Enhance
ENP-7025E
At load 250W, this PSU has the lowest rated
power in this review because others have rated power from 300 to 350W. However,
that's enough for compact PCs, because many of them come with 200W or lower
PSUs.
The form-factor is TFX12V, like the
SS-300TGW from Seasonic.
The exterior design
The
exterior design
Compact form-factors leave but little room
for designer’s imagination, so the exterior is similar to Seasonic’s SS-300TGW.
We can only mention additional vents in the panel with cable and a different
design on the top panel (it is a single hole to the edge of the case)
Additional
vents in the panel with cable and a different design on the top panel
There is even less difference on the rear.
The vent grid is just smaller compared to the Seasonic SS-300TGW.
Circuit design
The
same hardware platform as the shorter FlexATX's PSU.
The main PCB is shorter than the case, so
we can expect the same hardware platform as the shorter FlexATX's PSU.
The
interior design is far different with the FLEX-0130B
However, the interior design is far
different with the above-discussed FLEX-0130B. The component desity is not high
and we can easily examine this model.
Enhance
ENP-7025E lacks dedicated voltage regulation
Specifically, we can see that Enhance
ENP-7025E lacks dedicated voltage regulation. We also mentioned that with the
previous Enhance.
The
connector itself is farther away from the main PCB due to the different
component layout.
The mains connector is screened in the same
way as in the lower-wattage unit from Enhance, but the connector itself is
farther away from the main PCB due to the different component layout.
Hopefully, this will have positive effect on the range of ripple voltage.
Chip
STR-A6069
The standby source is based on a STR-A6069
chip (its marking end is covered with a protective glue).
PWM
& PFC controllers are based on a Champion Micro CM6806AC chip
PWM & PFC controllers are based on a
Champion Micro CM6806AC chip that resides on a dedicated upright daughter card.
The chip is unusually small when compared
with other controllers, such as the popular CM6800.
Capacitors
from Teapo and Su'scon
PSU has capacitors from Teapo and Su'scon
at its output.
Specification
·
Total power: 300W
·
Input: Voltage input: 100~240 VAC Auto Sensing;
Frequency: 47~63 Hz ; Current input: 6 Arms @ 100 VAC; 3 Arms @ 240 VAC
·
Output: +3.3V @ 22A; +5V @ 12A; +12V1 @ 6A; 12V2
@ 16A; -12V @ 0.3A; +5Vsb @ 2.5A, total output load combined maximum on +3.3 V
and +5 V rails and shall not exceed 110 Watts
·
Holding time: 16 ms @ full load
·
Safety: OCP/ OPP/ OVP/ OTP/ SCP
·
MTBF: 100,000 Hours
·
Adjust EMC: FCC, CE
·
Connectors: 1x 20pin Main, 1x 4pin CPU
·
Cooling fan: 12V DC, 40x40x20mm
·
Dimensions (WxLxH): 3.2x5.9x1.6 inches / 82x150x40.5
mm
Conclusion
Firstly, we must admit that PSUs with 40mm
cooling fan is not a compelling choice for home users despite there are many
small casing for table PC with such PSUs.
Seasonic's Gold-certified FlexATX/Mini 1U
products leave a good impression. They are quite at low loads, comfort enough
at medium loads, but become too noisy at high loads. If the computer is used to
watch videos, surf the Internet or office applications, the PSU would be
passive cooled and completely quiet. They just become annoying noise in a
compact gaming system with a modest discrete graphics card.
Having the same form-factor, Enhance
FLEX-0130B is not suitable to use at home. It soon became too noisy. For server
applications, its performance does not seem attractive. By the way, the lacks
of a pleasant sound and low performance are not compensated by its price.
Seasonic SS-300M1U has the same cost but it offers better parameters.
TFX12V PSU with a 80 mm cooling fans are
generally better in terms of noise. Enhance, which is more noisy than both
TFX12V products in this article, is much quieter at a load of 200W compared to
the three PSUs with 40mm cooling fan.
As opposed to Enhance FLEX-0130B, Enhance
ENP-7025E is quite at medium loads and is not pleasant at high loads. Its
electrical parameters and price are good, too.
But the Seasonic SS-300TGW is the best
choice to build a compact home computer. Silent at the medium loads and quite
at high loads, it boasts excellent efficiency and high output power (by the
standards of compact PSUs). It's slightly more expensive than the Enhance
ENP-7025E but totally worth it.
