CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black

I bought this Corsair RM1000x ATX 3.1 (2024) PSU to replace a faulty ASRock PSU. As one other review mentioned, the Cybenetics rating on the box for power efficiency has been recently updated from Gold to Platinum, which will help keep long term energy costs down for people who live in areas with expensive electricity. When unboxed, the power supply feels and looks like a premium product, and indeed it is. The modular cables in the box all come with individually sleeved wires, and the 12V 2x6 connector and ATX 24 pin connectors come with clamshell style cable combs preinstalled, which seems to be a newer development with this unit. I looked at multiple tech site reviews of this power supply and the only one with cable combs I found was the Kit Guru review, and those were manually installable traditional style combs. The cables did have a bit of a petrochemical smell to them, but it was far better than the ASRock unit I replaced. The cables on the RM1000x are also longer and more flexible than on the ASRock unit, making routing in my mid-tower case easier, specifically for the CPU (length) and ATX 24 pin (flexibility). The power supply performs exceptionally well, making absolutely no coil whine noise at any load, and works completely silently at loads below 500 watts. The fan control knob on the back of the unit comes out of the box set to 0 RPM low noise mode, leaving the fan off until the aforementioned 500 watt limit is exceeded. If you don't care about 0 RPM low noise mode, you can adjust the knob clockwise until it clicks, at which point you're manually controlling the fan, allowing you to set a constant fan speed anywhere in the fans RPM range. One thing to note is that the 12V 2x6 connector that comes in the box only has 2 of the four sense pins, but this is totally fine, as it powers my RTX 5080 without issue, so don't be concerned that two sense wires are "missing". I was extremely lucky to get this unit at a cheaper price only a day before it raised to its current price, but even around the $200 mark, this power supply is worth the price. Overall I give this power supply a 9/10, and only because I don't like that the fan is gray instead of black, which honestly is likely a complete non-issue for most people.

For as long as I've been building my own computers - more than twenty-five years now - I've used Corsair power supplies. I don't necessarily think they are better than any other brand, but they've never let me down, despite all my computers generally running 24/7 in dusty, sometimes humid, sometimes 90F environments. I purchased this not because my old Corsair supply failed, but because I was installing a 5070Ti and wanted higher output as a result - the 650W would have barely been suitable. Swapping supplies was dead simple; the old one slotted in place of my old RM650x, and all I needed to do is replace the old power cable from the RX470 with the newer 12V-2x6pin. I have all Cablemod Sleeved cables and debated replacing the the new 12-pin connector with a sleeved variant, but it's so flexible and clean looking I decided the Corsair one was just fine. I've been running for about three months now without any issue. Obviously not much time on a PSU but I doubt I'll have problems. As an aside, this one has a variable fan speed knob. So far as I can tell, if you leave it off it will just run in normal, automatic mode, whereas if you use the knob it will instead always run at a certain speed. I think, I'm not totally clear on it. I just keep the knob off - my system is already very quiet and I don't think I've ever heard the PSU fan turn on even with my old supply, much less this newer one. As my mobo doesn't support PCIe 5.1, I can't comment on that part of the component. I would definitely recommend this RM850x, and would recommend Corsair in general, so far as PSUs are concerned. They seem very solid and well-made, and I've never been disappointed by them in the past.

Nice psu with a quiet fan that is adjustable and makes low noise and works well. Good cables too

Corsair RM1000x (2024/2025 Refresh) I’ve been using the RM1000x series for years, but this latest refresh is a must-buy if you're running high-end hardware. Here is why this specific model is a step above the rest: The 12V-2x6 Safety Upgrade: This isn't just a rebranded cable. The 12V-2x6 standard fixes the "melting" issues from the older 16-pin designs by using shorter sense pins. If the cable isn't 100% seated, the PSU simply won't send full power, protecting your GPU from thermal damage. It's a huge peace of mind for anyone with a 40-series or 50-series card. Which was the exact reason I purchased it. If you are going to spend the money to buy the latest and greatest video card then by all means don't skimp on the power. Tactile Cooling Control: The Manual Fan Override Knob is a game-changer. It’s located right on the back panel next to the power plug, so it's fully accessible from outside your case. You can leave it on Zero RPM mode for total silence during work or manually crank it up to 100% during a marathon gaming session to keep the internals chilled. It's so satisfying to know that the fan that is inside PSU is not only running but as fast as you want it to because you can dial it in to your needs. Premium Internals: It uses 100% Japanese 105°C-rated capacitors, which are the highest tier for longevity. It’s Cybenetics Gold certified for efficiency and holds an A- noise rating, so even when it is working hard, it stays whisper-quiet. Build-Friendly Cables: The cables are "embossed," making them much more flexible and easier to route through tight spaces than the old stiff, sleeved versions. The Pro Tip: Register this PSU on the Corsair site immediately. It comes with a 10-year warranty. Corsair’s support is top-tier, and with a decade of coverage, this is likely the last PSU you’ll need to buy for the next several builds.

استخدمعه على معالج i5 14400f وكرت RX 6650 XT، ممتاز

Sturdy, functions as intended. Would buy again. Only downside is it took forever to be delivered.

La instalación fue sencilla y, hasta ahora, ha funcionado sin problemas, proporcionando una energía estable y fiable para mi sistema (R5 5600 + RX 9060 XT). Un detalle importante para quienes tengan dudas sobre los cables (por un detalle con una NZXT C850): los cables SATA son rectos, lo que puede ser útil para ciertos gabinetes. También vale la pena mencionar que no son enmallados, lo que facilita su manejo al momento de doblarlos o ajustarlos en el gabinete. La fuente es bastante silenciosa, incluso bajo carga. Esto es especialmente importante para quienes buscan un sistema más silencioso sin sacrificar potencia. Además, es una fuente de 80 PLUS Gold, lo que significa una alta eficiencia energética, y la certificación también asegura una mayor durabilidad (incluye condensadores japoneses).

I have to admit, when I first saw the knob on the back of the RM1000x that lets you control the fan or switch it to automatic, I was a bit nervous. I wasn’t sure if I’d mess something up or if it would be tricky to use. But honestly, this PSU completely exceeded my expectations. After 4 months of daily use, I can confidently say this power supply is game-changing. It’s rock-solid, completely stable, and handles everything I throw at it, gaming, streaming, multitasking without a single hiccup. The fan control is actually a brilliant feature: I keep it on automatic, and it’s whisper-quiet unless things get really heavy. The build quality is top-notch, cables are easy to manage, and everything feels extremely premium. I feel like this PSU is going to last me years without any issues, and it really gives peace of mind knowing my system is in safe hands. If you’re looking for a reliable, high-performance, and versatile PSU, the RM1000x is worth every penny. After 4 months, I’m extremely satisfied and can’t imagine going back to anything else!

Upgraded from my 650w as I got a 5080 and needed more wattage. Excellent quality from the RMx line, runs quiet and have had zero issues with my previous 650w in the 6 years I had it - which is why I went for the same RMx line for this upgrade. My only quip is that the new cables no longer come with the cleaner looking netted wire wrapping. The wires are now unwrapped but textured to mimic the old net wrapping.