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post #7031 of 10697
Quote:
Originally Posted by ryuji View Post

You just proved that the speedstep option in your bios has no effect. as i dont think C1E is capable of dropping it down quite that far. I think using offset voltage might be overriding the speedstep disable option. Offset based voltage is using the speedstep lookup tables to derive your voltages. Easy way for you to check if C1E is dropping it down, You can check it out if it intrigues you enough.
C1E in its original implementation was for dropping the 3.6/3.8 ghz prescott's down to i think 2.8 ghz(?) and dropping the voltage by ~.2 volts. I always had it disabled so i dont remember exact numbers. It used to do it by dropping the multiplier and nicking at the bus clock speed if i recall correctly but its pretty obvious thats not the case for sandy bridge as the base clock stays static.

I didn't do a 12 blend test but I did both 1344/1792 for 30~40mins each without issue. The net effect is the same.

That's pretty interesting.
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post #7032 of 10697
Quote:
Originally Posted by nismofreak View Post

I didn't do a 12 blend test but I did both 1344/1792 for 30~40mins each without issue. The net effect is the same.
That's pretty interesting.

in your test tho, did you shut C1E off and have speedstep disabled. that was the test i was inferring. If shutting down both pegs your cpu out at max multiplier, i guess the line between C1E and speedstep is blurred, isnt it?



in other news 1.4v pll seems stable, trying out 1v vccio as people say you dont need to maintain 0.5v between dram and vccio. CPU is already running 5C overall cooler with my tweaks so far thumb.gif
Edited by ryuji - 1/30/12 at 9:00pm
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post #7033 of 10697
Been a while since my last ASRock rig submission ... and, I've changed the CPU to a 2700k and replaced the GTX 460 FPB's in SLI with GTS 450sc's in SLI. Details on my complete rig are below, but, the cooling is a Kuhler 620 with push/pull and this run was made with a Vc of 1.255. I think everything should be in order this time:

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post #7034 of 10697
will definitely be looking through the guides for my 2700k folding rig im putting together: http://www.overclock.net/t/1206900/build-log-budget-low-power-2700k-folding-rig/0_30
im suprised there arent more 2700ks in the list....
post #7035 of 10697
Quote:
Originally Posted by ryuji View Post

Is it worth undervolting VCCSA too?

Vccsa is taken as a reference voltage within the processor, if you change that, some parts of the uncore, I think, won't be running on the voltage the processor thinks they're running at.... Best to leave it on auto.

Your low PLL could be the reason for your lower temperatures, usually the core temperature drops as well when you lower PLL, did yours change at all?
post #7036 of 10697
Quote:
Originally Posted by scorpiontsi View Post

Yea I took a screenshot and rebooted to bios to fix it. I figured out whatever you do when trying to offset voltage overclock do not use auto. Set - or + .005 boot and see what the voltage is adjust from there. The auto actually auto mods the voltage insanely high. This is with my mobo and probably any z68 asus boards that support offset overclocking

This really bugs me. What if I wanted exactly VID voltage? Oh well, I don't, so minor gripe, I guess.
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post #7037 of 10697
Quote:
Originally Posted by Goof245 View Post

Vccsa is taken as a reference voltage within the processor, if you change that, some parts of the uncore, I think, won't be running on the voltage the processor thinks they're running at.... Best to leave it on auto.
Your low PLL could be the reason for your lower temperatures, usually the core temperature drops as well when you lower PLL, did yours change at all?

PLL mattered a lot, vccio helped a bit

Guess since i found my stable VCCIO at 1.01(or so, i think, going to 12 hrs blend overnight) im done. i still havent fine tuned my dram voltage and i heard people after fooling with vccio/pll can drop core voltage. so still more fun ahead of me. Maybe i ought to give a higher multiplier another shot too biggrin.gif
Quote:
Originally Posted by Antipathy View Post

This really bugs me. What if I wanted exactly VID voltage? Oh well, I don't, so minor gripe, I guess.

then use auto if you want exactly VID(not auto offset, but auto voltage)
Edited by ryuji - 1/30/12 at 10:51pm
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post #7038 of 10697
Hi,

I have a question about my temps.
430
The minimum temps seem quite low. Its only on idle and my roomtemperature is minimum 16 °C.
The max temps are from a 15min prime blend test (multi 43).
I just changed my case and I fear that the sensor is somehow broken.
How close to room temp does a 2500K go?
Hope its ok to ask about temps in this thread.

Thanks
Edited by NARF - 1/30/12 at 10:34pm
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post #7039 of 10697
Quote:
Originally Posted by NARF View Post

Hi,
I have a question about my temps.
The minimum temps seem quite low. Its only on idle and my roomtemperature is minimum 16 °C.
The max temps are from a 15min prime blend test (multi 43).
I just changed my case and I fear that the sensor is somehow broken.
How close to room temp does a 2500K go?
Hope its ok to ask about temps in this thread.
Thanks

sandy bridge drops down to 1v under idle and clocks down way low, if i had to make a guess somthing like 10-20 watts. Imagine putting a cpu cooler on your south bridge wink.gif
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post #7040 of 10697
Quote:
Originally Posted by NARF View Post

Hi,
I have a question about my temps.
430
The minimum temps seem quite low. Its only on idle and my roomtemperature is minimum 16 °C.
The max temps are from a 15min prime blend test (multi 43).
I just changed my case and I fear that the sensor is somehow broken.
How close to room temp does a 2500K go?
Hope its ok to ask about temps in this thread.
Thanks

I think it's totally fine. You got nice temps and be happy about it. How you can live there in 16c? biggrin.gif My nose is dripping on 20c biggrin.gif
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  • [Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET
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