F5F Stay Refreshed Hardware Desktop Issue with sending data in XMP version 1/2 after upgrading to a 5090

Issue with sending data in XMP version 1/2 after upgrading to a 5090

Issue with sending data in XMP version 1/2 after upgrading to a 5090

A
alejozam
Junior Member
Find
10
08-01-2025, 08:48 AM
#1
Hi everyone, I’m doing well and looking forward to the weekend. I recently switched to a 5090 STRIX and upgraded my power supply from 1000W to an ASUS Loki 1200W. After the changes, my PC keeps looping in POST before entering BIOS safe mode, even when I try XMP profiles. It only boots when I set the RAM to 4000MHz. I’ve cleared the CMOS and confirmed the BIOS is current, but nothing’s working. I haven’t tried booting XMP with a single stick yet; if it does, I’ll have to pick between 32GB at 5200MHz or 64GB at 4000. Since the 5090 is expensive, I’d rather avoid buying new RAM. My setup includes a Z790 STRIX, an i9 14900k from ASUS TUF 5090, 64GB Corsair Dominator 5200MHz DDR5 (on ASUS QVL), a 2TB Gen5 Firecuda 2TB master, and a 1200W ASUS Loki PSU. I’m not sure if changing the RAM speed would make a difference, but I have a 32-inch Samsung Odyssey G8 at 240MHz. Let me know your thoughts! Thanks, Nathan
Reply
Reply
A
alejozam
08-01-2025, 08:48 AM #1

Hi everyone, I’m doing well and looking forward to the weekend. I recently switched to a 5090 STRIX and upgraded my power supply from 1000W to an ASUS Loki 1200W. After the changes, my PC keeps looping in POST before entering BIOS safe mode, even when I try XMP profiles. It only boots when I set the RAM to 4000MHz. I’ve cleared the CMOS and confirmed the BIOS is current, but nothing’s working. I haven’t tried booting XMP with a single stick yet; if it does, I’ll have to pick between 32GB at 5200MHz or 64GB at 4000. Since the 5090 is expensive, I’d rather avoid buying new RAM. My setup includes a Z790 STRIX, an i9 14900k from ASUS TUF 5090, 64GB Corsair Dominator 5200MHz DDR5 (on ASUS QVL), a 2TB Gen5 Firecuda 2TB master, and a 1200W ASUS Loki PSU. I’m not sure if changing the RAM speed would make a difference, but I have a 32-inch Samsung Odyssey G8 at 240MHz. Let me know your thoughts! Thanks, Nathan

Reply
Reply
M
Metilwulf
Member
Find
70
08-01-2025, 08:48 AM
#2
Have you experimented with setting the PCI-E gen to 4 instead of 5? In principle, you might attempt to rely solely on JEDEC timings rather than activating XMP, as 5200 supports those options. It’s unclear if your memory would need a higher DRAM voltage (beyond the standard 1.1v) when running at 5200 with JEDEC timings.
Reply
Reply
M
Metilwulf
08-01-2025, 08:48 AM #2

Have you experimented with setting the PCI-E gen to 4 instead of 5? In principle, you might attempt to rely solely on JEDEC timings rather than activating XMP, as 5200 supports those options. It’s unclear if your memory would need a higher DRAM voltage (beyond the standard 1.1v) when running at 5200 with JEDEC timings.

Reply
Reply
H
HermanZ07
Member
Find
194
08-01-2025, 08:48 AM
#3
Hi Tetras, thanks a lot for your response. I attempted to force gen 4 but it didn’t work. JEDEC is a new concept for me, so I looked it up and managed to get the RAM up to 4400. I guess I’ll have to admit defeat, as Google says there won’t be a noticeable difference between 5200 and 4400 in gaming. I’ll think about getting new RAM in a few weeks once my wife forgives me for the 5090! Thanks again.
Reply
Reply
H
HermanZ07
08-01-2025, 08:48 AM #3

Hi Tetras, thanks a lot for your response. I attempted to force gen 4 but it didn’t work. JEDEC is a new concept for me, so I looked it up and managed to get the RAM up to 4400. I guess I’ll have to admit defeat, as Google says there won’t be a noticeable difference between 5200 and 4400 in gaming. I’ll think about getting new RAM in a few weeks once my wife forgives me for the 5090! Thanks again.

Reply
Reply