Windows 7 won't utilise 100% CPU

[Fozzie]

The resource metre is up and down like a whores drawers.

Back on XP and Vista it stuck at 100% solid.

BOINC performance suffers.

Can't see anything to change anyone seen this, did a quick search but no hits.

[IronBits]

Check CPU throttling. Disable it in the BIOS so the OS can't mess with it.

This will get you started in the right direction - speed step: disable

Google search: windows 7 cpu throttling
http://www.google.com/search?hl=en&as_q=windows+7+cpu+throttling&as_epq=&as_oq=&as_eq=&num=10&lr=&as_filetype=&ft=i&as_sitesearch=&as_qdr=all&as_rights=&as_occt=any&cr=&as_nlo=&as_nhi=&safe=images

http://www.sevenforums.com/hardware-devices/8871-w7-cant-stop-cpu-throttling.html
http://www.overclock.net/windows/503828-w7-cant-stop-cpu-throttling.html
http://www.overclock.net/intel-cpus/386227-cpu-multiplier-keeps-jumping.html
http://social.technet.microsoft.com/Forums/en-US/w7itproperf/thread/b4447bbb-fec4-457f-9ed2-d87965fd6592

Google search: windows 7 cpu throttling disable
http://www.google.com/search?hl=en&lr=&q=windows+7+cpu+throttling+disable&aq=f&oq=&aqi=

http://www.tomshardware.com/forum/251034-28-throttling-intel_speedstep-disabled

* http://74.125.155.132/search?q=cache:OBMhqA_guLQJ:smallvoid.com/article/winnt-cpu-state.html+windows+7+cpu+throttling+disable&cd=8&hl=en&ct=clnk&gl=us

[Fozzie]

Nothing seems to make any difference.

[IronBits]

Check your power options in Screen Saver, Change Power Settings, select High Performance. Personalize from there...

[Fozzie]

Yep been there, there doesn't seem to be the optrion for min and max like many have said maybe that's Vista not 7.

Machine is off until i can get it sorted.

Everything else works fine.

[gopher_yarrowzoo]

#gopher@somewhere: update uctt
Updating Universal Computer Tweaking Tool aka "The Mallet"...
update successful should now work on Windows 7..
Windows Vista Users Please note: This will destroy your copy of windows vista and install Knoppix 6 instead you should notice a 1000% increase in available memory and processor availabilty. Okay so it's not as shiny and Games won't work but that's not what your meant to use this machine for....
Windows 7 Users Please note: This is still in beta (much like Windows 7) so may cause a few problems...

*hands the updated uctt to Fozzie*
Enjoy..

[Fozzie]

all combinations of all sett8ings in the BIOS and in Power control panel.

Still no go.

Updated BIOS to the latest but it seem it is a dead end.

I cannot get Windows 7 to allow me to run the CPU at 100%.

[Shish]

I had this or similar but it depended on what DC prog I ran. Perf meter just seems to work faster than before. Try loading something that overloads your computer cpus and is multi threaded as you now get 2 threads per cpu core so you may not be actually running 100% every microsecond.

[Paratima]

Fozz, try pinging PCZ on this subject. He was the one, in another thread, who said 7 was running right for him. Maybe he knows something... :eek:

[Digital Parasite]

I have Windows 7 Pro 64bit running just fine, it will happily use 100% of the 4 cores when running any app like BOINC or other.

Sounds to me like it is more a power settings/CPU low power state thing that if you can't disable it in the BIOS, Windows might just do its own thing.

Jeff.

[Fozzie]

I have disabled it all in the BIOS.

It seems to run at 100% on Prime95, but when you look at the performance it is way down on what it should be it ran better on Win XP.