Intel "Coffee Lake" Builders Thread

[AdamK47]

I had time to play around with some overclocking yesterday. MCE on my MSI board is called "Enhanced Turbo". I'm currently using that. Tried for 5.0GHz, but couldn't get it stable at 1.35V with zero AVX offset using sub 32 FFT Prime95 tests. 4.7GHz on all cores is good for me. Ran 7 hours of Prime95 that passed at that speed. Maybe I'll go higher later on.

There is indeed a memory clock wall for Coffee Lake on the Z370. People loved to rag on the 7740X on X299, but I believe Intel knew what they were doing. Memory overclocking seemed limitless on that platform. I had dual channel 4133 @ 16-18-18 timings running perfectly stable on it. 8700K on Z370 won't even do 3800 @ 19-19-19. That's a bummer. Decided to try to find the lowest stable timings at 3600 instead. The memory is currently running at that speed with 14-15-15 timings. Going to run some long term stability tests.

 

[Zucker2k]

I had time to play around with some overclocking yesterday. MCE on my MSI board is called "Enhanced Turbo". I'm currently using that. Tried for 5.0GHz, but couldn't get it stable at 1.35V with zero AVX offset using sub 32 FFT Prime95 tests. 4.7GHz on all cores is good for me. Ran 7 hours of Prime95 that passed at that speed. Maybe I'll go higher later on.

There is indeed a memory clock wall for Coffee Lake on the Z370. People loved to rag on the 7740X on X299, but I believe Intel knew what they were doing. Memory overclocking seemed limitless on that platform. I had dual channel 4133 @ 16-18-18 timings running perfectly stable on it. 8700K on Z370 won't even do 3800 @ 19-19-19. That's a bummer. Decided to try to find the lowest stable timings at 3600 instead. The memory is currently running at that speed with 14-15-15 timings. Going to run some long term stability tests.

Funny, but didn't Asus set a new WR with coffee lake? I say let's wait for the right boards. I also believe I've seen a user report 4000MHz+ on this forum or elsewhere.

 

[AdamK47]

Funny, but didn't Asus set a new WR with coffee lake? I say let's wait for the right boards. I also believe I've seen a user report 4000MHz+ on this forum or elsewhere.

Z390 may do it.

I'd like to see that post and their settings for the 4000+ memory speed.

 

[IEC]

I had time to play around with some overclocking yesterday. MCE on my MSI board is called "Enhanced Turbo". I'm currently using that. Tried for 5.0GHz, but couldn't get it stable at 1.35V with zero AVX offset using sub 32 FFT Prime95 tests. 4.7GHz on all cores is good for me. Ran 7 hours of Prime95 that passed at that speed. Maybe I'll go higher later on.

There is indeed a memory clock wall for Coffee Lake on the Z370. People loved to rag on the 7740X on X299, but I believe Intel knew what they were doing. Memory overclocking seemed limitless on that platform. I had dual channel 4133 @ 16-18-18 timings running perfectly stable on it. 8700K on Z370 won't even do 3800 @ 19-19-19. That's a bummer. Decided to try to find the lowest stable timings at 3600 instead. The memory is currently running at that speed with 14-15-15 timings. Going to run some long term stability tests.

ASRock boards will hit 4000+. Even the cheap ones.

Source:
https://youtu.be/xbLeuxIzxcA?t=410

 

[Zucker2k]

Z390 may do it.

I'd like to see that post and their settings for the 4000+ memory speed.

Have you checked the QVL list of your board?

 

[coercitiv]

I'd like to see that post and their settings for the 4000+ memory speed.

Here it is.

Memory OC seems pretty decent:

Your motherboard QVL list does include 4000Mhz kits from Corsair and Team Group in 2 and 4 DIMM configs, so it's probably a matter of time until compatibility problems are sorted out.

 

[AdamK47]

Thanks for finding the post. It would be nice to get that kind of memory performance (stable). I'm not too concerned with it though. 3600 @ 14-15-15 is fine for now.

