To Speedstep or not to speedstep?

TickleMyElmo

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• May 7, 2011

• #1

I've over clocked to 4.4 from 3.4 on the 2600k. I wanted more but the temps just wont let me. Anyways, does running the pc with speedstep off have any advantages/disadvantages. Will the chip live longer, will I get better speed, etc. using either way? The temps rise maybe 1-2 degrees higher with it off.
Is there a benefit to using turbo mode or no? Thanks guys.

 

Automata

Destroyer of Empires and Use

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May 15, 2006

• May 7, 2011

• #2

When overclocking, you generally want SpeedStep off. It can cause crashes when idle or coming off the reduced speed. Not worth leaving on.

 

deathman20

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• May 9, 2011

• #3

thideras said:

When overclocking, you generally want SpeedStep off. It can cause crashes when idle or coming off the reduced speed. Not worth leaving on.

Click to expand...

Key word... can I know its different with the new K series CPU's but from last gen backwards depending on your OC you could get SpeedStep to work without it crashing the CPU. If you are really pushing the limits of your system, then it might not work, but if you are giving it some breathing room, then it should work.

Just got to test it to find out if its stable or not, and if you notice the BSOD's you might have to contribute it to the speedstep causing it.

 

X

XrOo

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• May 9, 2011

• #4

Leave it on. I see NO difference in my overclocks. All I do see though is a 16x multi being used when I know the system might need a rest from time to time.

Then again. It depends from chip to chip unless someone proves me wrong.

 

OP

TickleMyElmo

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• May 10, 2011

• Thread Starter
• #5

Man, how do you get up to 4.8? You must have liquid cooling. I have the so called BEST air cooler (Thermalright Silver Arrow) besides the Noctua nh-d14 and at 4.4 I run around 62c-65c under full load small fft's. Man that cooler is HUGE! Anyways, I have to be doing something wrong. I have plenty of fans (Antec 1200).

 

Last edited: May 10, 2011

Janus67

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• May 10, 2011

• #6

While I don't have a SB, I can attest that different chips clock differently with different voltages. If you are running your chip with your vcore set to auto it may be giving more volts that is needed causing your chip to heat up.

 

OP

TickleMyElmo

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• May 10, 2011

• Thread Starter
• #7

I'm using auto voltage. Kinda afraid to adjust it manually without a little help. With my new CPU cooler I ran prime95 at 4.8 for about 2 minutes and it got up to 75c so I stopped it. I def. do not wanna fry my cpu or MB for that matter. I'm also using a little more negative air pressure as I heard using just a little more negative than positive was best.

 

EarthDog

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• May 10, 2011

• #8

In this case... its up to you about speedstep. Asus CLAIMS this has no effect on clocking. Please read this Asus mobo overclocking guide which states that information.

http://hardforum.com/showthread.php?t=1578110

That guide will take your chip to its temperature limits.

 

Last edited: May 10, 2011

deathman20

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• May 10, 2011

• #9

TickleMyElmo said:

I'm using auto voltage. Kinda afraid to adjust it manually without a little help.

Click to expand...

Well could very well be doing more harm to the chip then good keeping it on Auto Voltage when OCing. This is because it gives the chip more voltage than it needs for a given clock.

 

OP

TickleMyElmo

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• May 10, 2011

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• #10

So if I lower it, how many volts per try should I go till unstable?

 

EarthDog

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• May 10, 2011

• #11

Use TurboV to see the actual voltages its using on load, then go set them manually in the bios and back them off one at a time.

 

OP

TickleMyElmo

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• May 10, 2011

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• #12

Which voltages should I lower? CPU voltage, DDR voltage, VCCSA voltage, VCCIO voltage, CPU PLL voltage, and PCH voltage? And should I only go down 1 point at a time or more?

 

EarthDog

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• May 10, 2011

• #13

You need to figure out what was raised from stock if anything.

 

OP

TickleMyElmo

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• May 10, 2011

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• #14

So I should go back to stock everything, write it all down and repost?

 

EarthDog

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• May 10, 2011

• #15

If you do not know what they are and TurboV does not show it, then yup.

 

Tokae

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• May 10, 2011

• #16

Out of the 5 i7s I have OC'd (3 bloomfields and 2 gulftowns) I have left speed stepping on with no ill effects. Manual voltage settings though...

 

OP

TickleMyElmo

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• May 10, 2011

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• #17

Ok, sorry to take so long to get back to ya. Here are my voltages.
Stock voltages are: CPU 1.165/DDR 1.5/VCCSA 0.92500/VCCIO 1.05000/
CPU PLL 1.80000/PCH 1.05.
The only thing different than running it at 4.4 is the CPU voltage, all other voltages stay the same. Running at 4.4 it rises to 1.22. These are all under full load.

 

ChaosInMind

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• May 10, 2011

• #18

Trade off. Really cool temps while system is idle 70% of the time, or a 200Mhz extra OC with full heat and voltage? Hmmmm....