The Rolls Royce of power supplies
It's the best, reliable, quiet, semi-modular so it doesn't clutter up the case with unnecessary cables. Just plug it in and forget about it!
TheSeasonic G12 GC (2024) series power supplies are available in ATX format with power ratings from 650W to 850W depending on the power requirements of your PC. Seasonic G12 GC (2024) power supplies offer 80 PLUS Gold standard certification capable of delivering at least 87%, 90% and 87% energy efficiency at 20%, 50% and 100% load. This efficiency, combined with active power factor correction, enables the G12 GC series power supplies to reduce electricity consumption. As well as being highly efficient, the G12 GC units use LLC resonant design and quiet intelligent fan control (S2FC).

Select your criteria
General information |
Product name |
Seasonic G12 GC-850 (2024) |
Brand |
Seasonic | |
Model |
SSP-850RT2 | |
Power and Efficiency |
Power |
850 W |
80 PLUS certification |
Yes | |
80 PLUS / Cybenetics certification |
80 PLUS Gold | |
Connectivity |
Modular |
No |
Modularity |
Non-modular | |
Power connector(s) |
2 X +12V (Power supply P8 - 2 x P4) | |
| 6 X Serial ATA power supply | ||
| 1 X ATX 20 + 4 Pin | ||
| 3 X Molex (4 Pin) Female | ||
| 3 X PCI Express 6 + 2 Pin | ||
Configurator |
PSU-CM compatibility |
+12V P4 |
| +12V P8 | ||
| +12V P4 and +12V P4 | ||
| +12V P8 and +12V P4 | ||
| +12V P8 and +12V P8 | ||
Cooling |
Fan size |
120mm |
Silent |
Yes | |
Power supply type (PC) |
Active | |
Design |
Power format |
ATX/EPS |
Power supply standard |
ATX12V | |
ATX 3.0 |
No | |
ATX 3.1 |
No | |
Multi-GPU |
None | |
Typical use |
Desktop computer | |
Physical characteristics |
Color |
Black |
LED RGB |
No | |
Height |
86 mm | |
Width |
150 mm | |
Length |
140 mm | |
Warranties |
Commercial warranty |
Seller 2 years
|
Legal warranty |
See terms & conditions
|
|
Safety Information |
Responsible person |
SeaSonic Europe B.V. |
Postal address |
Rietveld 7, 5258 ED Berlicum, Netherlands | |
Electronic Address |
europe@seasonic.com |
See all Seasonic products
Product referenced on 7 Oct 2024
It's the best, reliable, quiet, semi-modular so it doesn't clutter up the case with unnecessary cables. Just plug it in and forget about it!
I was expecting a quieter start-up thanks to this change of power supply, but the difference is less than I'd hoped. An assembly fault on my part, perhaps? Or unfounded expectations?
In any case, it runs, and that's the most important thing.
Quality power supply that provides my PC with very good power. Doesn't consume a huge amount of power - top-notch!
The power supply works perfectly: silent, stable and of good quality, as you'd expect from Seasonic.
I had a bit of trouble assembling it, mainly because of the layout of the cables and the space in the case, but once it was installed, everything ran smoothly.
Reliable, efficient and durable. I'd definitely recommend it to anyone looking for a quality power supply.
Quiet power supply, exactly as described.
The cables are just the right length to power everything.
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