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Discussion in 'CPUs and Overclocking' started by hans007, Jul 18, 2011.
That stinks.. Oh well, we know mobile Llano will still kick butt now.
Hans, does K10Stat still work to underclock/undervolt? It should...
Very excited to hear that mobile Llano is unlocked! Here is hoping they don't change their minds and start locking them.
it seems like that might work. well on the tab where it let you change the FID values that is message at the bottom that says that the core speed is locked or something. i'll take a look at it again when i get home.
That still might be useful, though you could always undervolt the old-fashioned way
On SA, somebody got their Llano down to .75V @ idle.
Seems GF's 32nm process isn't so bad after all. Unless this guy was just real lucky.
so i tried it again. and you can definitely underclock. it won't let you make the voltage any higher than 1.3875 though (which is the default).
So the odd thing is sometimes it will let you overclock and sometimes it wont. so what i did was run 4 threads of prime 95. So for a little bit i had it at 3200mhz. then eventually it would settle down to just 2600mhz .
so i would shut down prime 95, then restart it and it could not hit 3200 again .
so i reset k10stat to 2900mhz, and restart prime and its at 2900 again. but after that initial move to 3200 i could not sucessfully set it to 3200 again. not sure if that has something to do with the TDP cap or not...
I've never used k10stat before
and the one thing i can see is it says "K10Stat clock control function is disabled"
and to the right of that is 500ms up, 2000ms down. What does that mean?
so now i set K10State clock control function is disabled to 10000ms up. And it let me overclock to 3400mhz at the default 1.3875V and it was stable for a bit then one of the workers failed. then it shut off and went down to 2600mhz again.
then after that, i shut off prime, and reset it to 2900mhz and it still failed even at stock. so i waited a bit and now 2900mhz is ok again. so maybe the llano is really heat sensitive or has some sort of super aggressive TDP cap. i wonder if it can be disabled and how the a8-3850 deals with exceeding its 100W threshold.
Can you adjust voltage in your BIOS with that mobo? If so lower it to where you think 3.4GHz is stable in BIOS, then you can try to tweak it with K10Stat
hmm just discovered that my crappy patriot signature ddr3-1600 , doesnt like CL 9 timings at 1.5V. so that was why prime was crashing. seems to be ok at CL 10 so ill probably have to try some more unlocked overclocking with k10stat later.
k10 stat seems to allow you to tweak voltage down but not up. i can't do anything in the bios of this board. not even memory voltage.
testing my Llano system here but notice that latency is not important. Biggest difference is increasing the ram freq.I have my Crucial 1333mhz CL 9-9-9-29-40 now at 1866Mhz 9-9-9-34-46
Funny how these basic Crucial sticks do 1866Mhz without a hitch now. Stock voltage(I think). The 3850 is no slouch either. I am impressed. For this money such a CPU!!!!!!!!
This definitaly will be a hit for OEM PC's.
power usage @1866Mhz ram
IBT 140VA 30Gflops
I have the GPU at 800Mhz now to try. Ram at 1600mHz. I am not sure if there is any change in speed? Had to lower the ram speed so it looks like its about the same speed as lower GPU clock with higher ram speed.
BTW changed the cpu fan for a 1090T fan. With Furmark it reached 75C so now it stays max at 65C. Fan at full blast.
Very interesting... So hans you actually got it above stock? Wth is going on with Llanos turbo...
Is performance actually increasing? Remember that BIOS bug where the leaker thought they had oced to 5ghz...
Also, I wonder how underclocking improves power usage... Very interested in one of these for a laptop
Undervolting is beast on Llano....also, the current Llano desktop CPUs don't have turbo mode.
Also, it has been tested through another overclocking website that the sweetspot for Llano is 1600 MHz or higher, and a latency of 8 or under.
Yeah CPU z said it was over stock but not sure it was real. Will play with it more today after work
Not even memory voltage? On a platform that benefits from higher-speed memory or memory overclocking?
What board do you have, so that I can avoid it?
Oh, ECS, that explains it. I would have avoided that board anyways.
Overclocked 3850 to 3493Mhz and ram at 1866Mhz. Multiplier is unlocked=@35 now instead of 29.
Holy christ going for 533 to 933 doubles your furmark score? You're pushing on 5650 territory there. Do you have numbers on an 800MHz gpu, 3.5GHz cpu, and 933 RAM?
How did you get the CPU up to those speeds? BCLK OCing, or K10stat?
Great score, btw :thumbsup:
Just increased multiplier in bios. Multiplier is unlocked!!
It won't do 800 on gpu and 1866 ram. It will do 800 gpu and 1600 ram.
Think he meant 1866 :thumbsup: