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

[windwithme]

[windwithme]

[windwithme]

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

OCCT V3.1.0
POWER SUPPLY Mode


Enter to OS desktop - 153~156W


Run OCCT Power Supply Test Items
i7-950 default is 3.07GHz. 4 physical cores and 4 HT cores full load plus GTX460 - 392~418W。


Power Angel shows this X58 default mode max power consumption is 418W
According to 80Plus website,
output 50% transfer efficiency is around 90.80%
After transferring, 110V 418W is around 380W 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 3.34V and mostly it’s between 3.31~3.33V during test. The voltage wave is around 0.90%


5V
Mostly it’s between 4.84~4.89V. The voltage wave is around 1.02%.


12V
The highest is 12.37V and the mostly is 12.24V. The voltage wave is 1.05%.


3V and 5V voltage wave is around 0.9~1.02%. It’s very good condition.
Even 12V is only 1.05%. You can see this PSU in high load condition is still working excellent.

Using More Accurate Meter
Idle
5V testing result is 5.03~5.05V which is higher than board meterage 4.89V.


OCCT Full Speed
The voltage is 5.06V which is higher than idle condition.


Idle
12V testing result is 12.18~12.19V which is some different with board meterage 12.37V

[windwithme]

[windwithme]

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

Idle
The voltage is 12.17~12.18V which is different with board meterage 12.3V


OCCT Full Speed
The voltage is 12.14V which is lower than idle condition around 0.03~0.04V


You can see no matter idle or OC, 5V is raising 0.1V
There is no 5V dropping 2.26% status in OCCT software.
12V wave is only 0.03~0.04V. Even though it’s bigger than default, it’s still only 0.33% wave.
These 2 factors are much lower than mainboard meterage.

CORSAIR Professional Series Gold AX750W Conclusion
Good
1.Professional Series new packing and accessories are very good quality
2.CORSAIR provides 7 years warranty
3.Modulized design for better flexibility. The inner capacitors are Japanese made and solid caps.
4.80Plus Gold Certificate and the energy efficiency is 90.80%
5.5V is no dropping in meter test and 12V is only falling 1%. The voltage wave is very small.
6.It supports Hybrid Silent Fan Control technology which fanless below 20% output.

Weak
1.Suggesting they can add 6 X PCI-E 6+2 Pin
2.80Plus Gold Certificate and good components make the price be too high



Performance ★★★★★★★★★☆
Components ★★★★★★★★★★
Specification ★★★★★★★★★☆
Outlook ★★★★★★★★☆☆
C/P Value ★★★★★★★★☆☆

I used to review Seasonic X-SERIES 750W which is good components and performance Gold product.
You can see CORSAIR Professional Series Gold AX750W should be ODM by Seasonic.
Before, Seasonic ODM PSU has better components than own brand one.
AX750W inner layout is very different with X-SERIES 750W. I think it should be the revised upgrade version.

There are some special parts within my test.
First is the fanless mode in Idle condition. The PSU body temperature is also low.
During CPU/VGA full speed running, fan rpm is controlled by output rate. I don’t hear any obvious noise.
PSU body temperature is always below 40 degree C. It’s good control for noise and temperature.

CORSAIR AX750W price is around 170USD.
The key concerns of buying PSU are components, 80Plus Level, price, warranty and brand awareness.
AX750W is high end components level. I think 80Plus level doesn’t equal to components.
For the price, many non-modulized or lower components grade PSU price will be much lower.
I hope this review can be reference for the users who want to own a Gold Certificate and high end components PSU.
windwithme will introduce more Gold Certificate PSU in near future. Thanks. :)

This article is also in my blog WIND 3C. Any comments are always welcome :)