What do I do about speed step?

[N00Bster]

So my computer will only boot with nullcpupowermanagement and that seems to be cause my fans or CPU to run faster/louder. So I think I need to patch my bios but I'm not sure. My mobo is a gigabyte z68xp-ud3p and from reading it looks like most gigabyte monos don't need to be patch bios. So I have no idea what's going on my fans just happen to get louder.

 

[nobodynose]

So my computer will only boot with nullcpupowermanagement and that seems to be cause my fans or CPU to run faster/louder. So I think I need to patch my bios but I'm not sure. My mobo is a gigabyte z68xp-ud3p and from reading it looks like most gigabyte monos don't need to be patch bios. So I have no idea what's going on my fans just happen to get louder.

Have you tried installing the Sandy Bridge Core i7 SSDT from Multibeast? I'd start there. (attached image is from Multibeast v6.10).

 

[N00Bster]

Have you tried installing the Sandy Bridge Core i7 SSDT from Multibeast? I'd start there. (attached image is from Multibeast v6.10).

So I would install that than get rid of the nullcpupowermanagement.ketx and boot and see if I boot up, if not boot with CPU=1 and delete the SSDT and reinstall the nullcpupowermanagement ?

 

[nobodynose]

So I would install that than get rid of the nullcpupowermanagement.ketx and boot and see if I boot up, if not boot with CPU=1 and delete the SSDT and reinstall the nullcpupowermanagement ?

Yes, that's pretty much what I would try... Rather than get rid of NullCpuPowerManagement.kext, I would rename it or move it somewhere out of the way but accessible from your boot drive just in case you need to put it back. You should have a Unibeast boot USB stick on hand -- if something goes awry you'd be able to boot from it and get to your boot drive from the command line to put things back in place. The safe mode flag (-x) may also come in handy.

Here are a couple of references on SSDT's, as well as a link to the SSDT subforum. Some of the info mentions Lion or Mountain Lion, but it should still be applicable to Mavericks as well:

http://tonymacx86.blogspot.com/2012/05/1074-power-management-and-sandy-bridge.html

http://macmanx86.blogspot.com/2012/05/customizing-ssdt-power-management.html

http://www.tonymacx86.com/ssdt/

Another possibility might be to upgrade your BIOS to the UEFI (beta) BIOS from Gigabyte. That tends to simplify a lot of things (not the least of which is that you can eliminate the DSDT, though you still need the SSDT from Multibeast for full SpeedStep functionality). However, proceed with caution here. Flashing the BIOS is always a little risky. One good thing is that there is a way to go back to legacy BIOS if UEFI doesn't work for you. I upgraded all three of my Gigabyte Z68 motherboards (GA-Z68MA-D2H-B3 x2 & GA-Z68M-D2H) to the UEFI (beta) BIOS with no problems. Here are a couple of links with more information:

http://www.tonymacx86.com/general-help/62361-official-method-flash-back-gigabyte-bios-efi.html

http://forums.tweaktown.com/gigabyte/28441-gigabyte-latest-beta-bios.html

 

[N00Bster]

my pstates are 16 and 34 does that mean speed step is working?