Review Corsair RM750x (2021) Power Supply Review

[Admin]

The Corsair RM750x (2021) leads the 750W Gold category.

Corsair RM750x (2021) Power Supply Review : Read more

 

[RAZ0RLIGHT]

Is there any reason why the 2021 revisions fan curve is so much more aggressive?
This would be the perfect Gold PSU if they would have implemented the same fan curve as the older 2018 revision.

 

[I]

Is there any reason why the 2021 revisions fan curve is so much more aggressive?
This would be the perfect Gold PSU if they would have implemented the same fan curve as the older 2018 revision.

Disagree. It's still very quiet and I'd rather a tiny noise increase to reduce temps, increase lifespan.

This is probably what Corsair determined as well through wear testing, decided that not only would that reduce their warranty fulfillment costs but also improve customer satisfaction by having a longer lasting product.

If you don't care about the warranty, crack it open, put a few tens of ohms 2W resistor in series on the fan power lead, or just swap in a lower RPM fan, or mod the fan control circuit, or wear earplugs, or put the system under your desk, or get a cat plus 100 mice let loose all at once and you'll never even notice the very slight fan noise.

Besides, it's all a bit silly. If your system is pulling that many amps it's going to need its own more audible fans running anyway. For good lifespan. An internal, reward-facing exhaust, oriented fan is the least audible way to pull or push air through a system.

 

[Russll]

Hello
A few days ago I bought a Corsair RM750x (2021). Now the power supply consumes little (20-30%) because it works without a video card (AMD 5700G only).

The Aida64 and OCCT show voltage on rail +12V - 11.884V, and on rail +3.3VCC - 3.248V, on rail +5V - 4.980V (computer idle, browser only).

In the game, the voltage rises and shows on rail + 12V - 11.980V (maximum), and on rail + 3.3VCC - 3.264V (maximum), on rail + 5V - 5.020V.

Is this normal at all.?
There is no full 12V on rail + 12V, and no full 3.3V on rail + 3.3V..
Maybe I should return the product to the store.?

 

[drivinfast247]

Hello
A few days ago I bought a Corsair RM750x (2021). Now the power supply consumes little (20-30%) because it works without a video card (AMD 5700G only).

The Aida64 and OCCT show voltage on rail +12V - 11.884V, and on rail +3.3VCC - 3.248V, on rail +5V - 4.980V (computer idle, browser only).

In the game, the voltage rises and shows on rail + 12V - 11.980V (maximum), and on rail + 3.3VCC - 3.264V (maximum), on rail + 5V - 5.020V.

Is this normal at all.?
There is no full 12V on rail + 12V, and no full 3.3V on rail + 3.3V..
Maybe I should return the product to the store.?

Perfectly normal operation.

 

[Russll]

Perfectly normal operation.

Thanks, I hope everything goes well.

 

[stateofdade]

Just purchased one of these based on this review. Thanks for the information and the deep dive into this PSU.

 

[NoxMorbis]

I can't believe they used in cable caps. Shoddy and ridiculous. I have the 2018 RMX and I HATE those inline crap caps. I also looked at the soldering and found flux still stuck to the joints. Shoddy soldering is apparent. Geeze, what a quality control step down. I just think in line caps are fudging, although In know most do it.