The XPG Core Reactor II 850W is a high performance and efficient power supply, offering a silent operation at up to 520W loads. It also comes with a 12+4 pin connector/cable, set at 600W, making it compatible with every GPU available in today’s market.
The XPG Core Reactor II 850W is included in my best ATX v3.0 & PCIe 5.0 PSU picks article.
XPG continues cooperating with CWT (Channel Well Technology), one of the best PSUs OEMs, responsible for many high-end units of today’s market. CWT provides the Core Reactor II line and consists of five models with capacities ranging from 650W to 1200W, so there is a suitable Core Reactor II unit for every system. These are ATX v3.0 compatible PSUs, but I am sure they will soon be upgraded to ATX v3.1 through a 12V-2×6 header on their modular panels; the only change required. I hope that XPG won’t lower the hold-up time by using lower capacity bulk caps since the new ATX spec is looser in this regard for unknown, at least to me, reasons. The XPG Core Reactor II 850W that I will test today has enough capacity to power a potent gaming system, and thanks to its compact footprint and the fully modular cable design, the installation procedure will be easy.
- Manufacturer (OEM): CWT
- Max Power: 850W
- Cybenetics Efficiency: [115V] Cybenetics Platinum (89-91%)
- 80 Plus Efficiency: Gold
- Noise [115V]: Cybenetics Standard++ (30-35 dB[A])
- Compliance: ATX v3.0, EPS 2.92
- Operating Temperature (Continuous Full Load): 0 – 40°C
- Alternative Low Power Mode support: Yes
- Power 12V combined: 850W
- Number of 12V rails: 1
- Power 5V + 3.3v: 120W
- Power 5VSB: 15W
- Cooling: 120mm Fluid Dynamic Bearing Fan (HA1225H12F-Z)
- Semi-Passive Operation: ✗
- Modular Design: Yes (Fully)
- High Power Connectors: 3x EPS (3x cables), 6x PCIe 6+2 pin (4x cables), 1x PCIe 12+4 pin (600W)
- Peripheral Connectors: 4x SATA (single cable), 4x 4-pin Molex (single cable)
- ATX Cable Length: 640mm
- EPS Cable Length: 650/750mm
- 6+2 pin PCIe Cable Length: 650mm (+150mm)
- 12+4 pin PCIe Cable Length: 650mm
- Distance between SATA / 4-pin Molex: 150mm
- In-cable capacitors: No
- Dimensions (W x H x D): 150 mm x 85 mm x 140mm
- Weight: 1.46 kg (3.22 lb)
- Warranty: ten years
- Street price (excluding VAT): $125
Power Specifications
| Rail | 3.3V | 5V | 12V | 5VSB | -12V | |
| Max. Power | Amps | 22 | 22 | 70.8 | 3 | 0.3 |
| Watts | 120 | 850 | 15 | 3.6 | ||
| Total Max. Power (W) | 850 | |||||
Can you please tell me the difference between this model and original one (without II) since the adata xpg core reactor without II is a lot cheaper here..? Thanks
Hi, which one would you recommend between this Core Reactor II, FSP hydro G Pro, Montech Titan Gold or Thermaltake PF3 850w?
Thankyou in advance
Core Reactor II or FSP hydro G Pro,
Hi thankyou for replying, is the new Core Reactor fan still noisy?
Are there other better PSU than those two?
Can you mention few of them?
Thanks a lot!
Please look in my best PSU’s article to find the less noisy in this category. I have them all there.
Best overall for 230V still are these three?
Super Flower Leadex VII XG 850W, Cooler master V850i and NZXT C850 Gold?
Those might be better than the XPG right?
Hi crmaris
I am seeing that it is a very good PSU for the price, what do you think about buying it to use with a 4070TiSuper and an R7 7800X3D? 850W
It will be fine!
Hi crmaris.
After buying this power supply, I decided to test it with a tester from Aliexpress. When the tester is turned on, it starts beeping and Power Good flashes with a reading of 130.
All other indicators are normal.
Can you tell me if this is a factory defect or can I use this power supply?
P.S. I checked the tester on my old Deepcool PQ750M power supply. There it works without beeping and PG blinking.
You can use the PSU. These cheap testers are for basic stuff only.
Thank you, for your reply.
Hi crmaris, is this one better then the first core reactor? Price difference is big.
If you don’t care for ATX v3.0 and the 12VHPWR cable, you can go to the first version.