Calling Sandy Bridge Overclockers - To SpeedStep or not to?

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Lord Nemesis

Lord Nemesis

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Sandy Bridge Overclockers, I would like to know whether you guy's have speed step enabled or not?

I am currently running my i5 2500k @ 4.5GHz, 1.2V for 24/7 on an Asus P8P67 Deluxe. The overclock is completely stable and load temps on the cores do not cross more than 58~59 deg (with TR Venomous X) in any thing other than the most stressing programs like Prime 95.

I had disabled speed step in the EFI prior to overclocking (as I did with my previous Q9550).

Would it be a good idea to enable speed step back? Since I have manually set the vcore to 1.2v, would speed step bring down the voltage appropriately for the lower clocks? Also would it be able to bring up the voltage back to set value fast enough when the CPU steps up to 4.5GHz.
 
if you are absolutely stable and by that i mean 3+ hours of prime95 blend test, then i wont advice you to enable EIST. 4.5 ghz on 1.2 v is an awesome OC mate. Moreover by enabling EIST your clocks will come down to 1.6ghz at idle but your voltages wont as you have manually set voltage to 1.2v in EFI. But this is to the best of my knowledge & i dont know if EIST brings down the manually set voltage also or not with the newer bios revisions.

BTW just out of curiosity what is your ambient temperature??
 
I'm not sure about voltages, but on my M-Pro board, speedstep automatically takes things down to .96V and 1.6GHz at idle. I see no reason why you shouldn't enable it, lower power consumption is always a good thing. Speedstep has been around for a more than a decade now and I'm pretty sure Intel has it perfected.
 
stalker said:
[H]forums is a goldmine of information.
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Agreed. I have another one bookmarked from [H]:

Official ASUS BIOS and Program Updates

But did you notice there has been no posts from Gary Key on BIOS updates since a while? More like he went AWOL. And the fact that Gigabyte has completely stopped P67 boards to make way for the Z68 ones - something very skeptical here from Asus' end. :(
 
Gannu said:
Agreed. I have another one bookmarked from [H]:

Official ASUS BIOS and Program Updates

But did you notice there has been no posts from Gary Key on BIOS updates since a while? More like he went AWOL. And the fact that Gigabyte has completely stopped P67 boards to make way for the Z68 ones - something very skeptical here from Asus' end. :(
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I don't follow that thread since overclock.net has a thread dedicated to my board. Get my updates from there.
I think they have threads for the other boards too. Again, very comprehensive on information.

I just check ftp://ftp.asus.com.tw/pub/ASUS/mb/LGA1155/ once every 2-3 weeks for BIOS updates.
 
Gannu's article is good. Guess disabling SS will not hamper the range, probably would increase component longevity. It should be able to ramp up vCore as soon as load is felt.
 
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