first over clock

[Taza]

hi i have just done my first over clock on my new ivy bridge pc
specs:

CPU: 3770k
MB: Gigabyte z77x-UD5H-WIFI
Ram: 16GB G.Skill Model: F3-2133C9D-16GXH
Cooler: Corsair H100
GPU: on board atm waiting on delivery of Asus GTX680 Top Edition (1201mhz)
Case Antec DF-85
PSU: Antec HCG-900

what i want to know is if i have done these setting right

http://valid.canardpc.com/show_oc.php?id=2483666

bios pics













Taza to come

[Brianf1971]

Originally Posted by Taza

hi i have just done my first over clock on my new ivy bridge pc
specs:

CPU: 3770k
MB: Gigabyte z77x-UD5H-WIFI
Ram: 16GB G.Skill Model: F3-2133C9D-16GXH
Cooler: Corsair H100
GPU: on board atm waiting on delivery of Asus GTX680 Top Edition (1201mhz)
Case Antec DF-85
PSU: Antec HCG-900

what i want to know is if i have done these setting right

http://valid.canardpc.com/show_oc.php?id=2483666

bios pics

Taza to come

Volts are pretty high, still within limits and really depends on chip, however I get 4.5 @ 1.2v, what are your temps like at full load, also what are you using to validate, I know everyone suggests Prime, however on IVY it's recommended you use AIDA64 as this is more chip aware and closer to real life.

Brian

[Taza]

hi Brian

thanks for that. i set it that high due to what i was reading. should i lower it down and see what happens? if so how low?

i was about to run a program but was not sure if i should use prime, aida64 or Sandra

cheers
Taza

[Taza]

ok been running AIDA64 for last 2hours at full load and now issues highest temp is core 2 at 76 degrees

might try to drop vcore from 1.320 to 1.25 and see if its stable

also might leave it at 1.320 and push for 4.8GHz

any input is welcome

cheers
Taza

[Brianf1971]

Originally Posted by Taza

ok been running AIDA64 for last 2hours at full load and now issues highest temp is core 2 at 76 degrees

might try to drop vcore from 1.320 to 1.25 and see if its stable

also might leave it at 1.320 and push for 4.8GHz

any input is welcome

cheers
Taza

You actually went about this backwards for IVY, you should build up CPU VCore not work down, anyway done now, drop the Vcore, also look at load line calibration, you might not need it quite that high, don't know your board but my experience is that setting high means it jumps right up to max volts needed or not, you may be able to loosen that off a bit, work on one setting at a time so for now focus on getting vcore down, you can also look at dropping PLL a bit as well has been know to reduce heat further.

75 isn't really that great considering it Winter, don't know your ambient but getting it's not 30c+ just remember overall heat will be affected by ambient so should target to get it as low as possible, I'm using water and lots of Rad for a CPU so I can dissipate way more then normal, also remember that with IVY CPU's there is TIM under the IHS therefore heat gets trapped and isn't dissipated as well regardless of cooler.

As for 4.8 I wouldn't push IVY without really good cooling solution, I found at the volts needed for 4.8 (1.36)& 5Ghz (1.44) the chip jumped heaps in temp, with a decent Air cooler I couldn't get past 4.7 without exceeding 90c.

Get a good low volt stable 4.5 and work from there before pushing higher, that being said 75c (assuming all core <) at 1.32v means you've prob got a reasonable overclocker (not a great one).

Brian

[Taza]

Thanks for that

So if I set vcore to say medium and drop the volts to 1.25 and go from there? If it becomes unstable what are signs of it?

And with regards to the chip even tho they are mass produced can they really vary that much to how much you can oc it?

Cheers
Taza

[Brianf1971]

Originally Posted by Taza

Thanks for that

So if I set vcore to say medium and drop the volts to 1.25 and go from there? If it becomes unstable what are signs of it?

And with regards to the chip even tho they are mass produced can they really vary that much to how much you can oc it?

Cheers
Taza

Yep sounds good, you can use PLL as well to stabilize and reduce heat (settings between 1.6 & 1.8), the other thing you may want to do is make sure the Memory is set to XMP profile (or drop it to 1333) just to make sure it doesn't cause issues, it prob won't if set to Auto as memory controller is on chip for IB, each chip/board needs to be treated a separate case and as I said focus on one setting at a time, once you get min Vcore for your given speed then play with PLL to see if it lowers heat.

I don't want to add complication but the best way I have found is set Turbo volts to +0.004 and then under volt by -0.020, but as I said each hip is different and that's mine, the reasoning behind this is I only add additional volts when I need to, at idle (1600mhz) my volts are < 1 so most of the time my draw is really low and my chip stays really cool i.e. all cores 22-26c at 20c ambient.

And yes they can very heaps especially IB as they went with TIM under the IHS rather then solder, this means if the TIM is not a good application heat can be a real issue, I have seen reports of some chips being able to hit 4.6 GHZ and still be under heat threshold (however volts were too high IMHO) and have seen some people struggle to get over 4.2ghz without hitting 90c so yep more then any other chip IB can vary.

