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Supermicro Z390 9th Gen OC Guide

By: Steven Bassiri | Overclocking in CPUs, Chipsets & SoCs | Posted: Jan 25, 2019 4:00 pm

Disclaimer Overclocking your CPU technically voids your warranty. However, if you want to overclock and still be covered, Intel does provide an aftermarket overclocking warranty for about $50 located here: (PTPP). However, as of now, we don't see any 9000 series CPUs listed, we have contacted Intel for comment. Overclocking can also damage your CPU, especially if done incorrectly. This guide is about how to overclock, but neither TweakTown Pty. Ltd. nor Super Micro Computer, Inc. take responsibility for damages that could occur; you bare sole responsibility for any damages that may arise.



Have you Overclocked Before?


If you have overclocked before and understand hardware selection and the basics of overclocking, you should skip to the next page, but we will warn you the Intel® 9th Gen Core™ i9-9900K is a special beast. The first part of this guide is for those who want to know what to do before overclocking.



Where do I start?


Supermicro Z390 Overclocking Guide Systems






CPU: You will need a "K-SKU" CPU such as the Intel® 8th Gen Core™ i7-8086K or Intel® 9th Gen Core™ i9-9900K.


Motherboard: While you can buy a Supermicro Z370 motherboard, we highly suggest you buy a Z390 motherboard for 9th generation CPUs. While you are probably here because you bought a Supermicro Z390 motherboard, if you have a Z370 Supermicro motherboard the settings will be similar but slightly different because of the overhaul to parts of the UEFI.


DRAM: If you go to Supermicro's website you will find a tab under "Tested Memory List". We recommend a 3200MHz dual channel kit.


Cooler: We strongly recommend the best watercooling you can buy if you are going to overclock Intel's new octa-core Intel® 9th Gen Core™ i9. We used a Corsair H150i Pro, but we felt it was at its limits at 5GHz with 1.275v. Custom water-cooling should do better, even the kits where you put the cooler together should be slightly better, but they will be much more expensive.


PSU: Intel has changed their power supply design guide as recently as June 2018. When buying a PSU look for PSUs that offer at least 29A on the 12v rail for the CPU, which is about 350W. That is the maximum peak power draw at stock for the Intel® 9th Gen Core™ i9, so take into account overclocking and the amount of power things like your GPU will use.

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