| Power Jitter
jitter is read by accessing the power options displayed in the motherboard BIOS,
with the system obviously in an unloaded state. *All voltages were read from the Motherboard BIOS of
a ChainTech Zenith VNF4
Good solid performance from the AcePower 580UB here. The +12V
line might be a tad low, but it's generally solid and the +5V line numbers are
excellent. Looks like you can rely on this HEC power supply to deliver
stable and accurate power levels.
When looking at the Seasonic Power Supply test results we see two values, wattage
and volt-amps. Since it might not be clear what they measure, here's a brief
The volt-amp (VA) value is how much real
power is being consumed by the power supply being tested to provide the wattage
(W) value. The higher the VA value is, the more electricity is
being used by the power supply. Because no electrical device is 100%
efficient, there will always be some loss when converting AC to DC. The
closer the volt-amps and wattage figures are to each other, the more efficient a
power supply is. This is called the Power Factor: wattage / volt-amps =
Since we're testing with a 120W dummy load, the
load on the power supply (wattage) should be as close to this figure as
possible. Anything above this load in apparent power describes the overhead and
wasted energy (given off as heat) for the particular power supply being tested.
For the unloaded tests, the wattage and volt-amp figures should
be as close as possible to one another. The lower the figures are, the less power is being used.
Seasonic Power Load
||7 VA |
||21 VA |
|Antec TruePower 330
||38 VA |
|Ultra X-Connect Green UV 500W
||40 VA |
|AOpen Silent Power AO400-12AHN
||18 VA |
|PC Power and Cooling Turbo-Cool 510 Express/SLI
|29 W |
||32 VA |
|HEC Ace Power 580UB
||26 VA |
The HEC Ace Power 580UB proved to be about average
in terms of efficiency when compared to the rest of the non-active
PFC test group. Next to an Active PFC supply there is no
comparison at all in terms of power efficiency, which is expected. When unloaded, the
580UB showed average efficiency also.
The HEC Ace Power 580UB did well in terms of
power consumption. It's loaded consumption was the lowest of our non active-PFC group, but
its unloaded consumption was a little higher than some of the competition.
Powerful, fairly efficient and fairly attractive
HEC has built
a lot of nice features into the Ace Power 580UB PC, starting with its ample
wattage and current abilities and the dual video card connectors it offers for
SLI systems. We were also impressed with the copious connection abilities that
this PSU boasts as well as its efficient (for a non-active PFC power supply)
and stable performance.
If you are looking for a beast of a power supply to run
your cutting-edge desktop system, the HEC Ace Power 580UB is a good choice, and
as a bonus, it will add to the look of any modded case.
HEC offers a three year warranty on the Ace Power 580UB, which
should give you some peace of mind. We couldn't find a retail price for the PSU,
but I'd estimate it at around $85USD, and at that price it is worthwhile to consider.
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