Not sure if it's just me but there's a bug in the Prime95 that won't stress full RAM unless I run it in admin mode.

Seems like something else is running in the background and using quite an amount of your RAM.
Usually Prime95 won't cause that. When I click stop my RAM usage will go down to a very low percentage.
Rebooting Windows will fix this or not?

I think better use the free RAM of 12GB as showed in the Open Resource Monitor screen, keep the balance for the rest of the system.
I'm thinking that if you set it too high the OS will start using pagefile and memory won't be tested properly.

Post the SS here with P95 screen, task manager etc.
Stressing 10000MB looks kinda small for a 16GB RAM.
Should take 95%+.

This post has been edited by owikh84: Jan 2 2018, 10:38 PM

Seems like the thermal results vary from one review to another so I think we will need to read more reviews to compare. Different review sites used different CPUs and software to stress the coolers.

Mainstream Intel CPUs from Ivy Bridge till the newest Coffee Lake themselves have inefficient stock thermal paste and excessive gap underneath the IHS so these factors also need to be taken into the account. The thermal results won't be as accurate as the ones tested on the enthusiast-class CPUs (ie. 3930K etc) with soldered thermal interface. Furthermore, bigger chips like the 3930K have larger contact surface than the smaller CPUs.

G3D: performs similarly compared to Kraken X62 (based on 4790K)

Vortez: beats Kraken X62 by 13C (based on 3930K)

OC3D: outperforms Kraken X62 by 14.5C (7700K @ 5.0GHz)

This post has been edited by owikh84: Jan 9 2018, 12:57 PM

Thanks for your kind words... ehh without support from you guys this thread will be dead.
Regarding the low vcore 5GHz OC, I think I am just lucky to have found a nice chip.
No need to resell and buy another chip just to bin for better one like the old days.

Yes, rechecking my paypal account found that I really wasted a lot of money just to buy from forumers who were willing to let go their good chips. My aim has been 5GHz at low vcore until now lol. Below is the list:

2600K 5.7GHz - $700 USD from XS forumer

3770K 6.75GHz - $600 USD from XS forumer
3770K IMC 2800+ - $450 USD from XS forumer
3770K IMC 2933+ - $480 USD from XS forumer

4770K x2 new - both were bad chips, didn't want to spend money to buy again
6700K x1 new - bad chip, lazy to bin
7700K x4 new - only one of them doing 5GHz @ 1.28v+
8700K x1 new - first chip strikes silicon lottery

Good cooling is one thing, but most importantly is of course draw of luck in finding a decent chip with low stock voltage (VID).

This post has been edited by owikh84: Jan 12 2018, 11:24 PM

So, I went ahead and delidded my 8700K. It was super easy with the Rockit 88 delid tool, coupled with Coolaborator's Liquid Pro applied between the CPU Die-IHS and Kryonaut for IHS-waterblock.


I managed to get a 12C drop in the load temperatures at 5GHz @ 1.280v. Because lower temps means less electrical leakage, I think I can still tune the vCore down a bit and go for higher OC like 5.1-5.2GHz.



This post has been edited by owikh84: Jan 20 2018, 08:47 AM

Delidded 8700K OC @ 5.1GHz requires exponential vCore bump, 1.344v from 1.280v (5.0GHz). Average load core temps registered at 67.5 degrees Celsius, when stressed with Prime95 v29.4 AVX for 3 hours.



5.2GHz @ 1.408v


5.3GHz @ 1.472v


This post has been edited by owikh84: Jan 25 2018, 03:47 PM

Hi bro, welcome to OC club.
With the auto BIOS settings, you let your motherboard to decide your voltages etc.
Depending on your board, auto CPU voltage (vCore) might be way set way too high than your CPU actually required.
For 4.5GHz, try manually setting the vCore at 1.1-1.2v (chip dependent).
For 5.0GHz OC guide, read this (shared in post #1 of this thread).

First of all, it is advisable to update the BIOS to to the latest version. For your board, F5f: https://www.gigabyte.com/Motherboard/Z370-A...v-10#support-dl

Secondly, you have to go inside BIOS and set manual settings such as CPU core ratio/multiplier, core voltage, Load-line Calibration LLC, disable those power saving features such as C1E etc.

This post has been edited by owikh84: Jan 25 2018, 11:38 AM

G.Skill TridentZ RGB @ DDR4-4400 CL19 32GB @ 1.50v



SPI 32m stable


But when it comes to Memtest HCl, I only managed to settle at 19-21-21-39-2T @ 1.50v.
Tighter RAM timings will only give errors after a few minutes.






This post has been edited by owikh84: Jan 27 2018, 04:49 PM

High end rig for sale!
It would be better if you could list down the parts included as well as some pictures showing the setup etc.
I also noticed you have a WTS thread separately, perhaps you can put up more details there.

Both ROG Strix Z370-F (RM875) and AORUS Z370 Gaming 5 (RM932) have almost identical VRM configurations (8 power phases), good looking RGB illumination, but the Strix doesn't have Debug LED for error troubleshooting and lacks one M.2 sockets compared to the Gaming 5 (triple M.2 PCIe 3.0 x4).

Or if you don't mind an inferior RGB, take a look at the ASRock Fatal1ty Z370 Gaming K6 (RM830) that has a stronger VRM (12 power phases) and comes with Debug LED.

CM Nepton 240M AIO with 2x stock fans

Delidded 8700K OC @ 5.0GHz @ 1.296v
Idle 38C, load 73C.
Load temp for a non-delid chip should be about 11C hotter than the above result, so 83C.

Z370-F at Lelong


Gaming 7 is good, same tier as the ROG Apex. Previously it had VRM overheat issue but I heard it has been fixed in the new batch.

ASRock has two authorized distributors in Malaysia, SunCycle is good, AMT is bad.

Good deals for those who are looking for CPU+MB bundle

Welcome to the 5.0GHz OC club
What's the exact model of your NZXT AIO cooler?
How do your CPU temperatures look like?

Your CPU is running at 5GHz constantly even on idle because power saving features have been disabled in the OS and BIOS settings.

In OS, go to Power Options, select Power Saver power plan.

In BIOS, go to CPU Configurations, look for power management settings, enable Enhanced Intel Speedstep Technology (EIST) and C1E.

This post has been edited by owikh84: Apr 19 2018, 10:57 AM