Hybrid Silent and High Efficiency Gold Metal PSU - CORSAIR AX750W Review

[windwithme]

OCCT Full Speed
The voltage is 12.17V which is lower than idle condition around 0.01~0.02V


5V is rising to higher voltage in full speed condition.
12V only has 0.01~0.02V small wave. This meterage is much lower than mainboard measurement.

OC System Setup
CPU 180 X 23 => 4140MHz
DARM DDR3 1800 CL7 8-7-20 1T


Enter to OS Desktop - 186~190W


Run OCCT Power Supply Test Items
i7-950 OC to 4.14GHz, 4 physical cores and 4 HT cores full load plus GTX460 - 596~636W。


Power Angel shows this X58 OC mode max power consumption is 636W
According to 80Plus website, there are only 20, 50 and 100% transfer efficiency.
I decide to use transfer efficiency at 100% and it’s about 88.11%
After transferring, 110V 636W is around 560W real output.

OCCT Test Result
CPU Voltage Variation
Disable Intel C1E in default mode. CPU clock and voltage both rise to highest.


3.3V
The highest is 3.33V and mostly it’s between 3.28~3.3V during test. The voltage wave is around 1.50%


5V
Mostly it’s between 4.87~4.76V. The voltage wave is around 2.26%.


12V
The highest is 12.3V and the mostly is between 12.18~12.24V. The voltage wave is 0.96%.


3V and 5V voltage wave is around 1.5% and 2.26%.

Even 12V is only 1.05%. You can see this PSU in high load condition is still working excellent.

3V and 5V voltage wave is around 1.50 and 2.26%.
The wave range is higher than default mode. However, it’s still much lower than acceptable 5% tolerance.
12V is even lower. It’s just only 0.96%. You can see this PSU in 75% high load condition is still working excellent.

Using More Accurate Meter
Idle
5V testing result is 5.05V which is higher than board meterage 4.87V.


OCCT Full Speed
The voltage is 5.06V which is lower than idle condition around 0.01V