Delidding my 7700K

It was more of a tilting wobble, as I look at the picture after the first one it looks like some areas pressed to the surface and others didn't as if ti were warped.

 

Wow, all of my delidding stuff arrived today after only ordering it yesterday, even got a pack of free Haribo sweets in my overclockers parcel! The der8auer Delid-Die-Mate 2 is packaged very profesionally & the manufacturing of the tool looks spot on, so far I recommend this tool, but only on appearance - I haven't tried it yet! Will make a start on my delidding this weekend, Saturday or Sunday.

This is where the firm gluing down probably helped, maybe it straightened it out & enabled the lid to be closer to the core in some areas. I'll take a good look at the IHS when I remove mine this weekend, I'll see if it's straight & if it sits flat on the PCB.

 

Interesting, i haven't seen that on any of my 6700k's or the 7700k's. But definitely could be the reason why you had better results with gluing it down.

 

I didn't leave a small gap when I reglued the IHS. The temps are great. Should I have left a small gap. All the videos I watched, before doing it, never mentioned this.

After an hour of OCCT the temps average 50 degrees. No over clocking though with a NZXT kraken x62. Fans at 65 percents (push pull).

 

I would leave it alone, great job!

 

Yeah, if the temperatures are great, I wouldn't worry about it!

Ok, I've delidded & relidded my 6700K, it's currently sitting in the "Der8auer Delid-Die-Mate 2" curing the sealant, will place it back in the PC tomorrow & test for temperatures. I'll provide before & after pics of 1 hour of Prime95. Here are some pics of my process, first time using Coollaboratory Liquid Metal - slight tightening of orifices during process (biological!) - do you think I used the right amount of liquid metal (@Mr. Fox, @Papusan and others), see pics - I tried to use the smallest amount possible, and the hardest part of the liquid metal application was getting the damn little bead of liquid metal to unstick from the syringe!?

Delidded:

Cleaned Up (used a cut strip of credit card to scrape off old glue):

Liquid Metal & Kapton Tape:

RTV Sealant applied (tried to use it as thinly as possible):

Relidding with der8auer Delid-Die-Mate 2 (hope I didn't tighten it too much, praps tighntened it just a few degrees more than their 90 degree recommendation!):


I always thought the IHS was a flimsy thing, but it's pretty chunky & accounts for pretty much the whole weight of the CPU package. I also noticed that the IHS does sit flat on the PCB, it's not warped. The IHS does seem to float on top of the chip, not reaching down to the PCB on any sides (but only by fractions of a mm I would guestimate) - I guess this means that there's really not gonna be any kind of gap at all between IHS & chip - great!

 

All good. Waiting for results. Could you also run Aida64 Stress FPU only. As well a test with the 4 boxes ticked CPU-FPU-CASHE-MEM. Thanks

 

Pleased to hear that you think I've put the right amount of liquid metal on, etc. I'll run that test if it's a free download. It's a 24hr curing time on that silicon sealant, so I'll be placing it back in my PC tomorrow afternoon, and then I'll get on with testing. I'm excited to see what the results will be like, and I bet I'll have a smallish chunk of apprehension that when I press that power button it won't turn on, haha!

 

Maybe your undervolt don't stick when you put it back and boot up, HaHa J/K
Yeah, Liquid metal on die and sealed with IHS can't go wrong. Worse with those who use the whole syringe on their BGA chips and hope they don't kill the Crap

 

Ha, those BGA jokers! ;-) Maybe I'll be able to overclock more with the liquid metal delid now, we'll see tommorrow!

 

Woohoo, success I believe, my computer did power on with no problems after delid, and temperatures are lower, by a long way.

Before Delid (1hr Prime 95 v26.6, room temperature 19.5 degC):

Temperature after Delid with Liquid Ultra between chip & IHS (1hr Prime 95 v26.6, room temperature 20.5 degC):


As you can see, I got a 14 degC drop in CPU Package temperature with the delid, and after accounting for room temperature differences that's a 15 degC temperature difference after delidding! Now, I did blow out some dust from the CPU heatsink using a can of compressed air, so that's gonna make a difference too, but not anywhere near 15 degC difference, I've never had temperatures anywhere near as low as this on this PC.

