8700k Hero x can't get stable OC

[Toxic_Cobra]

Hi,
I've been trying to overclock my new 8700k and Maximus Hero X board but it always seems to crash. Right now I have it at 5Ghz on 1.35v (to rule out voltage) with LLC at lv 6 and max long/short power limit at max. Earlier I had it at 4.9 Ghz 1.285v but both OCs crash occasionally. I can play games and stress test but it will inevitably crash, what do you suggest I change? Don't know that much about this bios as I came from a MSI board where I just had to change voltage and frequency. My whole rig is watercooled and I've changed everything in my system accept my PSU (evga 750w g2), drives, and case. I don't want to delid this chip if I can't even get it stable. Also should I have a AVX offset? I'm watercooled so temps shouldn't be an issue, but stability is very important. I haven't touched cache OC as I don't know if that makes a difference.
Thanks

 

[geofelt]

How high you can overclock a I7-8700K is primarily determined by luck in getting a good chip.
My suggestion is to reduce the multiplier enough to be stable.
Or, plan on running closer to 1.4v.
FWIW:
as of 12/01/2017
What % of I7-8700k chips can oc
at a aggressive vcore near 1.4 or so and delidded
4.9 99%
5.0 72%
5.1 43%
5.2 16%
5.3 3%

 

[4Ryan6]

Hi,
I've been trying to overclock my new 8700k and Maximus Hero X board but it always seems to crash. Right now I have it at 5Ghz on 1.35v (to rule out voltage) with LLC at lv 6 and max long/short power limit at max. Earlier I had it at 4.9 Ghz 1.285v but both OCs crash occasionally. I can play games and stress test but it will inevitably crash, what do you suggest I change? Don't know that much about this bios as I came from a MSI board where I just had to change voltage and frequency. My whole rig is watercooled and I've changed everything in my system accept my PSU (evga 750w g2), drives, and case. I don't want to delid this chip if I can't even get it stable. Also should I have a AVX offset? I'm watercooled so temps shouldn't be an issue, but stability is very important. I haven't touched cache OC as I don't know if that makes a difference.
Thanks

5ghz is an agressive hope for OCing that CPU if it has not been delidded.

I'm water cooled so temps shouldn't be an issue, but stability is very important.

What is the extent of your water cooling setup, rads, loops, etc.

What exactly are your stress test temperatures?

This guy has some good information when it comes to the Maximus X Hero M/B, but even he is running a delidded 8700K.

https://www.youtube.com/watch?v=CoUtA7DKXhU

 

[Toxic_Cobra]

Hi,
I've been trying to overclock my new 8700k and Maximus Hero X board but it always seems to crash. Right now I have it at 5Ghz on 1.35v (to rule out voltage) with LLC at lv 6 and max long/short power limit at max. Earlier I had it at 4.9 Ghz 1.285v but both OCs crash occasionally. I can play games and stress test but it will inevitably crash, what do you suggest I change? Don't know that much about this bios as I came from a MSI board where I just had to change voltage and frequency. My whole rig is watercooled and I've changed everything in my system accept my PSU (evga 750w g2), drives, and case. I don't want to delid this chip if I can't even get it stable. Also should I have a AVX offset? I'm watercooled so temps shouldn't be an issue, but stability is very important. I haven't touched cache OC as I don't know if that makes a difference.
Thanks

5ghz is an agressive hope for OCing that CPU if it has not been delidded.

I'm water cooled so temps shouldn't be an issue, but stability is very important.

What is the extent of your water cooling setup, rads, loops, etc.

What exactly are your stress test temperatures?

This guy has some good information when it comes to the Maximus X Hero M/B, but even he is running a delidded 8700K.

https://www.youtube.com/watch?v=CoUtA7DKXhU

Hi,
I've watched that guide and read countless others with no hope. I'm fine with 4.9 Ghz, I just want a stable OC! My water cooling setup is one 45mm 420 rad (3x 140) and a 60mm 240 rad (2x 120) all cooled with push noctua nf-a14 fans with my d5 pump at full speed. My 1080 ti ftw3 is also in my loop, but I think it's installed incorrectly as its power temp gets as high as 68c in GTA (almost the same temps as before I wc'd it). When I start a stress test with the exact settings shown in the video provided, temps spike up to 88c for a second then drop down to 65-70c while the test continues. With my old chip (6800k) I'd get idle temps of 25-30c but this chip seems to never get close to that, minimum being 40c! Also do I need a AVX offset? I've read people talking about getting your OC stable then it crashing as soon as you launch an AVX application, is that just for if your cooling is insufficient? My main point of writing this was to see if there's anyone who has the same board as me and knows of any settings I might have looked over, that would cause instability. I might delid my 8700k, not like I ever used my warranty on my old chip. I just need to find a local delidder, I'd hate to spend $50 on parts to delid just one chip.

 

[geofelt]

If your idle temperatures are 40c. I think you have a problem with your cooler.
Idle should show 10-15c over ambient.

