Vegan

I inquired and Corsair has indicated that a new PSU will be shipped early next week to me and I should see it in hand a week later. I have used Corsair for quite some time, I have generally been happy but sadly a dud does pop up one in a while. At least Corsair has excellent customer service.

My AX860i has separate OCP for each PCIe cable and EPS12V cable. It can be set from 20A to 40A (default). The AX860i can move power around as needed just like any modern PSU. A few cards with 3 8-pin PCIe power are out there which is why my AX860i comes with lots of cables.

I use a custom fan profile with my AX860i and it seems to solve problems I was experiencing earlier. I had to use the old Corsair Link to make a custom fan profile. I believe the zero fan logic to be a bad design choice.

Sounds like the PSU needs to be cleaned. Usually dust on the fan can make it more noisy etc. More recent PSU modes are now 80 plus gold or better which will pay for themselves over time.

I found using a custom fan on CL was able to stabilize my AX860i from faults. Unfortunately the iCue package cannot do that with my PSU. Thankfully the CL software works with my PSU properly.

I just check with NewEgg can they are also out of stock. I use the more modest AX860i which is not even in the catalog anymore. I am not worried about my PSU, I have learned lots of how it ticks and how to deal with issues. Not sure if Corsair is planning new models?

grab corsair link and set a custom fan profile, that should cure the problem

When I enabled a custom fan profile in my AX860i, it improved on the stability considerably

As I posted in some observations, cranking up fans on everything resolved issues with the red LED coming on and or the PSU refusing to power up for a while (till the machine cooled enough). air flow in from front to rear/top exhaust seems to be the best bet

I have a MSI B350M Bazooka motherboard and it took a bit of work to get the EPS12V cable to connect properly but eventually I was able to get it installed. I have the AX860i which has dual EPS12V cables but this motherboard only needs one of them. The problem with the GA-990FXA-UD5 R5 is that it uses dual ATX12V instead of the EPS12V which is the problem. You are going to have to find a different PSU cable two with ATX12V cables.

CL 4.9.9.3 according to the about box

if your PSU is that hot you may need a larger capacity model to handle the load

I use Corsair Link which accurately reads my AX860i completely

You should be fine, the real difference is simply the AX1600i has a few more connectors for cables Given one cable has a 40A overload I figure each one can handle a video card by itself. Reason for dual cables is mostly due to less capable power supplies. I would abandon mining as valuations are down considerably and there seems to be less interest

Most often this is caused by the UEFI when it detects a problem, it's not the PSU make sure you have front intake fans and rear/top exhaust fans to move air fast also looser memory timings seem to make machines more stable than the BIOS defaults the red light 95% of the time is thermal related I also modified my PSU with a custom fan profile using the Corsair Link which keeps the PSU fan running and that has eliminated problems

I use Link but not iCue to manage my PSU fan

Usually with bottom mounted PSU type chassis, noise is compartmentalized to some extent. Make sure the screws are tight but not overdone. Gromets can be used to add some isolation to some extent but that gets more tricky.

Some advice for this thread: make sure you have lots of fans, front intake fans and rear/top exhaust fans so that heat does not accumulate

make sure you have lots of cool air flowing through the rig noises are more common with 230V than 115V systems

in places I have been with 230V the general noise levels are more noticeable with a wide range of appliances if you want absolute silence, use a power bar with a switch and then cut the power completely

make sure your rig has adequate cooling to prevent the BIOS from thermal triggering a shutdown

I have experienced some shutdowns and I have discovered that the reason for it was nothing to do with the PSU. My machine was shutting down hard, and my AX860i was showing a red LED. I had to cold power reset the machine. I noticed my GTX 1060 also has a zero fan and it seems that as the motherboard became too warm, I believe the UEFI shut the machine down to save it from thermal damage I use a MSI motherboard and MSI Afterburner. So I enabled the custom fan profile and now the video card is constantly active. With that change, my machine no longer shuts down. The active fan on the video card no longer heats the motherboard and the thermal sensors show it is now cooler in operation. Now I am of the opinion that the zero fan idea is misguided. The Corsair Link software can make a custom fan profile for the PSU fan which is still quiet but it also keep the unit cooler which should add to the service life generally.

Interesting as some pics I have seen do not have that resistor. 470KΩ 1/4W

I am wondering if the designer was unable to allow for more room around the screw holes

I have several power supplies that have accumulated, my AX860i has not let me down yet