There is still a large temperature difference between cores, and I was hoping delidding would cure this, because I had been assuming that it was due to uneven pasting/mounting of the IHS on the CPU chip - it looks like that's just the way my 6700K operates: either temperature sensors are skewed on the actual CPU (think I heard that's a thing), or there's some kind of imperfection in the IHS. I thought the original Intel stock paste job looked alright with good contact though( ), so I'm not sure. I think the mounting of my CPU cooler (Noctua NH-D14) is ok though, paste looked evenly distributed & consistent thickness when I took it off. So, I think that's just the way my 6700K is, but temperatures are pretty darn good now I think. Is a 53degC CPU Package temperature good for a 96W load (taken from my HWInfo Sensor reading pic above)?

Temperatures while web browsing aren't bad either!:


@Papusan , I'll install Aida64 & test that tomorrow (or later today), which you were interested in.

EDIT: just over 1hr of Titanfall 2 gaming, and CPU temperatures in the 30's, that's pretty good!

 

Congrats

 

Nice job.

 

Thanks, I'm pretty pleased with the results!

@Papusan , just finished running the Aida64 stress tests you were curious about. 15min run for each. 21 degC room temperature. System already heat soaked.
Aida64 FPU stress test

CPU Package temperatures in 50's

Aida64 CPU-FPU-Cache-Mem Stress Test

CPU Package temperatures in 40's

Interestingly, it looks like the temperature difference between the cores is evening up a bit more, which is good. Is there any curing time or bedding in associated with Liquid Ultra Delids?

 

I have no idea. I used thermal grizzly LM. Right off the bat I only had a 3 degree difference in core 2 compared to the rest of them. I7 7700k though.

 

Thanks. Welcome to the Liquid metal club On time!! Prep your IHS will most likely fix a bit more of the core differences.

First... Interesting seeing Aida64 stress FPU give about same Cpu package Power as Prime95 v26.6 Actually 5w higher. Second...There shouldn't be a difference in evening core temp after some use with liquid metal on die(maybe the thermal paste between die-IHS do this for you). Normally same results from the beginning.

 

I think I read during my research on the Coollaboratory website that there was a 48hour window after application during which time the liquid metal takes on a firmer viscosity. If that's the case, and I'm slowly starting to see my core temperatures even up a bit, then perhaps I should run some torture tests on the CPU before that 48hr window up - to aid in the bedding in of everything?

 

You could try, but I haven't seen the big difference with my use of it. Prep the IHS will probably make a bigger difference. Have you seen the same suggestions for Phobya or Grizzly Conductonaut? Website?

 

About the bit in bold typeface that I put in your post, so you do think there's a possibility it might cure up with time to even out the temperatures on the cores? I'm gonna run some of the latest Prime on my CPU before the liquid metal 'sets', hopefully that can kick it into action and even up the core temperatures a bit.

EDIT: just seen your reply, thanks.

 

You could as well ask and get more answers in the Silicon Lottery thread

 

Thanks, will check that out in a minute.

I've just run 50mins of the latest Prime95 (v28.1), and ran small FFT's for maximum heat. Temperature differences are now 'only' 10 degC between cores, whereas immediately after delid they were at 13degC differences. And wow, these are not some bad temperatures right for air cooling 6700K operating at 130W?! (only 62 degC CPU Package Temperature when operating at 130W).

 

It is possible higher load will make them more similar. Hard to say. See if this is cosistent during tests later. Or re-try previous tests.

 

http://www.tomshardware.co.uk/forum/id-1800828/intel-temperature-guide.html

That's an interesting source of information kind of related to delidding & testing temperatures - stuff in there I knew, stuff I didn't.

