Enhance ENP-5140GH 400W Power Supply

I received the Enhance power supply that I’m reviewing today in a very unassuming package: A plastic bag. The power supply is sold as an “OEM” unit, with no retail box, manual, etc.

PRODUCT: Enhance ENP-5140GH 400W
PROD LINK: Enhance USA’s current offerings.
PRICE: $79.99 @ NewEgg
Price is at the time of testing!

Fortunately, the website is fairly informative, so one knows what they’re getting into before ordering an ENP-5140H power supply. Hopefully, this review helps as well. 🙂

Enhance ENP-5140GH 400W

The ENP-5140GH is only 5.5″ deep, so it will fit in the smallest ATX cases. It’s also full range active PFC, so it works with virtually any AC input (within 100 to 240V)

Enhance ENP-5140GH 400W

The label boasts a < 25dBA noise level and “80 plus” efficiency. With 80% efficiency, the power supply shouldn’t generate much heat, so a 120MM fan doesn’t have to spin very fast and move much air, therefore it can be very quiet.

Enhance ENP-5140GH 400W – Cabling
Type of connector:
ATX connector 20+4
2 x 2 12V connectors 1
2 x 3 PCI-e 1
8-pin Xeon/EPS connector 1*
6-pin Xeon/AUX connector 0
5.25″ Drive connectors 4
3.5″ Drive connectors 1
SATA Drive power connectors 4
Fan only connectors (thermostatically controlled 12V only) 0
* = Two four pin connectors combine to create the 8-pin EPS+12V connector

Enhance ENP-5140GH 400W

Enhance ENP-5140GH 400W

Above is a shot of the label on the side of the ENP-5140GH. Note the lack of a 12V combined rating. An email to Enhance resolved that the combined 12V rating was 28A.

Enhance ENP-5140GH 400W – DC Output
DC Output +3.3V +5V +12V1 +12V2 -12V +5VSB
20A 14A 16A 18A 0.3A 3.0A
Max Combined Watts 130W 336W 9.6W 15W

In confirming the combined 12V rails were in fact limited to 28A, I put a number of experimental loads on the unit. I found that each 12V rail’s limiters have in fact been set to exactly 16A and 18A and that any combination that was greater than 28A would trip the power supply.