Corsair PSU and Z690 motherboard help

masscrazy · 19 Jun 2024 at 18:31

So I have the Corsiar AX850 and apparently it came with two 12v EPS CPU connectors. I, however can only find one.
Having said that, there is only one 4 pin PSU input for the EPS CPU connector, so not sure how or where the second cable would go. Anyway, cannot find the second one.

My new build and new motherboard need two CPU power connections. Presumably for CPU and the thunderbolt 4 AIC.

How can I solve this problem lol? Apparently the single 12v CPU connector can power 300w or so and so a single connection should be enough, but I'd rather connect the two and be done with it.

Below is what I believe to be the two CPU 12v cables and it seems there are some blank slots (hence why it fits into one of the 10pin sockets perhaps)

Tetras · 19 Jun 2024 at 18:34

What motherboard do you have? I don't think I've seen a recent motherboard that uses a CPU connector to power a secondary thing on the board, they're more commonly a PCI-E 6 or 8 pin than EPS 12v.

If you have two EPS 8-pins together, then you should be fine with only one, but check what the manual says.

masscrazy · 19 Jun 2024 at 19:55

It's the Asrock Z-690 Extreme it has two CPU 8pins. What about using an adapter that converts pcie 8pin to EPS 8 pin?

Tetras · 19 Jun 2024 at 20:05

masscrazy said:
It's the Asrock Z-690 Extreme it has two CPU 8pins. What about using an adapter that converts pcie 8pin to EPS 8 pin?

Motherboard manual says that using ATX12V2 is optional, but ATX12V1 is not, so I'd just use ATX12V1

masscrazy · 20 Jun 2024 at 00:01

Tetras said:
Motherboard manual says that using ATX12V2 is optional, but ATX12V1 is not, so I'd just use ATX12V1

Brill! Appreciate you looking that up, didnt think to do that lol - so it seems just one will be fine, especially considering that i'm adding an i5 13600k whilst undervolting it to keep idle run power low since its a NAS kinda build. Thanks again Tetras!