Will run Prime95 v26.6 small FFT's as per guide above at link above. Previously I was running Blend test. Still thinking giving my CPU a bit of abuse within 48 hrs of assembly could help core temperatures even out while liquid metal still has a more runny consistency. Will let this test run for an hour or two....

@Papusan , at higher temperatures the Intel temperature sensors are more accurate, so maybe that's why they're closer in my instance when testing that 130W CPU load. +/- 5degC is the specification for accuracy of any given Intel temperature sensor, which is why they expect all cores to be within 10 degC of each other (I'm just on that limit at the moment). This info was gleaned from the link at the top of this post (but I have heard others mention it too).

 

Yeah, I have it bookmarked from before. A nice guide.

 

Well I've upped my OC to 4.7Ghz (+100Mhz) (on core & cache), and testing it with Prime95 v26.6 small FFT's, thought I might as well kill 2 birds with 1 stone seeing as I'm running stress tests to try & even out core temperatures anyway. At the moment it's sitting at 104W CPU consumption and 59 degC @1.376V. My previous overclock was [email protected]. I read in that link above in my last post that most Intel CPUs scale with +50mv for every +100Mhz when the CPU is not too far overclocked. I was gonna then try 4.8Ghz at 1.426V, but my motherboard changed the voltage offset numbers in the BIOS from green to red, I guess they too think that over 1.4V is not particularly safe. At the link above 1.4V max safe voltage is mentioned too. To be honest I'll probably back down to 4.6Ghz for everyday usage, and then if I'm bored one time I might try for 4.8Ghz benches in the "Red Zone".

(Please note for those only just tuning into the discussion, I have a 6700K, not a 7700K, but I figured delidding is delidding & overclocking is overclocking, so I did think it kind of belonged in this thread anyway, just be aware I've got a 6700K which is why I'm not hitting the 5Ghz that you guys are able to achieve!).

 

Maybe as well try [email protected] or 1.408v

 

I'll try it now. I did initially increase the voltage on my previous 4.6Ghz overclock to pass hours of OCCT, whereas it was Prime95 stable prior to that, and I've based the +50mv voltage increases today off that baseline - so there's a 'good' chance that 4.8Ghz is Prime stable at 1.4V, I'll try it now. Just did 25mins of Prime95 at 4.7Ghz, 59 degC, stable. Now onto 4.8Ghz....

EDIT: @Papusan , 4.8Ghz (on core & cache) running on Prime95v26.6 small FFT @1.4V, 109W, 62 degC hottest core, 5mins stable so far...will let run for a while....

EDIT 2: 15+mins stable at [email protected] and still 62degC hottest core. Will now try 4.9Ghz at the same 1.4V (expecting this to boot but to fail quickly on Prime95)........

EDIT 3: yep, I was right, it booted but failed immediately when running Prime95 to blue screen at 4.9Ghz @1.4V. Some people on Overclockers say that 1.45V is the safe 24/7 max voltage for Skylake (& Kaby too I think), but I'm not so sure. 1.4V feels dangerous to me even! I reckon I could get 4.9Ghz with 1.45V, praps I'll try that another time, but for now [email protected] is my own personal limit, and I've now dialed it down to my previous 4.6Ghz for everyday. Ha, I bet in a few weeks or months I'll be running [email protected]! Always easy to keep setting new limits, just bit by bit, feeling safe...then BAM, your chip's dead! ( @Papusan , my last conclusions for the day!)

(One thing's for sure, without delidding I wouldn't feel safe even trying to run 1.4V, it'd be in the high 70's on Prime95 without delidding I can extrapolate from my before & after delidding temperature results)

 

DOH! 4.8Ghz wasn't truly stable as it failed in OCCT (even up to 1.45V, so I'm voltage limited here, even if temperatures never went over 63degC on hottest core), was Prime stable though. Gone down to 4.7Ghz @1.376V (I know from previous testing that next step down of voltage is unstable at this level), and currently testing an OCCT run, and so far stable for 30+ minutes with temperatures of 62 degC max & 54 degC average with average pull of 109W, 22 degC room temperature. At least it looks like delidding gave me the confidence to run an extra 100Mhz on top of my previous overclock while running cooler at the same time. I'm still pleased with the result - was it strictly necessary - no - did I enjoy doing it - yes, and I'm pleased I've extracted maximum performance out of my components! (Will update this post later just with confirmation that 4.7Ghz was hours stable with OCCT - will post screenshot!)

