Z390M bios update (Losing performance i7 9700k)

[Hyguito]

hi guys, so currently i have a gigabyte z390 m gaming.

 

i've updated the bios to the last one F9m from the f7 version and doing some cinebench runs i saw that i lost about 40 points on it :S

 

is it a normal thing? should i go for the f7 bios again to recover my performance loss?

 

(I'm running a i7 9700k 5ghz/4.7cache)

 

https://www.gigabyte.com/br/Motherboard/Z390-M-GAMING-rev-10/support#support-dl-bios bios versions

[CommanderAlex]

Quote

Update CPU microcode SA-00295 to solve potential security vulnerabilities in CPU, please refer to more information:

This is probably why to cover up those loopholes. When they fixed Spectre and Meltdown CPU vulnerabilities, Intel CPUs took a marginal performance hit.  

[Hyguito]

1 minute ago, SpiderMan said:

This is probably why to cover up those loopholes. When they fixed Spectre and Meltdown CPU vulnerabilities, Intel CPUs took a marginal performance hit.  

is it worth to keep it updated or should i go back to the f7 version?

[CommanderAlex]

2 minutes ago, Hyguito said:

is it worth to keep it updated or should i go back to the f7 version?

I wouldn't really worry about a 40 pt loss on a Cinebench benchmark run. There are also other variables at play such as background tasks and temp headroom for the processor to boost, unless you have a manual overclock on the board (or using auto). 

[curiousmind34]

3 minutes ago, Hyguito said:

is it worth to keep it updated or should i go back to the f7 version?

Just keep it.

[Hyguito]

1 minute ago, SpiderMan said:

I wouldn't really worry about a 40 pt loss on a Cinebench benchmark run. There are also other variables at play such as background tasks and temp headroom for the processor to boost, unless you have a manual overclock on the board (or using auto). 

i have a manual overclock

[CommanderAlex]

1 minute ago, Hyguito said:

i have a manual overclock

I would still just leave it alone and keep using the latest BIOS. 

[Guest]

Bump your cache to 4.8ghz see if that helps.

[Mister Woof]

I don't know if you can un-do microcode updates by dropping back BIOS revisions, but someone correct me if I'm wrong.

 

Ultimately you'll lose a small amount (i lost about 200 points in CBR23 which was around 2% off my 8700k from a 2018 post-spectre update to the latest one from 2019) but it won't really impact you TOO much.