Question Upgraded CPU, significantly reduced speeds

[cc222324]

Hello! This weekend I upgraded the CPU in my desktop from a Ryzen 5 3600 to a Ryzen 7 5700G. Since then, the machine has been incredibly slow. While viewing the Performance tab in Task Manager, the CPU speed does not surpass 3.8 (1/10 of the CPU). I'm hoping this is a setting somewhere that needs to be tweaked, but I really know enough about this stuff to be dangerous, so I'm hoping for some help!

Config:

• B450 Tomahawk Max Motherboard
• Bios version - E7C02AMS.3HO (updated prior to install of CPU, no settings have been changed)
• GeForce GTX 1660 Super
• SSD 980 NVMe M.2 1TB
• Ryzen 5700G
• 4x 8GB Corsair Vengeance RGB Pro
• Windows 10 Home

Also, I reinstalled Windows last night (it took from 10PM-10AM this morning w/ updates). Kept apps and files
Thank you!

 

[Eximo]

You might try clearing the CMOS again. Your BIOS may be up to date, but it was still configured for your previous CPU. Clearing it should reset it to defaults for the new CPU.

3.8Ghz is the base speed, so you might want to look into the CPU clock boost settings and double check that Windows will allow the CPU to boost. Generally this means checking the power plan in Windows. Balanced and Performance should let boost operate.

 

[Lutfij]

Welcome to the forums, newcomer!

Did you clear the CMOS after you'd verified that the BIOS was successfully updated to the latest version? In all honesty, if you went with a Ryzen 5600(or the x) without the APU route, you'd have been in a much better spot. As it stands you just moved up the table with a different numbering on the CPU.

Link to the ram kit you're working with?

 

[cc222324]

Thank you both! I pulled the CMOS battery and restarted the machine and there was no change. Power settings are set to High Performance. I'm not 100% sure what to look for in the CPU clock boost settings - is there something in particular I should be looking out for?

I have 2x this set of RAM - https://a.co/d/aE4PZ31

 

[cc222324]

Other things I've tried -

• disabling TPM
• swapping back to old CPU (same results, slightly different cap)
• downgrading to BIOS firmware 7C02v3A

MSI forum thinks it could potentially be a sensor on the motherboard?

 

[Unolocogringo]

Do a hard reset.
Enter bios and load bios defaults. (F5)
Save and exit.
Shut down
Disconnect power cord.
Remove battery.
Press power button several times.
Short CMOS clear, jumpers,solder points , for 10 seconds.

Remove one set of ram.
Only have a matched pair installed, from the same package. in 2nd and 4th slot from cpu.
Replace battery and boot computer.
Give it time to retrain memory, it can seem to take forever, be patient.
Some train and boot, and some train and reboot a few times.
Let it do its thing.
Once it boots go back into bios and set memory speed etc.

Now this second set of ram could be a problem.
2 kits may or may not work nicely together.
Once you have it up and running with one set , you can try the other set.
Mixing memory is a gamble.
Some times it works.
Some times it works at much slower speeds/timings.
some times it fails all together.
And some times it seems to work but you are chasing bugs and instability issues forever.

 

[cc222324]

Thank you so much for this. I tried it, and no go.

I ended up replacing the motherboard with a B550 Tomahawk Max and it worked! I'm not sure if I somehow damaged the motherboard while swapping the CPUs or if there was a compatibility issue, but I'll take it.

Thank you everyone for your advice!

 

[Karadjgne]

Most likely bricked the bios. AMD chips generally do not take big, direct jumps in bios very well, it's generally advisable to update bios in stages, after reading the bios notes associated with each revision. You went from a 3600 bios to a 5700G bios, and the APU's also require the media files, which aren't required in the standard non-G bios.

Essentially, (for instance) the 3600 bios had code ABC. The latest version had instructions to change ABC to XYZ. The upgrade to the 5000 series contains instructions to change XYZ to DEF, but won't contain instructions to change ABC to DEF. By skipping one bios update, you get a current bios, with all the updates required, all the ram tables, all the cpu-id etc, except it's still stuck with an ABC code.

The B550 comes with a bios that's already fully 5000 series ready, it got updated at a factory level, so does not contain ABC or having any record of ever needing it, it's starting out as DEF.

 

[cc222324]

OK - that makes sense. I have to do another one of these swaps (almost identical setup, just with an upgraded GPU). Would you suggest upgrading the firmware of the BIOS sequentially through each version until I get to the current one and then swapping out the CPU? Or would that just be guaranteed frustration and I might as well resign myself to purchasing another B550?

Thanks for the explanation!

 

[Karadjgne]

Read the notes/descriptions. You'll see every few versions that it might require updating to a specific version first, or especially if you see a version that says you cannot go back, make sure the bios is upto latest before moving to that one. Some bios you can easily skip, they are just updates or added stuff that'll be included in a newer version, but with long updates like bringing a B450 chipset to current, you'll need to make sure you have all your ducks, not just if they are lined up.