Overcklock CPU with turbo mode on?

[matvey]

wolfram23 wrote :

That's one way to OC it... there's others.

I don't suggest keeping IMC/VTT on auto. It has as much effect on stability and temps as Vcore.

It's also my experience that speed step, C states, spread spectrum etc are good to keep on. Call me crazy but I love the idea of turbo boost. Hence why I'm OCed to 3.7ghz with turbo on (for 4.25ghz max). If the OP wants to do this, I recommend disabling LLC as well. LLC is good for a "straight" OC like what bavman posted. That sort of OC is nice and clean (the 200 base clock makes 1600mhz RAM easy).

Turbo boost is more efficient tho. I've had my CPU at 4ghz and I found it only faster in benchmarks, but with 3.7ghz and turbo on it's cooler and for those single threaded apps, definitely going to be faster.

I OVERCLOCK MY INTEL I7930 FROM 2.8 TO 3.8 Ghz, and if i turn on the turbo mode in the bios is it going to be a overkill for my core and do i need to change my voltages after that?

 

[wolfram23]

Yes, you would.

Like I said, turn off Load Line Calibration. The voltage value you set will be higher than you might expect, however, with LLC off the voltage will drop under load. I found that comparing the same OC (175 base clock with turbo on) with LLC on and off, having it off dropped temps by 3C.

3.8ghz is pretty high. My guess is you're either using 200 base clock (x19) or else maybe 180 or so. With turbo on, 180 is definitely the upper limit. I've been stable at 178 but not 180 yet (of course, it is a different CPU).

IMO, try 170 base clock with turbo on and see if you can get that stable, then work your way up from there.

 

[matvey]

Yes, you would.

Like I said, turn off Load Line Calibration. The voltage value you set will be higher than you might expect, however, with LLC off the voltage will drop under load. I found that comparing the same OC (175 base clock with turbo on) with LLC on and off, having it off dropped temps by 3C.

3.8ghz is pretty high. My guess is you're either using 200 base clock (x19) or else maybe 180 or so. With turbo on, 180 is definitely the upper limit. I've been stable at 178 but not 180 yet (of course, it is a different CPU).

IMO, try 170 base clock with turbo on and see if you can get that stable, then work your way up from there.

here is my bios, i cant't find LLC. can you help me please. http://i966.photobucket.com/albums/ae141/matvey777/IMG_0350.jpg


http://i966.photobucket.com/albums/ae141/matvey777/IMG_0348.jpg


and the temps. on prime 95 temps not getting higher than 50. http://i966.photobucket.com/albums/ae141/matvey777/Untitled.png

 

[wolfram23]

It's the first option, the V Droop. With V Droop sounds like that means no LLC (LLC prevents droop).

If you're under 50C that's great. Can't really tell from that pic tho, looks like idle temps.

 

[matvey]

i am sorry i am stupid , so here what i should to do make VDroop Control [Without VDroop or With VDroop] ? than CPU host frequency make 170, what about multiplier can i raise it up to 21X or keep it at 19? Thank you for your help

 

[wolfram23]

Well if you want to use turbo it has to be on Auto, with EIST, C1E, and C States all enabled (and turbo for that matter)

And I'd say try "with vdroop". You can easily check which it's doing by having HWMonitor open when running a stress test. The voltage should drop a fair bit (like 0.05V or more)

 

[matvey]

Well if you want to use turbo it has to be on Auto, with EIST, C1E, and C States all enabled (and turbo for that matter)

And I'd say try "with vdroop". You can easily check which it's doing by having HWMonitor open when running a stress test. The voltage should drop a fair bit (like 0.05V or more)

now i have other problem. if i whant to use turbo i need to set up Ratio to 21X because if i put it lower than that i can't use turbo, so i put it to 21X and turbo kick it up to 22X. in that case i need to lower my host Frequency to 180 and here is the thing i have this RAM http://www.newegg.com/Product/Product.aspx?Item=N82E16820145288&cm_re=corseir_ram-_-20-145-288-_-Product speed is 1600, with host frequency 180 a can't run it at that speed ( 1600) because when i put the memory frequency to 1067 it's run about 1400 and if i put memory frequency to 1333 it run at 1700 and i don't think that i can overclock ram that much. Is there is a solution? please answer.

 

[wolfram23]

IMO run the RAM at 1800mhz CL8, but you could do 1440mhz CL6 too although it might take a little more voltage for that.

 

[matvey]

what is CL8 and CL6?

 

[wolfram23]

The timings. Yours is rated 1600mhz 7-7-7-21 which is CL7. So CL8 is 8-8-8-24 etc.

 

[matvey]

my ram is 7-7-7-20, so i can try 1440 MHZ 6-6-6-18 ? i am really appreciate your help.

 

[wolfram23]

Yeah exactly, but it may not work at 1440...

Example, my RAM is 1600mhz CL8 (8-8-8-24). I have my base clock currently at 177, so my RAM is at 1412mhz CL7 and it works fine. However, at 178 base clock the RAM is running at 1424 and now it's unstable unless I add a pinch more voltage, like 1.66V. So at 1440mhz, I would need 1.68V or so, and your RAM may or may not be the same.

 

[matvey]

Best answer selected by matvey.

 

[matvey]

THANK YOU.