What’s wrong with I7-7700K and its temperature’s…

[Sp1]

Hello Everyone,

I know this is not directly Asus motherboard related but I can use some tips from you guys.

I build myself a new PC around 50 days ago, CPU is I7-7700K and motherboard Asus Z270G and the cooler is a Cryorig H7. The other components are not relevant for this topic I guess but here is the build: https://pcpartpicker.com/b/MV7WGX and a short video of the rig: https://www.youtube.com/watch?v=fddIUJgDw3M

First couple weeks the temps where fine, till I start playing some games, and temperatures where hitting to 88C, I did benchmark but not heavily, so I changed the vcore to 1.250 volts manually in UEFI since the motherboard was putting it on 1.365 volts. Also changed the fan on Cryorig H7 to another one with more static pressure, cfm and higher RPM speed. Temps went to 80C after all this. This is on a CPU without any form of overclocking.

Last 2 weeks we have nice weather in the Netherlands and temperatures started to rise outside, but temperatures also started to rise on my CPU. So to be sure I downloaded Realbench and did a stress test, believe me guys, I knew temperature’s where bad on a I7-7700k but this bad? I had to break the stress test because the CPU was hitting 94C.

I did build a lot PC’s years ago but not last decade or two 😛 so I might have lose my touch, I decided to reseat the cooler and this time I used Noctua NT-H1 as heat sink compound instead of Cryorig’s CP5, and this didn’t changed much, only 2C less with stress test, had to break the stress test again, I don’t want to test its limits.

So far the trouble I got, now the planned solution:
I ordered a delid kit from Rockit Cool and received it 2 days ago. Also ordered a Corsair H100i v2 and Coollaboratory Liquid Ultra, these will arrive tomorrow or Monday.

The reason for 240mm AIO is the ecstatic’s and limited room I got in my case. I was thinking to get NZXT x52 but a friend of my told me he was not happy with CAM software, so after reading some reviews decided to get the H100i v2.

Than as always I was being stupid not checking here to see how my Z270G Strix will work with Corsair’s Link software, now I see there are some issues with this AIO on Asus boards, I can figure out how to fix that I guess.

I wish I could test the temperatures after the delid with the Cryorig but my motherboard needs to get out the case each time I do anything to the cpu, so I am not going to do that, the motherboard did already get in and out too many times for my taste.

I would really appreciate if you guys have any tips for me on Z270G UEFI settings and so on.. I don’t know what temperatures I will see, but I am sure it will drop some.

RMA is not an option, I don’t want to wait till Intel respond to anything, while we speak of Intel… WTF is wrong with the TIM they used?

[Nate152]

Are you setting the cpu voltage or is it on auto ?

If it's on auto it's likely overvolting your cpu some, setting the cpu voltage manually to a lower voltage would decrease temps a fair amount.

Or you can overclock and see how far temps let you go.

[Sp1]

I set it manually @ 1.200V but somehow HWinfo is showing higher, maybe due to the Turbo mode. I will try to overclock tonight to see what happens.

[Nate152]

All right

Yeah that's normal, the cpu voltage won't go lower than the VID unless you use adaptive mode with a negative offset. Try adaptive mode with a negative offset to get it to run at 1.20v, it may even run with 1.15v now that you've delidded.

[Sp1]

We won't run stock speeds after deliding Nate152 😮 thanks for heads up, really appreciatie it 🙂

Just tried to run at 5GHz but that was no go, hit blue screen at startup, with that fancy QR code, never seen one before. This was with core voltage on auto, somehow I cant change the voltages in manual, I must be doing something utterly stupid, I will dive back in to it after this post.

It did manage to run 4.8GHz again voltage at auto and temperatures where acceptable for this cooler. I hit max 77C with ambient temperature of 23C (I should get airconditioning...)

Stress test passed at 4.8GHz


HWinfo:



Going back to UEFI now to see if I can hit 4.9GHz and change the voltages in manually or adaptive.

[Nate152]

Haha, got the overclock itch do you? I do too. 🙂

If you're in manual mode enter the voltage in the "CPU Core Voltage Override".

If you're in adaptive mode enter the voltage in the "Additional Turbo Mode CPU Core Voltage Override".

Show us the whole page of HWinfo so we can see the Vcore as that is the actual voltage applied to the cpu.

Your temps look good so far.

Click the pic to make it bigger.

[Sp1]

Well actually I am a retired overclocker 😮 From AMD K6 and P3 coppermine times, made my own water blocks from copper on a milling machine hard soldered the fittings and top, used car heater radiators and Eheim fish tank pumps, there was not much for water cooling back than, I suddenly stopped building PC's after blowing up a CPU, there was a peltier element and ice involved 😛
Condensation was always in human history but not many of us didn't think about it. I must have some pictures of those days, if I can find it I wil scan and post here some day.

Anyways I am back in the game after almost 20 years :rolleyes:
I can't go pas through 4.9GHz @ 1.400 volts. Max temperature was 84C. If I fall back to 1.350 volts RealBench crashes at start. I might try to tweak some to lower the temperature, I am thinking to go push/pull on the radiator with slightly better fans, water temperature hit 38.4C it is not that high but can be better I guess.

[Nate152]

Thank you Sp@wn

Wow so you know a little bit about overclocking, I think that's cool you made your water loop out of different things, that's very ingenious. 🙂

Your temps are fine for stress testing, you could let it at 4.9GHz with 1.40v and fire up a demanding game and see where temps are, I'm sure they'll be fine.

[Sp1]

Thanks Nate152 🙂 Back than there was nothing to buy for water cooling, so there was a group of people trying to make water cooling happen.

Well I clearly did not hit the silicon lottery, with 1.375 volts RealBench was running but got blue screen around 12 minutes temperature was around 81C at that time. I need to go for better cooling but than I need another case, that is a no go since I like this case and my wife don't want bigger case in the living room either, so my journey ends at 4.9GHz 😛

[Nate152]

Well, you may not have gotten a super good overclocker but at least you hit your goal of 4.9GHz. To be honest I don't notice a big difference in performance from 4.5GHz to 5.2GHz and to upgrade to gain 100 - 200 megahertz wouldn't really be worth it in my opinion.

So yeah be happy with 4.9GHz, that's still plenty fast for your RX 480.

[Sp1]

Oh I am happy with it no problems there, remember I started this topic with 90+C on stock speeds, now I have 84C at 4.9GHz 😄 I like to look at positive side of things lol