Is legacy bios worse than UEFI?

[alpharalpha]

I recently got old office pc, (Dell Optiplex390) and installed Win10 on it but it was in legacy, wondering now if it matters enough to switch it to UEFI, just a 500gb hd. Would it improve performance to switch it over to UEFI?

 

[toast0]

It basically doesn't matter once the kernel starts. Might save you some time booting, or might not. Probably won't make up for the time it takes to switch.

 

[pendragon1]

it wont matter for 10, no difference, not even boot time. ive done both on those, i think, touched so many dells...

 

[GotNoRice]

Using legacy bios / CSM will prevent you from installing Windows 11, unless you use a workaround/bypass. But it's really no big deal to bypass the W11 requirements. I think at this point, most of the computers that I have running W11 are still on the legacy BIOS (bypass used).

 

[alpharalpha]

it wont matter for 10, no difference, not even boot time. ive done both on those, i think, touched so many dells...

Oh ok, I saw this post so didn't know, but they don't seem to either.
Serious performance issuse is cause by legacy BIOS.

 

[pendragon1]

Oh ok, I saw this post so didn't know, but they don't seem to either.
Serious performance issuse is cause by legacy BIOS.

idk its some rando on steam forum, not a known problem, just a claim by one guy.
oh and its 5 years old.