Enjoy

Brian

[Taza]

Ok cheers I do have xmp profile enabled. Where do I find turbo volts? Also should turbo be disabled? And hyper-threading disabled?

Cheers
Taza

[Brianf1971]

Originally Posted by Taza

Ok cheers I do have xmp profile enabled. Where do I find turbo volts? Also should turbo be disabled? And hyper-threading disabled?

Cheers
Taza

Believe dynamic vcore is similar to my Asrock Turbo voltage offset but don't quote me, going off google on that.

Turbo needs to be on to overclock, and leave HT on as otherwise you may as well have an i5, I just noticed you turned all C states etc off and thermal protection off, turn them all back on, you want your i7 features on or performance will be poor and thermal protection will make sure you don't cook your chip.

Recommend you restore defaults to undo any other changes you have made, set XMP profile and only play with the Voltage and LLC and multiplier until you get a stable OC, then play with PPL to drop temp.

use this guide http://www.overclock.net/t/1247413/i...ide-at-the-end to help.

Brian

[Taza]

Thanks for the reply

im a but confused tho. I reset bios and did what you suggested VCore 1.25 xmp enabled CPU ratio 46. LLC to turbo from extreme. And PPL is 1.600. Running aida 64 for last 30 mins and core 2 max is 70c.

My confusion is is that thread u linked says to turn turbo off vcore 1.32 turn off all that other stuff I did before. Please help now so.confused. I have same board as that guy.

Cheers
Taza

Also noticed in cpu-z my multiplier fluctuate from 46x to 16x when not under load is that normal?

[Brianf1971]

Originally Posted by Taza

Thanks for the reply

im a but confused tho. I reset bios and did what you suggested VCore 1.25 xmp enabled CPU ratio 46. LLC to turbo from extreme. And PPL is 1.600. Running aida 64 for last 30 mins and core 2 max is 70c.

My confusion is is that thread u linked says to turn turbo off vcore 1.32 turn off all that other stuff I did before. Please help now so.confused. I have same board as that guy.

Cheers
Taza

Suggest you read the whole thing, his first line sums it up

If you want the best results you should disable power saving options like I have below, however if you want the CPU frequency to drop under idle conditions, you should leave them enabled.

but to clarify

Turning turbo off locks the overclock (speed step) i.e 24x7 at specified multiplier does not reduce when idle.
C-states & halt c1e are for speed step you disable these if you want your overclock to be 24x7 (not needed unless you benchmark without load, or are just wanting to waste power IMHO)
Thermal monitoring is a M/Board function that shuts down if a threshold (usually 85c) is reached to protect your chip, I don't advise you turn this off unless your going for a high overclock.
EIST underclocks your cpu when idle i.e. drops back to 1.6ghz, this significantly reduces draw when doing simple tasks like browsing etc or nothing, I recommend you leave this on unless you have disabled c-states.

He does not turn of HT, that the main diff between i5 & i7.

I don't recommend playing with these until you fully understand your chips limits and your ready to push for 5Ghz.

Brian

[Taza]

Ok cool I get it now.

1hr in cpu max 50c average 46.8c
Core 1 max 66c avg 55.9
Core 2 max 72c avg 69.1c
Core 3 max 68c avg 56.3c
Core 4 max 67c avg 57c

With these current setting could I step up to 4.8GHz


Cheers
Taza

[Brianf1971]

Much better overclock

Now you have a baseline start playing around an see how low you can get it.

Hold off until you get 4.5 dialed in 100%, 4.8 will require more volts you need to see how low you can get 4.5 before you push on.

Brian

[Taza]

Originally Posted by Brianf1971

Much better overclock

Now you have a baseline start playing around an see how low you can get it.

Hold off until you get 4.5 dialed in 100%, 4.8 will require more volts you need to see how low you can get 4.5 before you push on.

Brian

coolies

so just play with vcore lowering it? leave PPL at 1.600?

this test is at 4.6 so should i knock it back to 4.5?

sorry to be PITA only way i learn is by asking lol

cheers

Taza

[Brianf1971]

Originally Posted by Taza

coolies

so just play with vcore lowering it? leave PPL at 1.600?

this test is at 4.6 so should i knock it back to 4.5?

sorry to be PITA only way i learn is by asking lol

cheers

Taza

Not a problem asking mate, we both learn actually as I'm learing Gigabyte while we go back and forth without having to buy a board so win win

4.5 seems to be the sweet spot looking at what others have achieved, you want to know how much you can undervolt your CPU as much as how far you can push it, if you can get 4.5 @ 1.2v then you got a pretty good overclocker and should be able to get 5Ghz, I did, anything above 4.5 seems to require heaps of additional volts which on IVY translates to massive heat, drop things down to 4.5, drop the volts to 1.2, leave pll where it is and check with AIDA64, if it fails, play with PLL until you get stability, post back how you go with temps and we can discuss next steps if you like, I know it's tempting to push hard but take it slowley and you'll get a great 24x7 overclock without stressing the chip.

Brian