i7 8700k Overclocking 4.7ghz

shankly1985 · 18 Dec 2017 at 19:36

Hello at stock settings with ASUS Multicore Enhancement I had all cores boost to 4.7ghz but I didnt take note of the voltage but temps was below 60c with Corsair H100

I went ahead and enabled XMP for my DDR4 Ram to OC to 3200mhz and now my CPU only boost at all core 4.4ghz
Do I need to manual OC now because of enabling XMP?

mickyflinn · 20 Dec 2017 at 11:02

Yes manual overclocking is better to fine tune stability, overclock your cpu first then enable Xp .

Should be able to find a guide on the web

8 Pack · 20 Dec 2017 at 12:34

Enable xmp and OC at the same time is the best option as OC of cpu and memory effect each other.

Should be easy.

Set xmp
All core 47
Cache 44
Digital power cpu curent cap 140%
Vcore 1.3v
Vccsa 1.12
Vccio 1.1
Cpu standby 1.1
Dram voltage 1.4

Done.....

shankly1985 · 20 Dec 2017 at 13:28

Thanks guys

shankly1985 · 25 Dec 2017 at 18:44

8 Pack said:
Enable xmp and OC at the same time is the best option as OC of cpu and memory effect each other.

Should be easy.

Set xmp
All core 47
Cache 44
Digital power cpu curent cap 140%
Vcore 1.3v
Vccsa 1.12
Vccio 1.1
Cpu standby 1.1
Dram voltage 1.4

Done.....

Hello
I have followed your settings and everything been fine for couple days. What I have noticed though when playing games all cores will be at 4.7 but randomly one core will drop down to 4.4. Temps are very good all cores below 60c

8 Pack · 25 Dec 2017 at 19:45

Maybe try with zero avx offset.

You can look check windows power plan.

Some games are not using all cores so they may also drop when not loaded.

Smffy · 25 Dec 2017 at 23:40

8 Pack said:
Enable xmp and OC at the same time is the best option as OC of cpu and memory effect each other.

Should be easy.

Set xmp
All core 47
Cache 44
Digital power cpu curent cap 140%
Vcore 1.3v
Vccsa 1.12
Vccio 1.1
Cpu standby 1.1
Dram voltage 1.4

Done.....

With your settings you always have cache 44 min/max - is this stability or performance as I assumed higher would be better but not tested much yet.

Running the same ratio as core now (51 for 24/7 use).

Cheers!

8 Pack · 29 Dec 2017 at 18:27

For stability yes. Core can often go higher then. You can gain some efficiency by overclocking cache too so after you max out core then test incremental increases in cache.

Smffy · 29 Dec 2017 at 20:35

8 Pack said:
For stability yes. Core can often go higher then. You can gain some efficiency by overclocking cache too so after you max out core then test incremental increases in cache.

Coolio, cheers pal.

hyperseven · 30 Dec 2017 at 00:58

Any idea what the Asrock equivalents to

Digital power cpu curent cap 140%
Cpu standby 1.1

would be?

shankly1985 · 2 Jan 2018 at 14:00

Hello been running stable with all this set
Set xmp
All core 47
Cache 44
Digital power cpu curent cap 140%
Vcore 1.3v
Vccsa 1.12
Vccio 1.1
Cpu standby 1.1
Dram voltage 1.4

But I noticed even with voltage at 1.3v in the bios Hwinfo64 is reporting max 1.485 is Hwinfo just reading things wrong here?

hyperseven · 2 Jan 2018 at 14:08

shankly1985 said:
Hello been running stable with all this set
Set xmp
All core 47
Cache 44
Digital power cpu curent cap 140%
Vcore 1.3v
Vccsa 1.12
Vccio 1.1
Cpu standby 1.1
Dram voltage 1.4

But I noticed even with voltage at 1.3v in the bios Hwinfo64 is reporting max 1.485 is Hwinfo just reading things wrong here?

Isn't that the vid?

Noticed that too, been using CPUz for my readings.

shankly1985 · 2 Jan 2018 at 14:08

Ok So am readying Hwinfo shows two CPU voltages Core VID and Vcore
Core VID is jumping 1.4 while Vcore is tiny bit above what I set 1.3v

shankly1985 · 2 Jan 2018 at 14:10

hyperseven said:
Isn't that the vid?

Yeah should I just ignore that setting? Am just not sure how accurate Hwinfo really is. Its reporting my PCH temp is 45c while the Asus software is only reporting 37c

John11 · 2 Jan 2018 at 21:16

got any setting for OC for the gigabyte z370 ultra gaming with the i7 8700k for 4.7mhz

BriT · 2 Jan 2018 at 21:21

https://www.youtube.com/watch?v=ay-cn_ChPa4 get you started

ChocAndGray · 2 Jan 2018 at 21:32

shankly1985 said:
Ok So am readying Hwinfo shows two CPU voltages Core VID and Vcore
Core VID is jumping 1.4 while Vcore is tiny bit above what I set 1.3v

You can ignore the VID reading in your case. It's the Vcore that you want to pay attention to as that is the actual voltage being fed to your CPU.

shankly1985 · 8 Jan 2018 at 23:34

Hello is 1.2 VCCSA and 1.2 VCCIO too much ?
I been getting a GPU driver crash only in one game FORZA 3 and google people seem to have fixed it by increasing these voltages to make the system more stable. I was using 1.1 on both perfectly fine apart from this one game.

This game does really push my system a lot more then other games I would say so I can kinda see why this game would crash a unstable system.

geordiejc · 10 Jan 2018 at 23:52

8 Pack said:
Enable xmp and OC at the same time is the best option as OC of cpu and memory effect each other.

Should be easy.

Set xmp
All core 47
Cache 44
Digital power cpu curent cap 140%
Vcore 1.3v
Vccsa 1.12
Vccio 1.1
Cpu standby 1.1
Dram voltage 1.4

Done.....

Great to see OCUK staff helping out in posts like this.

8 Pack · 11 Jan 2018 at 00:14

1.2 is fine although usually only needed with 3600+ mems or 64gb capacity and 3466+ mhz.