 

[Ferzerp]

You are. The normal routine is to set say 1.330v for your 5GHz overclock and then use the (negative) offset to cut down on the volts until you start experiencing instability, then you up it a notch to stay stable. But you set a lower vcore and increased it with a positive offset. Both work to get you to your desired goal which is why I said you could leave it as is, especially since your overclock is really good for that voltage.

This is not how offset voltage works at all on an Intel chipset. You can either set a static voltage, or use an offset (which is an offset of VID, and so changes based on speed/load). They do not work together and are mutually exclusive. A positive offset is just fine. It just means that you are providing more voltage than VID for stability.

 

[Zucker2k]

This is not how offset voltage works at all on an Intel chipset. You can either set a static voltage, or use an offset (which is an offset of VID, and so changes based on speed/load). They do not work together and are mutually exclusive. A positive offset is just fine. It just means that you are providing more voltage than VID for stability.

How's what you said different from what I said?

 

[Zucker2k]

How's what you said different from what I said?

Or, you mean offsets only impact VID voltage, and not manually entered voltage for specific overclocks, cos my findings show that offset impacts whatever is set for the vcore. Is that what you're disputing?

Edit: So for my skylake system, for example, I can set 1.200v and reduce it to 1.165v or less with a negative offset.

 

[TahoeDust]

Or, you mean offsets only impact VID voltage, and not manually entered voltage for specific overclocks, cos my findings show that offset impacts whatever is set for the vcore. Is that what you're disputing?

Edit: So for my skylake system, for example, I can set 1.200v and reduce it to 1.165v or less with a negative offset.

But, if you set your voltage manually and the set an offset, does your voltage still decrease at idle?

 

[Zucker2k]

But, if you set your voltage manually and the set an offset, does your voltage still decrease at idle?

Yes.That's how I've always done it. I always set my vcore voltage manually to have a static voltage to work the offset against. I then proceed to lower the voltage (negative offset, always negative offset for me) until I run into instability then up the offset a couple of notches to be stable. I use Intel XTU for this purpose.

 

[Ferzerp]

VID will, but your applied voltage won't because VID is meaningless with a static voltage set. Basically, you're doing it wrong, and it isn't doing what you think it is. If you set a static voltage, the voltage will be static. Offset is for use with VID controlled voltage. *If* your board allows you to combine the two and it does anything at all, all you are doing is setting a voltage, and then arbitrarily adding or subtracting from the voltage you set. In effect, you are doing the same thing as if you'd just set the static voltage to whatever the static + the offset is. That's all assuming it actually does anything at all with your board.

 

[dbrons]

OK I've got a question. How can I set up a modest OC on my MaximusX Hero, 8700k? I have only enabled XMP so far but would like to try my cpu around 4.5. I've run my Sandy Bridge system stock and processed a WinRar archive the other night that took over 80 minutes. I would like to run the same archive around 4,5 on the Coffee Lake to see how much improvement I'll see.

I'm thinking 4.5 would be plenty fast enough.

Theres an easy overclock setting "fast" can I just try that? Will it conflict with my XMP settings which are:
3603 16-16-16-36 1.35v thanks
Dave

 

[ozzy702]

OK I've got a question. How can I set up a modest OC on my MaximusX Hero, 8700k? I have only enabled XMP so far but would like to try my cpu around 4.5. I've run my Sandy Bridge system stock and processed a WinRar archive the other night that took over 80 minutes. I would like to run the same archive around 4,5 on the Coffee Lake to see how much improvement I'll see.

I'm thinking 4.5 would be plenty fast enough.

Theres an easy overclock setting "fast" can I just try that? Will it conflict with my XMP settings which are:
3603 16-16-16-36 1.35v thanks
Dave

As long as your cooler is decent just run MCE. That will use your single core turbo of 4.7ghz for all cores. Usually that overvolts a bit but it will be stable. As far as your XMP settings, it may or may not work but thus far I'm stable with mine at the same clock speed and timings.

 

[rondocap]

Having a little trouble updating bios on my z370 maximus hero x. Bios 0802, released today. I tried the bios ez flash utility and also the asus software, but cannot get it to update. Keep getting "this is not a valid bios" or "bios image does not match bios rom", or something to that effect.

