Customer Ratings & Reviews

Bought this because I upgraded to a 5070ti and my factory 650w psu was not gonna cut it. Came with every cable i needed (in cool case too)and the install was extremely simple even if you're not a pc builder. Took maybe 15 minutes to swap it out and since its fully modular, you only hook up the cables you need. Its so convenient. Came with a 12vhpwr cable too so you don't need an adapter for newer gpus. Makes no noise from my experience and had a zero fan button to keep noise down even more. Love it and will highly recommend it for someone whos upgrading to a current gen gpu and needs the power.

I recently upgraded my PC with an NZXT power supply, and I’ve been genuinely impressed with the experience so far. Installation was straightforward thanks to the fully modular cables, which made cable management much cleaner and easier inside the case. The PSU runs very quietly, even during gaming and heavier workloads, and the system has been extremely stable since the upgrade. I also appreciate the solid build quality and clean design. It feels premium and reliable. Voltage delivery has been consistent, and the included cables were high quality and easy to work with. One of the best parts is the peace of mind from the long warranty and trusted performance. Overall, this NZXT power supply delivers excellent reliability, quiet operation, and great value for a modern gaming or workstation build. I’d definitely recommend it to anyone looking for a dependable PSU upgrade.

I recommend this PSU to anyone who needs a good value, good quality, easy to install PSU. not only is it fully modular, it looks good and has functionality that will keep your build running safer than using a different PSU. If you have an expensive setup DO NOT cheap out on a 80+ Bronze cheap PSU that barely keeps your build safe. If you have a RTX 5070 Ti like me I recommend a 80+ Gold.

After over five years, my EVGA SuperNOVA 850 G3 850 Watt Gold Power Supply was showing the early signs of failure, so I opted to replace it with the NZXT C850 Gold 850 Watt 80 Plus Gold Fully Modular Low-Noise ATX 3.1 Power Supply. It had all of the power connections that I needed for my computer, and it even included a power connection that I could utilize with my ASUS TUF Gaming GeForce RTX™ 4080 SUPER 16GB GDDR6X OC Edition without needing any adapters. So far, things have been going very well, and overall, I'm very pleased with the purchase.

High quality PSU, stays quiet, cool and delivers steady voltage. Fully modular cables were easy to work with!

Pick was quick and easy. The entire process from order to pick up was a breeze. This power supply also works perfect, great fit for my set up.

I've never used NZXT but I love how they are set up and how they are 3.1 ATX with three separate graphics card cables.. I just don't understand why there's a button in the back to turn the fan on and off.. shuldnt the fan always be on, idk nzxt isn't the only one that has on and off button for the fan though.. I just don't get it but other than that I would suggest in NZXT power supply units to anybody..

No issues. Would highly recommend for anyone building a PC.

Súper beautiful excellent choice for the price great pick

As another reviewer mentioned it was dead on arrival for me as well. I took the chance after seeing the other review, because the reviews on Amazon for it were very good. It didn’t boot whatsoever for me had absolutely no signs power. Its an actual brick. I’m not sure if Best Buy got a bad batch or what, nzxt is usually a trustworthy company.

The nearby Best Buy had it in stock, so I decided to purchase it despite its very bad reviews. Unsurprisingly, most of those bad reviews turned out to be accurate, as the unit I received was DOA.

Surprisingly easy to install, with quiet fans, was as described and works as advertised. My situation was special because I needed an additional special CPU cable with just 4 pins, and unlike many other power supplies, this modular one delivered on my need. Have had it for 2 weeks now and couldn't be happier with it.

Fit in case well. Installed in Old Antex 900 v2 case. Had a big problem though. The fan rubbed on top of power supply case. Didn`t have time to return so I went ahead and violated the warranty and fixed fan. The fan switch on back by power switch is a very confusing addition. You will see when you download manual and read how it is supposed to work. If you press it in, fan runs and when you leave it out, it`s automatic based on load. Why not just get rid of switch. Way too confusing. Even when running at 50% load, it's still very quiet. As for operation, works well and problem with old supply, high noise levels caused by failing high voltage capacitors, is now gone. Would buy again. Maybe next time, if fan rubbing case is a problem will return for a replacement.

Power supply was easy to use in my pc case nicely. I appreciated the cables were well labeled and nearly packaged.

Using this in a 7600X3D build with modest power requirements. I picked this power supply for a few reasons: 10 year warranty Manufactured by Seasonic Matches NZXT case aesthetic Sale Price I was a little concerned because the only 2 other reviews on Best Buy reported DOA power supply. Fortunately, the one I received worked perfectly right away. There is a fanless mode with a physical switch that keeps the fan from running when the power supply is below 50% load. My only complaint is minor. The included cables are sleeved but stiff and difficult to bend with capacitors included in the cable. Overall, very happy with this power supply.

Super smooth and easy to use! The modularity and number of cables included made this a great and easy addition to my PC build. Enough power so I have no worries about a constant source.

[Employee of bestbuy] For years, I've been a loyal Cooler Master fan and have used their cases for several PC builds. The NZXT H7 Flow RGB is my first venture into NZXT, and I have to say, I'm completely blown away by how thoughtfully designed a modern case can be. It has absolutely made me a convert. Pros: Brilliant Interior Layout: The design is just brilliant. The vertical placement of the power supply, completely hidden from view, is an amazing touch that dramatically cleans up the build's appearance. The overall spacing inside is generous and a huge upgrade from my previous cramped case. Exceptional Airflow & Cooling: The "Flow" in the name is no joke. The case has fantastic airflow options that are genuinely effective. It's keeping my notoriously hot Intel i9-14900K a few degrees cooler than my last case. There was also plenty of room to mount my Kraken 360 AIO radiator at the top, which is the ideal placement for optimal cooling. Effortless Cable Management: My previous case was a nightmare for cable management, and this NZXT case solved that completely. There's plenty of space and well-placed routing options that make getting a clean-looking build incredibly easy. Overall: I honestly can't say enough nice things about the NZXT H7 Flow RGB. It solved all the spacing, cooling, and cable management issues I was struggling with and looks fantastic doing it. As of September 2025, I believe I'll be sticking with NZXT for my future builds. Highly recommended!

Gold Certified, 850W more then enough to run high end pc parts, works for my 9070Xt and 7800x3D, highly recommend!

Works great and quiet. Easy to install and it has good quality modern updated cables for new graphics cards.

Great PSU Cables are stiff, Had to foster of force them in the under part of my case. Will be returning only due to a better deal on amazon for a 1000W, same version, getting a new mobo and will require more power so I went with the upgrade. For for a ryzen 7 7800x3D and a 9070xt it worked great, Would like more headroom. So if your someone who has a 5060, 5070 or any 40 series (besides 4090) It’s great!