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8600K 4 cores 5Ghz, thermal limit. Worth delid without LM?

It can easily get 4.8Ghz with all cores, or add another 0.4v for 5Ghz with 4 cores, but even with 4 cores it gets too hot.

It's under a ND-D14 with a single 140mm fan, but it barely feels warm to touch, so I guess the heat is not being conducted efficiently in the first place.

I really don't want to have to delid, but that layer of black glue might be the culprit... if I do, I really don't want to use LM, so it'll be relidded with MX4.


Will this be worth it, i.e. will it stay under 80°C with all cores at 5Ghz?

2020-10-10 15_26_47-Window.png

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Why not use LM? I did that almost 2 years ago and my thermals dropped like 15C when applying LM. Also it still holds up really well after all this time

I dont think it will be woth it repasting it with normal paste.


Also why would you consider disabling 2 cores? your performance will drop significantly when you do that, compared to just dropping the clocks

My Gaming PC:
Asus Strix RTX 2080 2150MHz core, 8000MHz memory (3080 soon :D)
i7 8700k @4.95GHz delid + a fuckton of voltage (1.375V LLC3, yeah its a below average OCer) - NZXT x72
G.Skill Trident Z @3450MHz 32GB CL15 (3466 and 3200 mixed CL16) OC
Asus Maximus X Hero
Samsung 840 PRO 128GB (Windows)

Crucial P1 M.2 NVME 1TB (Games)
Samsung 860 EVO 1TB (Games)
Samsung 860 EVO 500GB (Stuff)
Seagate Backup Plus 8TB (Shadowplay and Backups)
Corsair RM-850X

Lian Li O11Dynamic
Dell S2721DGF 165hz 1440p / ASUS ROG SWIFT PG258Q  240hz, BenQ ZOWIE XL2720 144hz, Acer S242HLDBID 60hz

Logitech G Pro Wireless (Corepad Skatez) / Razer Viper Ultimate / Endgame Gear XM1 / Cooler Master MM711
Ducky One 2 Mecha Mini (MX Black) / One 2 TKL (Silver/Blue)


My Silent Multimedia PC:

Ryzen 2700 @4GHz 1.337V - Noctua NH-D15

Powecolor RX 5700 XT Red Devil 2030MHz Core, 935MHz Memory, undervolt

G.Skill Trident Z 3200MHz

MSI B450 Pro Carbon AC

Kingston A400 240GB (Windows) + 480GB (Games)

Corsair RM-650

Be Quiet Silent Base 601 with 1x 140mm Noctua exhaust from my D15

Samsung Q60R (4k 60hz for Windows, 1440p 120hz Freesync for gaming)

Logitech G Pro Wireless

Ducky One 2 TKL (Silver/Blue)


My Notebook:

Asus Zephyrus G14 Top Spec 120hz

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I have a hunch it's your cooler more than poor heat dissipation from the CPU itself. 


Keep in mind this cooler does not have PWM fans and this could also be contributing to your problems. It's difficult to fathom an $80 cooler that doesn't come with PWM fan control.


Plus, the cooler is old and there are better air coolers on the market that have superseded it's performance characteristics in the past few years. 


I would recommend a 280mm water cooler with PWM fans for fine tuning. Right now, your fan spins at a static speed, regardless of load, which is not good, especially if you are overclocking on a chip like that. 


All that being said, you have a couple options, IMO, from here:


1) Buy two new PWM 140mm fans for your cooler and make the fan curve more aggressive to deal with the increased thermals from your OC

2) Upgrade to a liquid cooler and a HEATKILLER water block, something like a 280mm rad should fit the bill. 

3) Proceed with your de-lid. Although this may be a little risky and plus once you de-lid your CPU its going to kill your resale value

HP Z820 workstation - dual CPUs - 24C / 48T @ 3.5GHz (turbo) and octal channel 64GB ecc ram, 300GB raid 0 x 4 SSD, water cooled (from the factory), MSI Radeon RX 5700 XT Gaming X 8GB GPU






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Not only is delidding risky, it’s also expensive. Don’t get me wrong, I understand why you would do it. Personally, I would just get a better cooler, like @Storm-Chaser said.

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