Extremely hot i7-7700k. Tried everything.

thomas.kjonsvik · Nov 14, 2017

Hey guys.

I'm having a hard time dealing with temperature on my i7-7700k. Has been upto 98 *C according to HWMonitor. (While playing Overwatch, I dont wanna play Battlefield 1 with this temps...)
Here's my specs quickly explained :

CPU : i7-7700k. With CAPTAIN 240 EX water cooler. (I thought the CoolerMaster fan solution was the reason for the high temps, tried all kinds of Thermal paste, and applied it several times. The water cooler came with pre-applied thermal paste.)

GPU :
ZOTAC GeForce GTX 1080 Ti AMP! Extreme 11GB

RAM : Corsair Vengeance LPX DDR4 3000MHz 16GB ( With X.M.P, running at 3000 mhz.)

Motherboard : ASUS ROG Strix Z270F Gaming, Socket-1151

Case : Phanteks Eclipse P400S, with radiator with 2 fans attached in front, 2 fans on top, and 1 fan in the back.

Anyone has anything to say about this shitty CPU? Been thinking to return it and buy ryzen.

yo.edy.4ever · Nov 14, 2017

Hmm, check your CPU with this tool:https://downloadcenter.intel.com/download/19792/Intel-Processor-Diagnostic-Tool

thomas.kjonsvik · Nov 14, 2017

yo.edy.4ever :

Thanks for the reply, already did that as well. It passed on everything.

yo.edy.4ever · Nov 14, 2017

Did you check for miners? Run a scan with Zemana Anti-Malware / Emsisoft Emergency Kit / HitmanPro. Check your temperatures with Speccy while you play a game and see if same results. Also, I don't know <MODERATOR EDIT ... WATCH YOUR LANGUAGE!>] about liquid cooling, but you're sure your pump and everything is working properly?(https://ekwb.zendesk.com/hc/en-us/articles/205236531-My-CPU-is-overheating-while-being-liquid-cooled-?mobile_site=true)

thomas.kjonsvik · Nov 14, 2017

yo.edy.4ever :

No, didnt check for miners. But i'm gonna do that as sonn as i'm at my computer. Liquid cooling system is brand new, and when i run a bench it peaks at 82 *C. It's just when I play games it gets close to 100 *C. Both PlayerUnknownsBattlegound, and Overwatch. But I'm gonna do a check for miners, thanks again for the tips! And I'm also gonna download Speccy.

Eximo · Nov 14, 2017

Have you checked the core voltage running through the CPU? Anything above 1.35 volts should be concerning.

Many boards default to a very high range to makes as many chips work as possible.

If you have used any of the automatic overclocking features, that would also not be great.

Another thing to do is lower your memory voltage, I was able to bring down my LPX to 1.3 volts? (I would have to check, it has been a while)

If nothing else, I suggest running through an overclocking guide. Then you'll know the ins and outs and get a little boost of performance out of it.

With adequate cooling, even average chips can reach 5Ghz (at around 1.4 volts)

And last but not least. Intel is pretty bad with the thermal compound application between the die and heat spreader. De-lidding worked for me. Dropped from a 91C high to a 78C high just by re-doing it.

lumineZ · Nov 14, 2017

Read this: http://www.tomshardware.co.uk/forum/id-1800828/intel-temperature-guide.html?_ga=2.8635957.1205101901.1500754556-529710141.1499996457

Pay attention to section 9 - TIM problem

And as "Eximo" already pointed out you maybe should look into de-lidding the cpu. Since it looks like you have gotten a really bad one when it comes to thermals...

Had the same problem with mine, now I never ever go over 61-62 degree celcius @ 5,1 Ghz.

Other things:

- Are you 110% sure your waterblock is seated correct?
- Forgot somehow to put thermal grease on?
- Waterpump and rad fans running?

