Cant get my i7 8700k to overclock

rodders · 3 Dec 2018 at 18:27

Hi Guys,

Trying to overclock my 8700k, followed an online guide and a youtube guide. Both say to do the same thing, neither work. If I run prime 95 it just crashes and dies.
Cant even get 4.8, let alone 5.0!

The bits I have:

Team Group Night Hawk LED 32GB (2x16GB) DDR4 PC4-24000C16 3000MHz Dual Channel Kit

Gigabyte Z370 AORUS Gaming 7 Intel Z370 (Socket 1151) DDR4 ATX Motherboard

Intel Core i7-8700K 3.7GHz (Coffee Lake) Socket LGA1151 Processor - Retail

Noctua NH-D15 Dual Radiator Quiet CPU Cooler with two NH-A15 Fans

Any help appeaciated

Apone70 · 6 Dec 2018 at 07:33

I have same CPU and same motherboard so hopefully I can help. Have you tried using the CPU upgrade feature in the bios or are you manually clocking it?
I can get 4.8ghz stable at 1.29 vcore and 5ghz stable at 1.4v. That might get a little hot unless your delidded. I think I would be in the low 80's before I delidded and now high 50's. I'm using a 240mm Corsair AIO.

rodders · 6 Dec 2018 at 11:55

I'm at 4.8 with 1.3v core. Doesn't like prime 95 but in another post someone mentioned a specific version, so I will check what I have.
All other stress tests are fine.
Tried 5.0 with 1.32 but it didn't like it. Didn't want to push much more voltage.

Apone70 · 6 Dec 2018 at 12:00

I was using 1.4v at 5ghz before I delidded but only when benchmarking not for 24/7 use. Stick the v core to 1.4 and run Cinebench and see if it passes

Awahwah · 29 Jan 2020 at 12:07

I'm running 5ghz with 1.35v (Bios), sinks a little lower on load.

Doug2507 · 8 Nov 2020 at 20:40

If it runs lower on load then not a big deal, can probably adjust load line cal to get it nearer. Can't remember what giga llc options are (or how accurate they are) but better lower than higher.

You're most likely on a more recent version of p95 which will be AVX. Unless you're using software that uses AVX instruction, just ignore and use your rig as intended.

If you're [email protected] then that's about as good as your chip is, it won't scale well to push higher (probably looking at 1.37+ just for 4.9). If that's a non AVX stable vcore then just add around 0.025-0.035vcore for AVX loads if temp allows (and if you need AVX).

The Asus rog benchmark test suite is pretty good for overall stability with regard to gaming and usually covers stability issues with slightly harder to run games.