Any idea? Do I need to rename the cap file? What's going on here?

 

[dbrons]

As long as your cooler is decent just run MCE.

I have an h115 Corsair that I put a couple Vardar fans on and it's working great so far though I havent pushed it.
I'll try the MCE tomorrow, thanks.

I had tried one of the EZ overclocks and it says overclocked 29%, so around 4.0 Anyway, I tried another video archive on my Sandy Bridge, then copied it over to my Coffee Lake and tried it there.
On my old Sandy bridge the file opened in 18 sec, and extracted with Winrar in 5 1/2 minutes.
On the new Coffee Lake the file opened in 9 sec and extracted in 2 min, 40 sec.

So just a bit over twice as fast on my new rig with faster cpu and two more cores. a huge improvement. I'm really happy with this new computer!

 

[RichUK]

If you're struggling to hit 4k on memory, it's likely the IMC holding you back.

 

[AdamK47]

Got the system tuned and ready for some gaming. Using an external HDD enclosure for my 10TB backup drive and an external BD-RW since they don't fit in the new case.

 

[rondocap]

Here is my Coffee Lake build:

8700k with EK open loop liquid cooling, acid green, and red cable mods power supply cables
Asus Maximus hero x wifi ac
Trident Z 3200mhz 16gb ram
1080ti
Sound Blaster AE-5 sound card paired with audioengine A2+ and Sennhesider HD650's

What do you guys think of the acid green liquid cooling color combo with the red cables? I thought it gives it a nice contrast instead of doing it all red or all green. Opinions welcomed.

Still have to fine tune the cable management and RGB strip placement; and possibly get nickel fittings for the loop and cut down the size a bit of some of the pipes.

 

[dbrons]

yeah, red with that green, complementary colors, looks awesome! You've got a similar system to mine I just finished. Mine's not flashy like yours though. I do love the cooler though. I was researching fans for my H115 aio becaue I've always hought the Corsair fans too loud. I learned of EK and the gorgeous coolers they make and decided to buy 2 of their 140mm black Vardar fans and they are great. Dave

 

[rondocap]

Thanks - so far I like the Vardar fans. I had previously Scythe Kamaflow 2's at 1400rpm, which are also good fans.

I can only fit a 120mm in that case, which is similar to the Silverstone RV01. I wish I could do a 280 or 360 liquid cooling setup, but temps are actually very good on the 8700k after the newest Asus 0802 bios that came out a few days ago for the Hero X. Gaming in the 40's and 50's, stress test in the 60's and 70's, better than the 80's of the previous bios.

 

[dbrons]

yeah the 280mm cooler is really something. Haven't run any stress tests but my temps are very cool. I just repaired an archive in Quickpar tonight which is the operation that always overheats my cpu. The fans were running at 975 rpm, I can't hear them and my cpu never went over 40.

Haven't updated the BIOS yet but I will.

 

[StinkyPinky]

I have an h115 Corsair that I put a couple Vardar fans on and it's working great so far though I havent pushed it.
I'll try the MCE tomorrow, thanks.

I had tried one of the EZ overclocks and it says overclocked 29%, so around 4.0 Anyway, I tried another video archive on my Sandy Bridge, then copied it over to my Coffee Lake and tried it there.
On my old Sandy bridge the file opened in 18 sec, and extracted with Winrar in 5 1/2 minutes.
On the new Coffee Lake the file opened in 9 sec and extracted in 2 min, 40 sec.

So just a bit over twice as fast on my new rig with faster cpu and two more cores. a huge improvement. I'm really happy with this new computer!

Always nice to hear about "real world" use of a pc. Just goes to show that a sandy bridge really is starting to show its age.

 

[StinkyPinky]

Yes.That's how I've always done it. I always set my vcore voltage manually to have a static voltage to work the offset against. I then proceed to lower the voltage (negative offset, always negative offset for me) until I run into instability then up the offset a couple of notches to be stable. I use Intel XTU for this purpose.

I don't think this is correct. If you set a static voltage, it will be a static number. It won't move much at all and won't drop at idle. Not a big deal as long as you don't have it baking, but it may mean slightly higher idle temps.