









⚡ Power your ambition with silence and style.
The XPG CORE REACTOR II is an 850W ATX 3.0 power supply unit designed for demanding workstations and gaming PCs. It features a fully modular cable system for clean builds, 80+ Gold efficiency for energy savings, premium Japanese capacitors for reliability, and an intelligent fan curve for quiet operation. Overvoltage protection and wide compatibility make it a future-ready choice for professionals seeking stable, efficient power delivery.






| ASIN | B0CBQVP6SS |
| Best Sellers Rank | #154 in Computer Power Supplies |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,600) |
| Date First Available | July 12, 2023 |
| Item Weight | 3.5 pounds |
| Item model number | COREREACTORII850G-BKCUS |
| Manufacturer | ADATA |
| Product Dimensions | 5.51 x 5.91 x 3.35 inches |
A**R
Efficient and reliable power
Used this on another build before. I bought it for the high efficiency rating which helps improve thermals and generally indicates good build quality. Happy with the performance and have not run into any issues or overly loud fans. It would be nice if there were some PCI power cables that did not include a second power head but it does make it easier to run just 1 cable instead of 2. Plenty of power ports to support most builds. The dimensions should work for most ATX builds.
A**C
Very quiet, was recommended by Tom's Hardware
This review is for: XPG Core Reactor Modular PSU: 80 Plus Gold - ATX - Fully Modular Power Supply - 10 Year Warranty - 650 Watt. Overall: Quiet. Stable power. Tom's Hardware recommended. Due to the CPU line's length, would probably recommend another power supply if you want/need to route through a backplane. Otherwise won't be an issue. Review: A Tom's Hardware PSU review had this listed as a recommendation, so I bought it. Technically it was my second choice but seems to be good quality. My previous power supply was quite loud with a 30% load, but this one is very quiet. I do wish the CPU power cable was longer though. The non modular cables are also pretty stiff. I ended up having to route the CPU cable over the mother board instead using the backplane. My system hasn't had any stability issues. I mention this because the PSU is one component to not skimp on. Even decent brands can have problems with power dips, consistency on the various rails, or ripple. If I had to go back, I would probably choose another power supply with a longer CPU line. However, if you don't need to route cables on a backplane, it won't be an issue for you.
R**C
Awesome PSU at reasonable price point. Modular goodness and quiet.
Used in a new build with Ryzen 5 4500 and other assorted goodies. Have no complaints about this PSU. Have been running the new system about a month now and it is quiet and delivers the power without issues. The cables can be stiff so be aware of that. I really like the modular hookups and the carrying bag for unused cables. It's a great Power Supply so far.
C**T
Solid unit, but full towers be cautious.
Unit came with everything I needed, and it's performing well. Only complaints are the thicker cables (24 pin, 8 pin cpu, 6+2) are VERY firm and not super flexible and the 8 pin cable is also a little shorter than what would likely be ideal. This made it very difficult to plug in to the motherboard AND reach the psu. Another inch or two would make things easier. If I was using a full tower rather than a mid tower, I don't think the cable reaches. If you are doing build with a full tower and ATX motherboard, I'd check the location of the PSU bay first. That said, great value for the price.
A**T
So far so good ...
When building my first PC last year in November, I wasn't really sure which PSU to get. I was a bit tight on the financial side of things and was looking for the best power supply for the money I had at the moment. You know what they say... You can't just cheap out on the PSU and expect your PC to be good. That's a vital component of any build out there. So after reading tons of reviews, consulting with folks on Reddit, and watching tons of videos on YouTube, I finally decided to give this one a try since this particular model had many good reviews, and luckily, this was a good decision. It didn't disappoint. The unit itself is modular, and the build quality is pretty good. The unit itself is heavy. All cables, although stiff, are of decent length and were packaged in a dedicated high-quality sleeve. The whole package itself was pretty good. I really liked it. It feels really premium. I know that 4 months isn't that long, but it's been running up quite well. No complaints. At the end of the day, I'd really recommend this unit to anyone who's looking for a good PSU at a decent price.
A**R
Good pau replacement. Many cable options.
Works great so far
A**.
RMA/Product Support does not exist
Similar to another reviewer I bought this PSU and within 4 months I started getting "Event ID 41: "The system has rebooted without cleanly shutting down first" This has largely been cited as a issue found due to bad PSU's. Upon looking at Event Viewer on Windows (Windows Key + X -> Event Viewer -> Event Viewer Local -> Overview -> Critical) I saw I had 5 reboots in a matter of 1 hour. I went through a thorough set of instruction through Microsoft support pages and air-blew out my components with a vacuum to suck up dust but everything was to no avail, nothing worked. I am leaving this review now because Just a matter of minutes ago my PC started boot-looping but the most terrifying kind. The boot loop where it turns on the PC and immediately shuts off without even reaching the motherboard page to configure setting in the bios. It rebooted 5 times in the matter of 15 seconds, I turned the power off and for 3 minutes the PC was off. After the 3 minutes the PC power ITSELF on again and started doing the boot-looping again until I quickly pulled the plug. I have not since turned on the PC because I am praying that none of the components were damaged. ADATA who is the owner company of XPG is notoriously bad at RMA processing in which you recieve no answer and if you are lucky enough to it is after months of waiting. I did not purchase this component without research, it was on a PSU tier list I trusted but I will be letting the community know of my experience so they do not have to go through the stress of potentially damaging their computer and components on an expensive and claimed to be highly related death machine.
W**N
No issues so far!
This modular power supply works great with my external graphics card setup. It came well-packaged and with black braided cables, though the cables are quite stiff. It runs cool, likely because the fan runs continuously when powering the graphics card, even at low loads. When running AI models, either the PSU or the graphics card makes a slight buzzing noise. The standard form factor made installation a breeze. The PSU has a clean aesthetic too. Overall, I'm very happy with my purchase.
E**D
So wie es laufen soll läuft es
S**I
This is a very modern CSE based CWT platform. PSU is more quiet then my EVGA G3 850 in my other computer. Design is nice and PSU has some heft to it. Turned on and works as expected. For the price, you're getting solid Japanese capacitors all around. Veyr happy here with a nice 10 year warranty on the side. Best part are the cables. I didnt find them too short or long. Just right for the 4000D airflow case. And you get 4 PCIE cables instead of 2 on the 850x which killed it for me. Nice 16awg cables too for the mains. Wont have any issue filling the Nvidia 12VHPWR adapter connectors without falling short. Dont know why other PSU manufacturers cheap out on cables. So far so good XPG. Tier A (gold) on LTT/Cultist PSU listings.
C**.
XPG non sarà un brand conosciuto come Corsair o EVGA ma l'alimentatore in questione (Core Reactor 850w) è di ottima qualità e non ha nulla da invidiare all'RM850x. Se proprio si vuole cercare il pelo nell'uovo devo dire che non ha una ventola maglev, ma non è per niente rumoroso. E il prezzo è tutto sommato onesto. Consigliato.
M**S
Fuente de poder excelente! Fácil de cablear todo, solo le agregaría alguna extension los cables pueden ser un poco cortes para un buen manejo de cables
İ**Y
Ürün çok kaliteli ve modüler olması avantajlı. Birçok farklı kaynakta A tier olarak sınıflandırılmış.
Trustpilot
3 days ago
2 months ago