EDIT: strange black screen failure @[email protected] during OCCT after about an hour of testing, now increased voltage by 10mv to 1.384V & retesting....

 

Different types load - tests don't have same behavior. And although your processor is stable in those tests with even 24 hours testing doesn't mean you are guaranteed 110% stability.
What's matter is that you have stability in your daily work flow. Not that you can go through 1-2, 4 or even 24 hours Stress testing with OCCT, P95 or Aida64 tests without errors. Only stock clocks can be terminated as stable enough if your work depends on fully stability!! You don't run oc'd processors if your workflow is controlling important infrastructure like nuclear weapons or similar types work.

 

Well, in all my overclocking/undervolting experience of CPUs & GPUs, stress testing overclocks/undervolts with demanding stress tests beyond the requirements of my general workload results in rock stable overclocks that I can rely on during all of my workflows (& game flows!). But, I think I know what you're getting at, you're saying I'm testing too thoroughly for how I normally use my PC - you might have a point. My 4.7Ghz at my increased voltage @1.384V just crashed after 1hr 45min of OCCT. I've now increased voltage by ANOTHER +10mv, but I don't have enough time to test OCCT before I go to bed (don't want to leave a super demanding stress test running completely unattended that can result in blue screen hangs), so just running a less demanding test overnight based on x264, which is more real world test apparently (from this thread: http://www.overclock.net/t/1570313/skylake-overclocking-guide-with-statistics). If it passes the overnight x264 test, then I'll probably test with OCCT tomorrow, so I can be there to check up on it once in a while. Good chance that 1.394V will be stable on OCCT as it would follow with the +50mv 'rule' associated with +100Mhz increments of overclock. And at this point I wouldn't be willing to push voltage any further, but I think I'm confident that anything under 1.4V would be fine for the health of my CPU especially as idle temperatures are in the high teens, and gaming temperatures are in the 30's & 40's, so really those are the real world load temperatures I'll be seeing @1.4V.

 

Yeah, The silicon lottery will rule
Reasonable word (from the thread). About exactly same as what I said in previous post. Neither more nor less.

 

Yep, they recommend x264 as a medium-heavy benchmark to test stability, and recommend an overnight test of that x264. If my CPU passes that test then great, but I'll still probably throw OCCT at it tomorrow, I need to satisfy my curiosity as to whether it's stable or not on it, haha! Plus, if it is stable on OCCT for 3 hrs that'll just make me feel like it's rock stable - see as that link says & as you're kind of alluding to here, we're getting into grey areas of what is stable & what is not, it's always a never ending debate between overclockers on the internet! I'd prefer my PC to be stable slightly beyond the most extreme real world usage I could see, which is why I'd prefer my overclocks to be OCCT stable, mind you x264 for hours stable is more usage than my real world, but I like to be sure! How do you test your 24/7 everyday usable overclocks?

