Specs and discussion
|Enermax REVOLUTION 85+|
|Rated output power||850W @ up to 50°C|
|Power specification||ATX12V 2.3/EPS12 v2.92|
|Efficiency||85% @ wide load
|80 PLUS certification||Silver|
|Input voltage (AC)||Auto-ranging 100-264v, 47-63Hz|
|Fan(s)||1 x 135mm (700-1,500rpm)|
|Operating temperature range||0-50°C|
|Cable runs (pre-attached)||
24-pin EATX (split) (12V1)
EPS 8-pin (12V2)
EPS 8-pin (4p+4p) (12V2)
1 x 6+2 PEG (12V3)
|Cable runs (modular, flat)||
2 x 6+2 PEG (12V5 )
2 x 6+2 PEG (12V5 or 6)
|Max combined 3.3V & 5V output||N/A|
|Dimension (W x H x L)||150 x 86 x 190mm|
The REVOLUTION 85+ is rated up to 850W with an ambient temperature of 50°C, matching other high-quality PSUs, and the company had a sample running at an ambient 65.9°C at this year's COMPUTEX show. Should a sudden power-requirement surge occur, the unit can run at 1,020W for a short period.
A single 13.5cm fan keeps the unit cool, spinning at a maximum of 1,500rpm at full load, but we expect it to hum along at less than 1,000rpm at most times.
Efficiency is excellent for a PSU in its class, ranging from 85 per cent to 91 per cent over a wide load - 20 per cent to 100 per cent - and the 850W has passed the 80 PLUS Silver specification.
Modular in nature, there's the usual gaggle of pre-attached cabling, including 24-pin power, dual 8-pin for the CPU, including servers, and a couple of 6+2 PEGs for graphics. The rest of the connectors are split, sensibly, over the various lines.
Enermax has opted for a six-rail 12V design, and the unit pushes out an impressive 70A (840W) on the combined rails, with each able to handle 30A - although not concurrently, of course. Each rail has over-current protection from 34-45A, too. Like most PSUs these days, it's very heavy on the 12V line, making up almost 99 per cent of the available power. Indeed, Enermax labels this as a feature.
The dimensions of the PSU indicate that it should fit in most chassis and its suitably high-end origins are revealed with an etail price of £184 - making it one of the most expensive sub-1kW PSUs on the market.