Specifications and Features
First, specifications. These are direct from CoolerMaster’s product page for the V850.
| Model | RS850-AFBAG1-US; RS-850-AFBA-G1 |
| Type | Intel Form Factor ATX 12V V2.31 |
| Dimension | 150 x 170 x 86mm / 5.9 x 6.7 x 3.4 inch |
| Input Voltage | 90-264Vac (Auto Range) |
| Input Current | 10 – 5A |
| Input Frequency Range | 60 – 50Hz |
| PFC | Active PFC (>0.9) |
| Power Good Signal | 100-500ms |
| Hold Up Time | >17ms |
| Efficiency | 90% Typical |
| MTBF | >100,000 Hours |
| Protection | OVP/UVP/OPP/OTP/SCP |
| Output Capacity | 850W |
| Operation Temperature | 0-40°C |
| Certification | CE/TUV/TUV-SUDNRTL/FCC/GOST/CCC/BSMI/C-tick/KCC |
| Fan | Silent FDB 135mm |
| Connector | M/B 20+4 Pin x 1 CPU 4+4 Pin x 1 PCI-e 6+2 Pin x 6 SATA x 9 4 Pin Peripheral x 4 4 Pin Floppy x 1 |
| Warranty | 5 years |
| UPC Code | 884102020780 |
Most of the above is simply the ATX PSU specification guidelines. The temperature rating is lower than I expected, capping out at 40°c, I was hoping for 50. FDB fans are nice, I’m hoping this one is like others I’ve seen. The Molex connector count is a bit low for my tastes, but the rest is decent. A case could be made for a second CPU power cable however. As a final note, I hope it really does have SCP, I’ll be testing it.
Next, the features!
I’d prefer to see multiple 12 V rails personally. Also note that the 93% efficiency for gold is only with 240v input power. 93% on 120v would clear Platinum. I’m really hoping we find more than a single Japanese capacitor, too.
ATX specifications require 12V rail ripple to be within 1%, CoolerMaster seems to be showing ripple scope shots and talking about regulation, two very different things. We’ll see how it performs.
Next is photos though.
