I urgently need to switch off hyperthreading on my HP Pavilion DV6 core i7 720qm running Windows 7 Home Premium 64bit!
As I need to run a very processor intensive simulation software that only uses one thread and is taking minutes or hours for certain simulations, I am hoping to find a way to use at least a full core and not a half one.
I am not so lucky with my InsydeH2o BIOS F13 which has a only a handfull of adjustment options like system time and date
but certainly no hyperthreading (HT)
I know you can turn off processors in the msconfig but that is not the same - windows still devides the remaining physical cores...
Booting into EFI shell would be another options as HT could be switched off there but I don t know how to add the shell to the bootmanager (how to configure easyBCD and/or GRUB?). Of course booting into EFI is not a visible option in my bios - even though the BIOS is, I understand, completely UEFI based and only emulates the old BIOS interface!
Maybe there is a registry key tweak or something else you guys know. I am sure there must be loads of programs/games out there that would benefit from a disabled HT!
Here is a link to my notebook drivers
and specs: Select software and drivers HP Pavilion dv6-2090eo Entertainment Notebook PC - HP Customer Care (Australia - English)
I don't expect anyone can fix this (I spent already two weeks on this) but if you have an idea please let me know and post so others can see it too..
PS: I even looked into editing this BIOS which can be done with some effort and risk but even than it seems dozens of options but no hyperthreading.. only "core multi processing" which is likely just switching off cores but not HT. Info on InsdyeH2o BIOS editing are here: Insyde BIOS modding (dv4,dv5,dv6,dv7 at least)