Disabling Speedstep

Could anyone plese help me to get my processor (T9400) to stay at max speed?! I want to have stable max performance when playing games.
Im running on Windows 7 x64/Vista x64. Up to date I tried with RM CPU clock fixing the CPU just on one max multiplier, x9.5, but it didn't work. Here I wanted to thank flipfire for the great undervolting guide. I search several forums but couldn't find a solution.
Thanx.

P.S.: If you're wondering how could I use half multipliers in RM CPU clock, I found a way and it works: http://forum.rightmark.org/topic.cgi?id=6:1770

 

you dont need to disable speedstep because the CPU automatically ramps up when you do anything CPU intensive like playing a game

 

Thats the problem, because when e.g. when a video or situation, that is not so CPU intensive, etc. occurs in the game, it lags and thats speedtstep lowering speed. And other things - when I'm on AC I expect max performance without interuption and thats not possible with speed step.

 

huh that shouldnt happen normally
what are specs in your laptop

 

Are you sure there is no setting for that from the manufacturer? There is on my Dell that allows you to select which processor speed to stay at or if you want to let it fluctuate.

 

My machine: Compal KHLB2 T9400,ATI HD4650 512MB,4GB DRR3.
Yeah it doesn't happen often on performance intensive applications like games, but these applications do not always need 100% CPU (honestly, minimum times) - what they need in these situations is a max performance potencial and this is with speed step availeble, but with a slight (in my peception big) lag.
No nothing comes from the manufacturer - normaly a slightly more advanced BIOS would do it, but this notebook BIOS is .
What kind of application do you have from Dell Trottel?

 

That was my complaint with T9400 too. Its speedstep was laggy. In other words, the CPU was very late with boosting the performance.

I upgraded my CPU to a T9900 and that lag disappeared (perhaps because of an improved revision). The CPU jumps to the full speed even there is a very slight amount of work which makes it much more snappy.


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If you really think SpeedStep is the problem, you can use RMClock to lock the processor out of it's lower SpeedStep states...

 

As I mentioned earlier I tried RMclock but nothing happend. I'm using Win7 x64 and Vista x64.

 

GO to Windows 7, set the power scheme to maximum performance.

 

Does that solve the problem? (I haven't tried Win7 yet.) In Vista, that is not a solution. CPU still goes to the lowest frequency level if there is no work.


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Rightmark CPU Clock Utility is recommended. Great application for CPU speed control.

 

in vista, you can configure each power profile to have certain cpu ranges. just set them to "from 100% to 100%" instead of "from 0% to 100%", and it's solved.

not, that it should happen. speedstep should never be a problem. and "i need max performance" is most likely, uhm, no. but lags shouldn't happen. never experienced one. weird.

 

never had a speed step problem here, even with overclocking. I just turn it off in the bios directly though when I am testing.

Id check if your bios has it so you know its done and not even need to worry about some kind of software that may/may not work.

 

Can you make sure it's the CPU's speedstep settings that's causing the problem, not the more likely GPU's own power saving feature that is causing the problem.

 

I'm on Win7 x64, of course on high performance and processor states are set to 100%, but it doesn't keep the CPU on 100%.
I looked on the GPU and catalyst setingsis - there are OK.
It isn't actually a big problem but I want to be able to set, when I want to, my PC on "real high performance".
My poor notebook BIOS doesn't have the function to disable speedstep

 

If you disabled SpeedStep in BIOS, it would lock your processor to the lowest multiplier, not the highest.

 

I'll disagree and say your wrong only on the basis that all my laptops and desktops it stays at the highest multi aka the cpus default multi, speed step is a function to LOWER the mutli to save power/heat thus turning it off means it will be no longer lowering the multi down to save power/heat and the cpus stock speed will be in effect.

Also think about the 100's of overclockers we have on the forum that say turn it off for overclocking, if it lowered there cpu multi they wouldnt be turning it off as it would be taking 1 step forward 12 (speed)steps back.

 

Yes i agree thats what its supposed to do, but what Mushroom said is true, it downclocks it for Dells. They are weird.

 

I shouldn't have edited my post then

At first I said maybe it is different for a different model because I know Shroom is competent, but then I thought to myself that I had never seen/heard of it happening like that before so I took that out.

 

Hmm, I never knew that. My last 4 computers (only one of which is a Dell) lock the CPU at the minimum multiplier when SpeedStep is off, rather than the maximum. This includes desktop systems as well as notebooks. Curious...

Ah well. I apologize, then, for spreading misinformation.

 

It must be a random function of the bios. Any retail desktop motherboard will keep it at the maximum multiplier.

 

Hi, I repeat my question from the beginning of this thread. Can anyone help my get rmclock or any other utility to fix my CPU speed at maximum? I'm using Win7 x64.

 

Try using Crystal CPUID. Under its multiplier management, you can adjustment the points at which you want the CPU to go to a certain speedstep or you can just lock it at the highest multiplier.

 

Thanx for the help. I tried... but it didn't work too. When I tried to set a fixed multiplier it didn't stop speedstep and even when I set the max multiplier windows crash (blue screen tec. ... in Vista x64 an Win7 x64