Check that your pump is working and that you have not used too much paste.
Look to see that all your radiators are getting sufficient fresh air.
Any cooler needs a good supply of fresh air to do its job.

Try taking the case covers off and direct a house fan at the innards. If that helps, look to case cooling solutions.
If you are going to have the 8700K delidded, have it done professionally.
Silicon lottery does this for $45.
In addition, you can have your chip binned, so you know what it can do:
https://siliconlottery.com/collections/all/products/delid?variant=47320026444

 

[Finstar]

Simple, just give it more voltage.

 

[Toxic_Cobra]

If your idle temperatures are 40c. I think you have a problem with your cooler.
Idle should show 10-15c over ambient.

Check that your pump is working and that you have not used too much paste.
Look to see that all your radiators are getting sufficient fresh air.
Any cooler needs a good supply of fresh air to do its job.

Try taking the case covers off and direct a house fan at the innards. If that helps, look to case cooling solutions.
If you are going to have the 8700K delidded, have it done professionally.
Silicon lottery does this for $45.
In addition, you can have your chip binned, so you know what it can do:
https://siliconlottery.com/collections/all/products/delid?variant=47320026444

Damn, I thought I had a stable overclock! I just set it to 4.9 @ 1.29 and ran a few tests. This was with my fans at the default settings in my enthoo luxe. This was with my fans at 100% and my front, side, and top case panels taken off. After that I ran cinebench and then started up prime95, while it was running I started to type a reply but it crashed. I just bumped it up to 1.295. any other settings I should consider changing? this exact OC crashed on me before.
Maybe the high temps is all due to a faulty pump? hopefully EK will send an advanced replacement RMA and a new pump fixes it.
I was going to send it to siliconlottery, but I don't want to have no system for a week! seems like an easy process, just need to find someone who has the tools.

 

[4Ryan6]

My main point of writing this was to see if there's anyone who has the same board as me and knows of any settings I might have looked over, that would cause instability. I might delid my 8700k, not like I ever used my warranty on my old chip. I just need to find a local delidder, I'd hate to spend $50 on parts to delid just one chip.

I used his guide to see if there were any settings I should be adjusting to get a quick reference to the Maximus Xs bios setttings. I then decided to just forego the instructions and go back to my old ways to see if they would hold true with the 6 core CPU and they do. Simply put I see you're running 3466 memory, if you are running XMP profile you can run cooler if you'll manually set your DDR4 memory to 2666mhz which is the design specifications of the 8700K. You can run timings of 15, 15, 15, 35, at 1.2v DDR4 slot voltage and that will lower your temperature by a minimum of 1c across the cores, plus lower the stress on the CPU by not overclocking the CPUs memory controller.

http://www.tomshardware.com/forum/i...r-effect-raised-multiplier-cpu-overclock.html

 

[Toxic_Cobra]

My main point of writing this was to see if there's anyone who has the same board as me and knows of any settings I might have looked over, that would cause instability. I might delid my 8700k, not like I ever used my warranty on my old chip. I just need to find a local delidder, I'd hate to spend $50 on parts to delid just one chip.

I used his guide to see if there were any settings I should be adjusting to get a quick reference to the Maximus Xs bios setttings. I then decided to just forego the instructions and go back to my old ways to see if they would hold true with the 6 core CPU and they do. Simply put I see you're running 3466 memory, if you are running XMP profile you can run cooler if you'll manually set your DDR4 memory to 2666mhz which is the design specifications of the 8700K. You can run timings of 15, 15, 15, 35, at 1.2v DDR4 slot voltage and that will lower your temperature by a minimum of 1c across the cores, plus lower the stress on the CPU by not overclocking the CPUs memory controller.

http://www.tomshardware.com/forum/i...r-effect-raised-multiplier-cpu-overclock.html

Wow that article helped temps a lot, minimums going to mid 20s. If I delid will it affect minimum temps at all? as in could I run a memory overclock and keep these low minimums? Again, I thought I had a stable overclock but I just got a BSOD playing gta v. I have it at 4.9 GHz @ 1.295v, should I try adaptive voltage? If so where do I start, + or - and Also when I set an AVX offset my clockpeed doesn't come back up to 4.9 GHz so I set that to 0.

 

[robhoeth]

I have an 8700k delided with rocket 88 coper IHS and the maximus hero X.

Stable for over 8 hours on Prime 95 at 5.252 GHz. Don't be too afraid of voltage when you get the cooling sorted out.
Are your water blocks in need of cleaning? Mine got sludge in the fins before and they are made to be opened and cleaned.

My current settings:
VCore 1.435 - (What Silicone Lottery uses for 5.3 GHz)
Adaptive Voltage -0.1 offset with the max set at the 1.435 volts above.
LLC - 6
101.00 BLCK frequency
52 multiplier
AVX - 2
Max temps I hit are 80C and idle below 30C when coolant gets time to cool with D5 pump and a 240mm and a 360mm radiator.