotating – that’s the way it is designed. My video card is the same way – fans only rotate under heavy loads or temperature above a predetermined level. I don’t like noisy fans, so this is a really nice feature for me. Otherwise, the cabling is fairly straightforward. Pick and choose your cables according to the configuration of your system and then route them on the backside of the case as much as is practical. If you put some thought into it and make a few trial and error changes, you can get a very neat and organized system appearance. And that is one of the main purposes of a fully modular power supply. I have used Corsair products quite a lot in the past seven or eight years and all their components are still working. I think you will be quite pleased with any of Corsair’s products.

Awesome power supply for a hungry system. I had a faulty power supply in my PC build and was lost as to what the fix was, my system would install windows but once it attempted to boot, my old PS would pass out. Picked this one up because my previous one was also a Corsair and lasted me 10 long years and a cross country move. This one is high quality, and the modular design means I only have to use what I need. The ports on the supply are easy to plug in and high quality. This made my build substantially easier in terms of cable management. If not this one, Id still recommend Corsair if you want high quality and a fair price.