Question:

Lets say you leave your computer turned off for the night. When you turn it back on the day after, how long does it take to reach the thermals you mention? Is it right away within seconds or does it take a long time?

thomas.kjonsvik · Nov 15, 2017

Eximo :

Hey. I haven't thought of the voltage as I dont have that kind of knowledge, but I'll be sure to check it out later when i'm at my computer. And about the de-lidding, I mean that shouldnt be necessary when i pay almost 300$ for a cpu. And it would also void warranty, then I'm thinking of switching to AMD, when Intel's gonna be like that to their customers.

And no, everything is at stock. Except X.M.P. But I dont think that should increase the temps to insane values.

thomas.kjonsvik · Nov 15, 2017

lumineZ :

- Are you 110% sure your waterblock is seated correct? I'd say yes, everything according to instructions. If I didnt have it I'm afraid the PC would shut down pretty often.
- Forgot somehow to put thermal grease on? No, the waterblock came pre-applied, and yes i checked.
- Waterpump and rad fans running? I'm really a bit insecure about the pump, but the fans run, and they increase revolutions as temperatures increase, is there any way to physically check if the pump is running. I mean there is light there, but no sound or vibration

Lets say you leave your computer turned off for the night. When you turn it back on the day after, how long does it take to reach the thermals you mention? Is it right away within seconds or does it take a long time? Yeah, even when booting windows it can peak 70-80 degrees. And if I run a game instantly after boot, and have HWMonitor running in the background it can tell me max degrees has been 98 degrees, as it did last night.

lumineZ · Nov 15, 2017

Make the pump run at max speed and touch the pump housing with your finger, you should feel a slight vibration.
Or you can take a philips screwdriver with a plastic hard handle, place the tip of the screwdriver on the pump, and press your ear against the handle. You should now hear a hum. (old car mechanic trick)
But I dont think the pump is faulty since the rise of temps is so rapid. It should take 3-5 min to reatch the temps if the pump has died.

Since you reatch this temps within seconds its one out of three or all three that is faulty:

1. CPU TIM between cpu die and IHS is bad from the factory. RMA it for a new one or delid it.
2. CPU waterblock is mounted incorrect.
3. Waterblock thermal grease is somehow "incorrect"

thomas.kjonsvik · Nov 15, 2017

lumineZ :

I see. But it's no way it's not running, the temp wouldnt just stop at 98 degrees if it didnt work. And because I have tried multiple cooling solutions and also applied and removed thermal paste several times. But according to Intel, my CPU is good, because 100 is max temp so, I wouldnt get a new one I guess.

And yeah, after I stop a benchmark, temperatures drop almost instantly back down to normal so. I think the cooling is fine, it's the CPU.

But once I come home today, I will check voltage settings etc, could be a fault there. And I will post here once i've done it.

Thanks so far, to all of you for amazing support!!

lumineZ · Nov 15, 2017

Asus motherboards for the 7700k tends to run high Vcore straight out of the box. Mine did...

thomas.kjonsvik · Nov 15, 2017

lumineZ :

Yeah, I'm not that into it actually. But i've been told this, so it's worth checking, no doubt! Let's just hope thats the solution, would be great!

biglizard · Nov 15, 2017

thomas.kjonsvik :

I think your cooler is starved of air, that case has terrible air flow.

Try taking off front cover.

thomas.kjonsvik · Nov 15, 2017

biglizard :

thomas.kjonsvik :

I think your cooler is starved of air, that case has terrible air flow.

Try taking off front cover.

I also suspectet that. And I guess I could try removing it and see if there is any difference. Doubt it will be 20 degrees tho.

thomas.kjonsvik · Nov 15, 2017

Here's my data gathered from BIOS, and I cant really see any high voltage or anyhting like that. And I also checked in CPU-Z when benching it with CINNEBENCH, and I got 1.136 V on Core Voltage. Sorry that the picture is rotated.

lumineZ · Nov 15, 2017

Not a volt problem.

Dont worry, its not your case, since you are on a waterloop and this does not happen over 1 or 2 hours as you sayd, but right away even if the computer has been turned off over night.

So I am back to the 3 points..

