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post #20771 of 22593
Maybe darkwizzie's haswell thread with the x264 test has some info and recommendations, also sin's z87 oc guide and z97 oc guide have some useful info but overall OCing is the same for about 30 years or more so I don't know what is there new to add. You balance voltage vs clock vs temperature vs hardware limitations. You can find recommended limits in the guides, suggested are quite subjective, for me Vcore 1.2-1.3V, Vring 1.1-1.2V, Vccin +0.3V medium LLC, SA-IOA-IOD depends on RAM but often +0.1 to +0.15V is enough. Achieved clocks vary per chip, start with 4.4GHz on core and 4GHz on cache. Deadzone on Air is about Vcore 1.4V, Vring 1.3V, Vccin 2.0V, ... pointless to go above these and possibly ruin your chip.
iGPU often ends at 1700MHz and the voltage settings can be a mess because almost no app displays gpuVID let alone Vgpucore, going above 1.2V total on iGPU doesn't seem to bring any more stability at all, I use 0.975V + 0.15V offset which gives me 0.980V gpuVID, no idea if the live voltage is 0.980V or 1.125V, can only see gpuVID which never is the same as set voltage in UEFI, it's a bit messy.
Edited by JackCY - 6/15/16 at 3:20am
post #20772 of 22593
found the guide thanks! wish me luck
post #20773 of 22593
Quote:
Originally Posted by JackCY View Post

Maybe darkwizzie's haswell thread with the x264 test has some info and recommendations, also sin's z87 oc guide and z97 oc guide have some useful info but overall OCing is the same for about 30 years or more so I don't know what is there new to add. You balance voltage vs clock vs temperature vs hardware limitations. You can find recommended limits in the guides, suggested are quite subjective, for me Vcore 1.2-1.3V, Vring 1.1-1.2V, Vccin +0.3V medium LLC, SA-IOA-IOD depends on RAM but often +0.1 to +0.15V is enough. Achieved clocks vary per chip, start with 4.4GHz on core and 4GHz on cache. Deadzone on Air is about Vcore 1.4V, Vring 1.3V, Vccin 2.0V, ... pointless to go above these and possibly ruin your chip.
iGPU often ends at 1700MHz and the voltage settings can be a mess because almost no app displays gpuVID let alone Vgpucore, going above 1.2V total on iGPU doesn't seem to bring any more stability at all, I use 0.975V + 0.15V offset which gives me 0.980V gpuVID, no idea if the live voltage is 0.980V or 1.125V, can only see gpuVID which never is the same as set voltage in UEFI, it's a bit messy.
Good post, and info.
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post #20774 of 22593
Quote:
Originally Posted by dmfree88 View Post

I am running 4.8ghz on air cooling with delidded CPU under 70c during IBT on high 1.232v (see sig rig for cooler/photos/other parts) fans are on low noise profile. Can push 5.0ghz but hit 91c on IBT normal at 1.4v but never tried to stabilize lower voltage to see if I can get better temps. Can probably stabilize 5.0 in low ambients and better case flow (currently not optimal). After gaming and screwing around today I peaked at 42c at 4.8ghz
i looked into delidding cpu.
For my 4790k i7, its simply using razor to open up the cpu in half and applying paste inside the cpu, put the cover back on and put paste on again?
post #20775 of 22593
Use a vice it's much easier and safer if done right. Or there are tools that can be created or 3D printed that work the same as vice but have better contact with the CPU and do not send it flying anywhere though the vice only should not send it flying really wink.gif
You can make a tool that with enclose the CPU, then rotate the two parts a little and it will rotate the IHS on the PCB to loosen the IHS off.

You need to use Coolaboratory or similar "metal" based paste or just use the CPU without IHS which is even more tricky when it comes to coolers and attachment.
post #20776 of 22593
Quote:
Originally Posted by JackCY View Post

Use a vice it's much easier and safer if done right. Or there are tools that can be created or 3D printed that work the same as vice but have better contact with the CPU and do not send it flying anywhere though the vice only should not send it flying really wink.gif
You can make a tool that with enclose the CPU, then rotate the two parts a little and it will rotate the IHS on the PCB to loosen the IHS off.

You need to use Coolaboratory or similar "metal" based paste or just use the CPU without IHS which is even more tricky when it comes to coolers and attachment.

