The Enermax Revolution D.F.12 850W is the smallest ATX v3.1 power supply on the market today and measures just 122 mm in depth. It promises tolerance of up to 235% power swing, although the ATX specification calls for up to 200%, which is already overkill for today’s GPUs.
Reason enough for me to once again let my friend Aris from Hardwarebusters have his say (and picture) on this on our site, as he has not only tested this power supply intensively, but has also officially certified it through his company Cybenetics. As it will certainly be of interest to you, I am happy to offer him the platform to share his findings with you here on a case-by-case basis. And don’t forget, his website and YouTube channel also offer real gems of really well-founded reviews! The Enermax Revolution D.F.12 850W is included in his article on the best ATX v3.x & PCIe 5.x power supplies.
The Enermax Revolution D.F.12 850W defines downsizing in its own way as it looks more like an SFX-L PSU than an ATX PSU thanks to its super short length of 122mm. According to Enermax, the small size of the power supply offers great advantages: It fits easily into smaller cases, provides more space for cable management and extra volume that doesn’t get in the way of airflow. I can agree with the first two points, but not the last, as the airflow inside the PSU is greatly affected by the small size of the PCB, whereas most cases have a dedicated PSU compartment, so the size of the PSU doesn’t affect the airflow of the case at all. I’m not a big fan of compact power supplies as they are very noisy in most cases. But let’s see…
This power supply has a Cybenetics Platinum rating and a Cybenetics standard (35-40 dB[A]) noise level. The 120mm dual ball bearing fan has to spin at high speed to dissipate heat from inside the PSU, so it’s not exactly quiet. The unit is manufactured by RSY, a good OEM that handles production for other major OEMs, including Super Flower and Seasonic. It seems like RSY is looking to not only help manufacture other OEM models, but to get more into the PSU market with their own platforms. I look forward to having another competent OEM in this area.
Technical data | |
Manufacturer (OEM): | RSY |
Max Power: | 850W |
Cybenetics Efficiency: | [115V] Cybenetics Platinum (89-91%) [230V] Cybenetics Platinum (91-93%) |
80 Plus Efficiency: | n.a. |
Noise: | Cybenetics Standard (35-40 dB[A]) |
Compliance: | ATX v3.1, EPS 2.92 |
Alternative Low Power Mode support: | Yes |
Power 12V: | 849.6W on one single rail |
Power 5V 3.3v: | 100 W |
Power 5VSB: | 15 W |
Cooling: | 20mm Double Ball Bearing Fan (ZFB122512M) |
Semi-Passive Operation: | Yes |
Modular Design: | Yes (Fully) |
High Power Connectors: | High Power Connectors: 2x EPS (2x cables), 3x PCIe 6 2 pin (3x cables), 1x PCIe 12 4 pin (600W) |
Peripheral Connectors: | 8x SATA (2x cables), 4x 4-pin Molex (single cable) |
Cable Length: | ATX Cable Length: 600mm EPS Cable Length: 700mm 6 2 pin PCIe Cable Length: 650mm 12 4 pin PCIe Cable Length: 600mm |
Distance between SATA/Molex connectors: | 150 mm |
In-cable capacitors: | No |
Dimensions (W x H x D): | 150 mm x 86 mm x 122 mm |
Weight: | 1.37 kg (3.02 lb) |
Warranty: | 10 years |
Power Specifications
Rail | 3.3V | 5V | 12V | 5VSB | -12V | |
Max. Power | Amps | 20 | 20 | 70.8 | 3 | 0.4 |
Watts | 100 | 849.6 | 15 | 4.8 | ||
Total Max. Power (W) | 850 |
Enermax Revolution D.F. 12 850W ATX 3.1 (ETV850G)
Ab Zentrallager sofort lieferbar | 117,37 €*Stand: 22.01.25 23:26 | |
Zentrallager: Auf Lager | 117,39 €*Stand: 22.01.25 21:18 | |
Verfügbar - 4-6 Werktage Lieferzeit | 126,19 €*Stand: 22.01.25 22:57 |
- 1 - Introduction, overview and technical data
- 2 - Unboxing, cables and protective circuits
- 3 - Teardown: Topology, components, workmanship
- 4 - Load Regulation, Ripple Suppression, Transient Resonse
- 5 - Hold-Up Time, Timings, Inrush-Current
- 6 - Average Efficiency and PF
- 7 - Fan curves and noise
- 8 - Summary and conclusion
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