Corsair RM850X
Corsair RM850X
I followed all the suggestions from the forum and chose the Corsair RM850X.
After installation, the PC failed to boot and I asked several questions.
Here’s what I noticed:
1. All supplied cables were used, not the old ones.
2. All plugs were installed properly.
3. Previous connections remained intact.
4. The Cmos battery was removed and the attempt still didn’t work.
5. Output was checked with a multimeter; all pins showed correct voltage (per Corsair instructions).
6. The old PSU was removed and replaced with a new one, except for changing the boot sequence, which worked.
7. The new PSU was connected only to the mainboard (no peripherals), but no response was received.
What might I have overlooked?
Main Board ASUS PRIME B760M-A WIFI D4
Are there any BIOS settings I should adjust?
I was advised to upgrade my old Corsair RM750E, so I chose the Corsair RM850X. https://forums. The post mentions using a CX 750W unit. The RMx model I have is likely better suited for that power level. Can you share the link to the RMx unit I bought?
The question is unclear about whether your motherboard requires the -12V rail. Some newer Corsair PSUs (ATX 3.1) have removed the -12V supply, while a few motherboards still need it for COM ports or audio. I'm considering upgrading my old RM850X (previously ATX 3.0), but I won't be purchasing a modern RM1000X because of the missing -12V. I don't want to waste effort installing a third-party +12 to -12V converter board into the system to fill in the gap in a Corsair unit. Most users likely won't miss -12V, though it might surprise some. If you look at reviews from other manufacturers, they often keep the -12V supply just in case. I think -12V isn't essential in ATX 3.1, but when you're spending more than $100 on a PSU, it feels like cutting corners by leaving a few dollars off by skipping this rarely used rail.