Not that tricky to be honest. After testing myself quite a few months, any cpu water block can be used and it pretty much just ends up sitting on the cpu socket more then on the die itself so its totally safe and full proof. Air coolers however do not have a huge heatsink mounting surface so yea it is a bit trickier but not too bad. Pretty much just need to mount the heatsink even with the cpu socket or 1mm lower. A thin piece of metal or cardboard can be put flat on the cpu socket then measured to the mobo pcb and have the mounting standoffs cut/trimmed to fit.

Its not too hard but its a pain in the butt for the few degrees you save. Me personally i went from 53°C to 46°C at the time and with the ekwb mounting standoffs it was pretty easy. I did notice that it doesnt sit on the standoffs at all and pretty much sits on the cpu socket lol.
    
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post #20777 of 22593
Quote:
Originally Posted by MCFC View Post

Haven't been in this thread for like 2 years redface.gif
I'm finally ready to overclock my 4790k, are there any good guides around for noobs like me?

http://overclocking.wikia.com/wiki/Haswell
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post #20778 of 22593
Quote:
Originally Posted by bluej511 View Post

You can see how much lapping and cold ambient makes sense. Guessing it never gets quite ridiculously hot in Oregon lol.

Thats actually cooler then i run with a full loop and 2 rads and bare die so that lapping and ambient must really help.

Actually it has been fairly warm recently. Cool ambients last couple days though. It was probably around 19c when I tested and yesterday. I think most of it is this chip. I got a pretty good one I think.
Quote:
Originally Posted by evmedievalol View Post

i looked into delidding cpu.
For my 4790k i7, its simply using razor to open up the cpu in half and applying paste inside the cpu, put the cover back on and put paste on again?

Believe it or not they have a badass tool for this now. Check out the club here for more information:

http://www.overclock.net/t/1313179/official-delidded-club-guide

Here is the post that shows the tool and a video:
http://www.overclock.net/t/1313179/official-delidded-club-guide/30320#post_25137172

I think it is fairly cheap even to ship from out of country. Might even be able to find someone in the club who is willing to sell you or rent you theirs I think I saw someone doing that previously. If you choose not to do it this way the vise method is best otherwise but you will want to do a lot of research, some people choose riskier methods. Do not use a razor it is seemingly the most risky. Watch enough videos you will see it is easy, no hammer needed.
Edited by dmfree88 - 6/15/16 at 8:40am
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post #20779 of 22593
Quote:
Originally Posted by dmfree88 View Post

Actually it has been fairly warm recently. Cool ambients last couple days though. It was probably around 19c when I tested and yesterday. I think most of it is this chip. I got a pretty good one I think.
Believe it or not they have a badass tool for this now. Check out the club here for more information:

http://www.overclock.net/t/1313179/official-delidded-club-guide

Here is the post that shows the tool and a video:
http://www.overclock.net/t/1313179/official-delidded-club-guide/30320#post_25137172

I think it is fairly cheap even to ship from out of country. Might even be able to find someone in the club who is willing to sell you or rent you theirs I think I saw someone doing that previously. If you choose not to do it this way the vise method is best otherwise but you will want to do a lot of research, some people choose riskier methods. Do not use a razor it is seemingly the most risky. Watch enough videos you will see it is easy, no hammer needed.

Yea 19C is what winters are like here indoors, right now im probably at 24-25C and thats with windows open. Then the case ambient starts heating up as theres no AC here and even though its quite breezy (2mins from the sea) doesnt cool the room as well as id want.

I actually posted in there and got to review one of the tools that no one had tried before. Ever since i reviewed it seems like at least a handful of people have ordered one and a few on skylake and said it worked flawlessly.

I wish more people lived close by id just delid em for free just to put the tool to use. The other one that comes close is priced at 70€ and thats totally overpriced even from an engineering stand point.

http://www.overclock.net/t/1313179/official-delidded-club-guide/30320_20#post_25137172
Edited by bluej511 - 6/15/16 at 8:45am
    
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post #20780 of 22593
I suppose after you remove the steel closing bracket the water block fits and pushes the CPU as down as it can and then sits on the fiber class socket base?
Air coolers are quite heavy and shift pressure point as you put turn the case around due to gravity, small coolers are fine on bare dies but any bigger heavier air cooler is a risk to cause damage.
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