Install of ram was good, Constant Beep after enabling XMP in Crucial DDR5 RAM on Predator PO5-655

d0gg

I installed 4 DIMMs of Crucial DDR5 into my Predator.

Crucial - Pro Overclocking 32GB (2x16GB) DDR5 6000MHz C36 UDIMM Desktop Memory -
Model:CP2K16G60C36U5B (This was the model that was recommended at the crucial website for the PO5-655)

Started up with no issue.

Loaded into Bios. It recognized the 64GB of ram. Then I went in the advanced settings and turned on the XMP and saved and exited.

On the restart it started a constant beep that never stops.

Help. I'm not sure what to do to get out of this.

[Edited the thread to add issue detail to the title]

billsey

The PO5-655 is new enough that we haven't gotten lots of reports on it yet, but the consensus so far is the 5600 is correct for XMP overclocking with the i7 CPU. You do have to have all the memory in the system the same, XMP will be disabled or run at the best shared speed otherwise, which could easily be lower than either speed supports at max.

d0gg

update.

I am back to working again.

the way that I fixed it was I removed video card and pulled the CMOS battery to reset the bios. It allowed me to go back in and everything was fully functional again so it was an issue with that bio setting.

now my next question is, how do I actually set it up so that I can use the Intel XMP setting?

Puraw

https://community.acer.com/en/discussion/714585/install-of-ram-was-good-until-i-turned-on-xmp-predator-po5-655

It takes a while for the RAM controller to train overclocking, give it 5 minutes or more.

StevenGen

https://community.acer.com/en/discussion/714585/install-of-ram-was-good-until-i-turned-on-xmp-predator-po5-655

First make sure that you have the last bios version 1.04 installed for the PO5-655 desktops. The PO5-655 has two different oem cpu's of the following max and recommended Intel memory specs:

• The i5-14400 cpu can operate with a max specified Memory Types of Up to DDR5 4800 MT/s or Up to DDR4 3200 MT/s
• The i7-14700 cpu can operate with a max specified Memory Types of Up to DDR5 5600 MT/s or Up to DDR4 3200 MT/s

The Crucial DDR5 6000MHz C36 UDIMM speed ram might just work with the PO5-655 but it definitely will not work when you overclock it to a faster speed which the cpu is not designed to do and be at, as that is where you are having the problems. If the DDR5 6000MHz C36 UDIMM works without the XMP overclock DO NOT use the XMP setting in the bios, as a working DDR5-6000MT/s is like overclocking a DDR-5600MT/s anyway with the i7-14700 cpu. Good luck and hope this helps you out.

This is the listed ram for the PO5-655 from Acer in its service guide, it does not have DDR5-5600MT/s type ram and especially does not recommend the DDR5-6000MT/s type ram.

If this answers your question and solved your query please "Click on Yes" or "Click on Like" if you find my answer useful👍

d0gg

https://community.acer.com/en/discussion/comment/1304651#Comment_1304651

Give it five minutes making a loud constant beep?

d0gg

I have the 1.04 BIOS installed (Did that before I installed the RAM)

My model has the i7-14700F.

I am learning as I go here. I thought if you set it to over clock that it would use the fastest possible speed if the ram was capable of a higher speed. (Obviously from what you are saying this is incorrect)

I appreciate all of this info, I have been out of the building/upgrading PC game for a LONG time.

Puraw

https://community.acer.com/en/discussion/comment/1304683#Comment_1304683

No, that is a BIOS issue, check StevenGen's comment above.

billsey

Yes, Crucial is notorious for giving you the option to buy their most expensive memory first. In this case you paid for 6000 MT/s memory and it will only run at a maximum of 5600MT/s. It's very possible the memory you bought doesn't have a 5600 MT/s setting in it's XMP profiles, so will only work with XMP off and running at 3200 or slower. Return it and either get the 5600 version, which should cost less, or get someone else's 5600…

Crucial is correct in that their memory will work, they just don't tell you the limitations that make it the wrong choice…

d0gg

https://community.acer.com/en/discussion/comment/1305028#Comment_1305028

So I need the memory to be @ 5600 MT/s for the PO5-655? Then it will work with the XMP?

billsey

The PO5-655 is new enough that we haven't gotten lots of reports on it yet, but the consensus so far is the 5600 is correct for XMP overclocking with the i7 CPU. You do have to have all the memory in the system the same, XMP will be disabled or run at the best shared speed otherwise, which could easily be lower than either speed supports at max.

d0gg

https://community.acer.com/en/discussion/comment/1305386#Comment_1305386

I was looking at the specs on the ram that I got and there are 2 models of the 6000 MT/s SDRAM. One mentions backward compatibility with the XMP profiles one does not (guess which one I bought =)

I just ordered (and received) the SDRAM with 5600 MT/s that has backward compatibility, crucial brand.
2- 16GBx2 32GB kits.

I'll post back when I get the chance to install and test with the XMP turned on in the BIOS.

d0gg

https://community.acer.com/en/discussion/comment/1305386#Comment_1305386

Everything is working as it should!

The Crucial 5600 activated properly and shows the proper speed in the BIOS after I activated the XMP.

Thank you and everyone else that gave info, support and pointers to help me through this!

billsey

Great news! Glad we could help.