• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

Intel Speedstep stopped working

Vertigo

Vertigo

Vertigo

Soldato
Joined
28 Dec 2003
Posts
16,664
Ok this is weird.

Have my i7 2600K overclocked but only by changing the turbo multipliers so, when loaded, it runs at 4Ghz regardless of how many cores are in use. When not loaded, Speedstep should kick in and clock it down to 1.6Ghz (or whatever it is).

This was working fine but I've now noticed that the CPU is stuck at 4Ghz all the time, even when I'm not running anything and my processor usage shows at 0% in task manager.

Anyone know why it's not clocking down?
 
Check the performance mode in power options. If its set to high performance that sets a min proc state of 100%.
 
Interesting, didn't realise that option was there.

That said, I've always had it on high performance and Speedstep was working fine before so that can't be it. I tried reducing the minimum processor setting to some low values and finally 0% but it's made no difference.

Oddly, I now notice that the CPU seems to be dropping back to 3.7Ghz when idle. What on earth?!
 
Other than an altered bios setting, nothing springs to mind.
What program are you using to read the speed? It could just be reading it wrong. Sometimes happens to me in cpuz with certain bclk/multi combo's.
 
Yeah using CPU-Z. Seems to be flicking between 37 and 40 multipliers.

Haven't changed anything in the BIOS to my knowledge. Not sure whether the power management setting actually affected anything or not - could have done but it should be clocking down much further than 3.7Ghz.
 
new cpuz 1.62 shows my 2600k always at 4.4ghz, went back to 1.61 and its downclocking perfectly!!!!

this is my 3rd post today about cpuz 1.62 same issues lol
 
Have you tried disabling it and using C1E? I find C1E to be completely reliable. I found speedstep to be a total flop.

EIST/Speedstep follows windows I believe. C1E just clocks and downclocks due to load requirements. My 3570k idles nicely at 0.88V 1.6GHz and instantly goes to whichever speed it requires.
 
You must log in or register to reply here.
Back
Top Bottom