1. CPU TIM between cpu die and IHS is bad from the factory. RMA it for a new one or delid it.
2. CPU waterblock is mounted incorrect.
3. Waterblock thermal grease is somehow "incorrect"

You say you have cleaned and reapplyed the thermal grease so that leaves nr.3 out off the picture.

I am sadly 99% sure it is nr.1 that is correct...

So either RMA it and get a new one, or fix it with a delid.
Alot of people will vote against it since that will void your warrenty etc etc etc...

But to be honest, it not hard to do if you just READ and go slow, watch some few movies about it.

Eximo · Nov 15, 2017

About fifteen minutes for me using the classic razor blade method. I didn't use a fancy de-lid tool and I used high end thermal compound, not liquid metal.

I still have one warm core, might be due to a slight defect in the shape of the heatspreader or just that core isn't as efficient as the others.

lumineZ · Nov 15, 2017

Eximo :

Might I ask your temps on all 4 cores (idle and full load) + Vcore + ambient temps?

Would be nice to see how mine stack up with LM

You got more guts than me tho, I did not risk the razor method so I used a "fancy" delid tool

kareem.farouk · Nov 15, 2017

my 7700k hits 9x C while rendering, i think it is normal .
for voltage try not to exceed 1.28v , i have worked with 1.1 already for all purposes except rendering(it seeks high power 1.28-1.3) at stock speeds

what is your room temp ?

Eximo · Nov 16, 2017

lumineZ :

I had a look at your CPU-Z listing, beating the crap out of mine, but from what I have seen, I was lucky to reach 5.0Ghz with mine at all. As usual I ended up with a CPU that isn't that great (I think it really is just that one core too)

I am running a somewhat dangerous 1.416 Vcore (actually set a little lower then that I had to use LLC to keep stability) it will occasionally read 1.428, but quite rarely. Though I do have the uncore running at 4.5Ghz as well.

Idling is around 30C, it varies on how cold the ambient is, right now that is about 68F, but in the summer months it wasn't too different, and it never really idles since there always seems to be some amount of activity keeping it boosting about halfway.

Highest maximum I have seen under an extended bench is 81C on my problem core. Usually more like 75-78C for the others. Typically max gaming load is 78C, and that is very momentary. Much better than the 91C figures I would see before.

I used ThermalGrizzy Kyronaut under and on the heatspreader, and have left it free floating, so only the retention bracket and waterblock hold it on.

lumineZ · Nov 16, 2017

Ouch. Sounds like you have been alittle unlucky with that 7700k Eximo.
Thats high Vcore to be able to run at 5Ghz.

I will do a test tomorrow at 1.428 Vcore and see what temps I get.

I am using the Thermal Grizzy Conductonaut on the cpu die and Thermal Grizzly Kryonaut on the IHS.
Same as you with the IHS free floating.

Did you also remove the black silicone to bring the IHS closer to the die?

lumineZ · Nov 16, 2017

kareem.farouk :

90+ Celcius on stock speeds and Vcore around 1.28 - 1.3 is not normal. 80 and below is normal. Anything over 80 - 85 is high.

lumineZ · Nov 16, 2017

Eximo:

Did a quick test and here is the results for me:

Had higher Vcore than you cause I typed it in wrong

Remember to click on the "zoom" button or it is hard to read.

This is my 24 / 7 overclock with mutch nicer temps

Eximo · Nov 17, 2017

Yeah, I'm sure the difference there is the liquid metal. Temperature is not my problem, but stability, and I don't want to use any more voltage. I would like the chip to last at least a little longer, I usually go two to three years between upgrades.

I saw a decent chart that put the voltages I need to be on the potato side of things. Voltages like you are running are more typical.

Moy old i7-4770k had temperature issues, but I never delidded it, I suppose I should now that the warranty has expired. But I had intended to give that machine to my brother at some point. (Though now it looks like we are laptop shopping, screen failure of all things)

Extremely hot i7-7700k. Tried everything.

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