Help with X5690 Processors

[Vossy]

Hello,

I recently upgraded my supermicro X8DT6 motherboard with 2 x 5690 Processors.

I thought these CPU had 6 cores but 12 threads as below only showing 6 threads for both.

What I am missing?

 

tower-diagnostics-20220419-0844.zip

[itzfantasy]

Is hyperthreading enabled in the BIOS configuration?

[tjb_altf4]

Yep hyperthreading looks like it is disabled @Vossy

 

lscpu output from diags:

Architecture:                    x86_64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Little Endian
Address sizes:                   40 bits physical, 48 bits virtual
CPU(s):                          12
On-line CPU(s) list:             0-11
Thread(s) per core:              1
Core(s) per socket:              6
Socket(s):                       2

Edited April 19, 2022 by tjb_altf4

[tjb_altf4]

If hyperthreading is enabled in BIOS, it might be a result of Spectre-Meltdown mitigations, in which case this thread might help:

 

[Vossy]

Thanks all thats exactly what it was.

Strange cause the last CPU had it and I didn't change BIOS.

Thanks all again