Ok, cool, I've finalised my new overclock now on my delidded CPU (6700K), it's 4.7Ghz on core & cache @1.376-1.4V fluctuating depending on load. I verified the overclock with x264 benchmark ran overnight, as well as 3 hours stable on OCCT, I've also done some gaming in Titanfall 2 & F1 2015 with no issues. Temperatures are really good I reckon, you can see in the pics below (Average Temperature column is applicable as I reset HWMonitor sensors before starting each test):

x264 Overnight Stability Test

OCCT 3hr Stability Test

Titanfall 2 1hr

F1 2015 Benchmark Loop (Stormy Weather Setting: nearly 100% consistent CPU load)


So, delidding gave me another 100Mhz of overclock, as well as lower temperatures. That additional 100Mhz overclock came at the expense of an extra 50mv, which actually happens to fit with 'the rule' that each +100Mhz requires 50mv, which is mentioned in this guide: http://www.overclock.net/t/1570313/skylake-overclocking-guide-with-statistics
My CPU also seems to sit slap bang in the middle of the results in terms of "luck of the Silicon Lottery", which can be seen in that guide above that the median overclock on a 6700K is [email protected] - such mediocrity!

 

Great that everything worked well.
FYI. I have seen the newer OCCT v4.5.0 push harder than the older version you use. Take a look and download

 

Thanks for the congrats, pleased with the results of the delid & the slightly higher overclock. About the new OCCT, I really think I've pushed my new overclock hard enough, it's way beyond any of my normal workloads, so I don't think I'll compromise my successful overclock by running an even more stressful tester. Older OCCT program I'm using is still more stressful than Prime95 v26.6 in my experience - in terms of finding unstable overclocks quicker, so I'm fine with that. I know you yourself are not an advocate of using crazy extreme overclock testing programs/regimes.

 

Very nice Man, I will try made same results

 

Cheers, do you have 6700K or 7700K or something else? Will be interesting to hear how you get on.

 

I delidded my 6700k last week as I was seeing temps spike up into the 80s during gaming and prime95 would easily hit 95 after a few minutes at 1.35v using a cryorig h7.

Now at 1.37v I see spike to the 60s during gaming and prime95 hit into the upper 70s and lower 80s using the same cooler. I used the RockItCool tool and thermal grizzly liquid metal. Totally worth it for me, was nerve racking but fun at the same time.

 

Nice Job

 

@Talon

Well it's been a few months and this morning I had a CPU temp shutdown. I was just surfing the net when all of a sudden my fans all went to 100 and it locked up, shut down then restarted to BIOS with a message about a CPU thermal event. The temp in BIOS was 88 and the red CPU led on the MB was red which validates that the CPU was really at the temperature.

My question is, would you suspect dry LM on the die or a failed pump in the AIO given the rapid temp rise and that all my recent gaming sessions have been normal.

 

I able to get it to run long enough to see the pump rpm at 0, so it's my AIO, I hope Corsair will be helpful,

 

Arghh, another reason to choose air cooling! Good luck, hope they can fix it free of charge.

 

I wish I were able to get the cooling from my air coolers but it just wasn't enough to get my OC.

I'm already annoyed by Corsair, two days to get a reply from the ticket I submitted, I may order one from EVGA, the support would be better and I could keep whatever RMA part as a spare. I wish my Hyper 212 wasn't in a HTPC, I could toss it in.

 

You could probably do it with a Noctua NH-D14 or NH-D15 - I've got an NH-D14 for my 4.7Ghz 1.4V 6700K.

 

How long did you have the aio before it failed. I have a nzxt kraken x62 and run it at 100 percent pump because gamers nexus said to. I wonder if that's bad for the life span.

 

@DukeCLR sorry to hear about your pump failure bro. I have the same h100i v2 but mine has been flawlessand is just a week shy of a full year of service. My previous Corsair h55 was also a decent cooler and never had any issues with it either in its 2 years.

Let us know how it works out with the RMA support.

 

What were you guys able to get on your overclocks. I was able to get 4.8 with 1.30v. Is that good or bad. I didn't really try to go any higher than that.

 

4.8 with 1.30v (6700K) is good.

 

At first they said it would be two days, I was leaving for the crash pad so I ordered an EVGA 280 CLC, by the time I got to the pad I had a reply form corsair, they offered to send one right away with a hold on a CC or just send the other then they will replace it. I'll use the EVGA one as I think it will be quieter and I'll keep the Corsair as a spare.

I have hundreds of hours gaming at 5.0 with 1.35.