When my AM4 system started getting memory erros, I decided to switch to AM5 – I was shocked that the 9950X3D performed so much worse than my previous 5950X. I figured out, that the X3D setting in bios drastically recudes my CPU performance in both Timespy (11k instead of 17k) and Cinebench (16k instead of 42k) – is this setting worth it for gaming performance? Did I do something wrong (do I need another setting change in bios for example)? I am using Win11, GKILL trident Z5 neu 2x32gb 30-40-40-96, MSI X870E Tomahawk (with my old MSI 4080 suprim)
6 Comments
Which setting have you changed ?
The X3D Boost setting in UEFI disables the CPU DIE which has no access 3D-V Cache and disables SMT. Which cuts (on a chip with two CCD) roughly 3/4 of raw performance. So your 16C/32T CPU is now just a 8C/8T CPU.
That setting only benefits specific games
You are basically disabling half of the cores and turning off SMT when you have that “gaming” mode on.
They have already made a driver that does this for you in windows when a game benefits from it so there is no need to have this on in the BIOS and seriously nerfing your CPU.
Also, even before the driver most people wouldn’t have recommended using this even for gaming. Only if you played like 1 or 2 games only and you knew they benefitted you might want to use it but even then, it could actually be worse since your 1% FPS could actually be worse since the extra cores aren’t taking care of some windows crap running in the background.
I think it disables the virtual cores.
unfortunately cinebench doesn’t support 50 series ðŸ˜