Specifications
AX760
·
Continuous power: 760W
·
Regulated efficiency: 92%
·
Certification: 80 PLUS Platinum
·
Mounting: ATX
·
Regulated power supply: Max. current 12 V – Rail
1: 63A, Max. current 12 V – Total: 63A; Max. current 5 V: 25A; Max. current 3.3
V: 25A
·
Connection: Peripheral Standard: 8; soft: 0;
Serial ATX: 12; 6/8 pin PEG: 6; Total PED: 6
·
Mainboard connection: 24 pins
·
Color: black
·
Fan size: 12cm
·
Weight: 1.8kg
·
Depth: 16cm
AX860
·
Continuous power: 860W
·
Regulated efficiency: 92%
·
Certification: 80 PLUS Platinum
·
Mounting: ATX
·
Regulated power supply: Max. current 12 V – Rail
1: 71A, Max. current 12 V – Total: 71A; Max. current 5 V: 25A; Max. current 3.3
V: 25A
·
Connection: Peripheral Standard: 8; soft: 2;
Serial ATX: 12; 6/8 pin PEG: 6; Total PED: 6
·
Mainboard connection: 20/24 pins
·
Color: black
·
Fan size: 12cm
·
Weight: 1.9kg
·
Depth: 16cm
The AX760 is just
different from the AX860 in the load-capacity of the +12V rail. Just like the
expectation from a modern PSU, they are able to provide most power via the +12V
rail while the load-capacities of the +3.3V rail and +5V rail are rather low.
The PSU satisfies the 80 PLUS Platinum
standard, which is the strictest efficiency standard applied for PSU’s users
(there is an existence of stricter 80 PLUS Titanium standard for the server
PSUs).
They are accompanied by a 7-year warranty
just like its Seasonic counterparts.
UPS compatibility
Operating with our APC Smart UPS SC 620,
the AX760 seems to be very stable at the 410W uploads when powered by the
mains, but it could only switch to UPS’s pins at 300W or lower loads.
When powered by the mains, the AX860 is
stable at 416W but could not switch to Ups’s pin even at the level of 280W.
The cross-load voltage stability
All
voltages vary within 2% of the required level
Both PSUs perform immaculately in this
test. All voltages vary within 2% of the required level (which is just matched
with Seasonic’s promise for the similar PSU sold under its own brand) and even
within the 1% through most of the loads.
The +12V is still the most stable level for
both of the PSUs. It is always within 1% for the AX860 and for the AX760, the
voltage just exceeds that 1% limit at the load level which is near the maximum
one.
Output voltage ripple
Both PSUs’ results are almost the same in
this test, so we just show you the results of the senior model.
The
voltage ripple is considerably high
The voltage ripple is considerably high on
all power rails but always remains under the regulated level.
The
voltage ripple at low frequency (at the double main frequency) is weaker
The voltage ripple at low frequency (at the
double main frequency) is weaker.
Thermal and noise level
The
Sanyo Denki San Ace 120
The PSUs are cooled by a Sanyo Denki Ace
120 fan (part number: 9S1212F404, rated speed: 2200 RPM) which is well-known
for us by the Gold- and Platinum- certified products of Seasonic. It stands out
with a well-balanced fans and creating little noise. To optimize the air flows,
the fan is covered by a plastic layer.
We checked the cooling system in both
built-in modes, Normal and Hybrid.
In
the Normal mode, the fans of each PSU worked at about 800 RPM
In the Normal mode, the fans of each PSU
worked at about 800 RPM during a long range of loads. AX760’s fans started to
speed up at 600W loading and even became higher whereas the fans of the AX860
did the same thing at 700W.
At the peaked loads, the fans of AX760 and
AX860 operated respectively at the rate of 1,310 and 1,430 per minute. The
high-quality fans used here did not show any sign of inconvenience at such
rate.
The
fans did not work in the Hybrid mode until the load reached 450-550W
The fans did not work in the Hybrid mode
until the load reached 450-550W, but there is one uncomfortable thing about its
behaviors happening afterwards. It could sometimes raise the speed to 1,600 RPM
at loads which were still not the maximum one, which is audible even for a
Sanyo Denki San Ace 120.
Therefore, if you are fond of a quiet PSU
for most of the loads, you will prefer the Normal mode. However, if your device
works at loads what correspond to the passive cooling system or if you have got
other louder noise at high loads, it is certain that the Hybrid mode is more
appropriate.
Efficiency and Power factor
AX760
is 92.5%, 93.5% and 91.7% efficient at the load of 20%, 50% and 100%
respectively
AX760 is 92.5%, 93.5% and 91.7% efficient
at the load of 20%, 50% and 100% respectively. The peak of its efficiency is 93.9%
which is recorded at the load of 305W.
The
AX860 is 91.9%, 94% and 92.6% at the respective loads of 20%, 50% and 100%.
The AX860 is 91.9%, 94% and 92.6% at the
respective loads of 20%, 50% and 100%. Efficiency peaks at 94.1% which is
recorded at the loading range of 370 and 435W.
The power factor of each PSU is
approximately 99% at high loads.
Standby source
There
was no problem with their standby source
We got the similar results in this test for
both PSUs and we had to conclude that there was no problem with their standby
source.
