MSI MPG x870e Carbon WiFi Owners

[sativa]

Update to the latest bios, and latest AMD chipset drivers is the first step.

Note, when the motherboard "first" boots on a new bios it needs to do memory training, thereafter that initial boot, subsequent boot times should be lessened i.e. quicker.

Check there are no old SATA/HDD which are slowing things down.

 

[Cenuij]

Just got my system up and running but the boot times are really slow, like from a hd 10 years ago.

9800x3d, sn8100 ssd and 32gb 7600 ram.

Any ways to speed this up?

Enable "Memory Context Restore" in the BIOS, remembers the memory training for X weeks or until you change a setting in the BIOS that requires re-training.

 

[Deluxe1]

Yeah it's all sorted now

 

[madman045]

New BIOS released today

7E49v1A64 2025-09-09 13.08 MB

• Description:
  AGESA PI 1.2.0.3g updated.
• Improved compatibility of the Ryzen 8000 series CPU.

 

[Cenuij]

Anyone in this thread using a 5080/5090?

I seem to have a problem reliably getting this board to boot without the main PCIe slot sometimes being stuck at PCIe gen1.1, 2 or 3

 

[Webble09]

Anyone in this thread using a 5080/5090?

I seem to have a problem reliably getting this board to boot without the main PCIe slot sometimes being stuck at PCIe gen1.1, 2 or 3

I’ve used a 4080 and upgraded to a 5090 on my board and had no issues on boot. Have you tried re-seating the card, update drivers etc and that your power supply is sufficient for a 5090? I’m not sure what you mean about the PCI slots as the card should only be in one slot (the one with the release button clip). But be aware of where you place your storage m.2 if using as per Hankscorpio’s post, but this should not intefer with boot: -

No. But when you populate the 2nd gen5 slot (m2_2) the GPU lanes will be halved to 8x. Limitation of x870e and all boards like this face CPU / GPU lane sharing except the ASRock boards which only have a single m2 gen5 slot. Unless you need the sequential read write speeds you'd be better off using a gen5 m2 in slot 1 and a gen4 m2 in slot 3 or 4 which use the chipset and don't share lanes with the cpu

 

[Cenuij]

I’ve used a 4080 and upgraded to a 5090 on my board and had no issues on boot. Have you tried re-seating the card, update drivers etc and that your power supply is sufficient for a 5090? I’m not sure what you mean about the PCI slots as the card should only be in one slot (the one with the release button clip). But be aware of where you place your storage m.2 if using as per Hankscorpio’s post, but this should not intefer with boot: -

Yeah, always avoided the m2_2 - but I have all the other m2/nvme slots in use, psu not an issue @1300

The issue is somewhat better after turning spread spectrum modulation on, so maybe a lot of noise on the board traces idk, if it's not connecting at gen5 now a reboot usually resolves that

 

[Ascendancy]

Anyone in this thread using a 5080/5090?

I seem to have a problem reliably getting this board to boot without the main PCIe slot sometimes being stuck at PCIe gen1.1, 2 or 3

Yeah I had intermittant issues with this way back at the start of the year. The fix was to enable the FCH Spread Spectrum option in the BIOS and it's worked fine ever since.

 

[VincentHanna]

Yeah I had intermittant issues with this way back at the start of the year. The fix was to enable the FCH Spread Spectrum option in the BIOS and it's worked fine ever since.

100%, this is the same fix I use on the MSI x870 Tomahawk.

Search for it in the BIOS and force enable.