RM850/750 or AX750 PSU?

[Alex7]

Hi guys. I'm in a small dilemma. I must choose between these two PSUs. They are both around 100€. So I was just wondering is there any significant differences between them? And which one would you suggest? Thank you!

 

 

[cesrai]

Don't know but jhonny guru recommends the AX750.

[cesrai]

Both are recommended by Jonny Guru and it seems that AX is 80+ GOLD and RM is 80+Bronze.

[quan289]

If you want to put it into perspective, Corsair made the RM series to replaced the TX line in the mid-range segment, while the HX (despite it is only semi-modular), AX, and AXi still belong in the high-end segment. They offer better build quality, better electrical performance, and a longer warranty.

 

The RM series does put more focus on audible noise and would be quieter at mid to high loads.

 

RM is 80+Bronze.

 

The RM series is 80+ Gold like the original AX750.

[cesrai]

If you want to put it into perspective, Corsair made the RM series to replaced the TX line in the mid-range segment, while the HX (despite it is only semi-modular), AX, and AXi still belong in the high-end segment. They offer better build quality, better electrical performance, and a longer warranty.

 

The RM series does put more focus on audible noise and would be quieter at mid to high loads.

 

 

The RM series is 80+ Gold like the original AX750.

dafuq ??? I would have bet it's 80+Bronze.

[quan289]

dafuq ??? I would have bet it's 80+Bronze.

 

I don't know where you got it is Bronze from, but here's a few verification, that it is indeed Gold :

 

Corsair: http://www.corsair.com/en-us/rm-series-rm850-80-plus-gold-certified-power-supply

"RM Series™ RM850 — 850 Watt 80 PLUS® Gold Certified Fully Modular PSU"

 

Jonnyguru: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story4&reid=369

"Once again, I see a clean pass for 80 Plus Gold up there, so no problems for efficiency either."

 

Report from Ecova: http://www.plugloadsolutions.com/psu_reports/CORSAIR_RPS0020%20%28CP-9020056%29%20%28RM850%29_850W_ECOS%204103_Report.pdf

That's the result of the report when Ecova made the RM series Gold certified (they test PSUs at 115v, so at 20/50/100% load, it must be at least 87/90/87% efficient respectively).

[Alex7]

If you want to put it into perspective, Corsair made the RM series to replaced the TX line in the mid-range segment, while the HX (despite it is only semi-modular), AX, and AXi still belong in the high-end segment. They offer better build quality, better electrical performance, and a longer warranty.

 

The RM series does put more focus on audible noise and would be quieter at mid to high loads.

 

 

The RM series is 80+ Gold like the original AX750.

Thank you for the answer. I think I'll go with the AX since I don't mind noise.