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Skylake Overclocking Guide [With Statistics] - Page 849

post #8481 of 11368
Quote:
Originally Posted by Mr.N00bLaR View Post

Yeah, I searched a bit and do see that. Im going to see if i can get 4.8GHz stable with Realbemch. Hopefully the clock speed doesnt throttle. Has anyone else gotten higher clocks on a GA-Z170XP-SLi-CF board? Or know how to check VRM temps on the board?

Gigabyte Z170-D3H here. VRM setup should be similar/same as yours.

I managed ~4.88 w/ cache 4.37 at ~1.445v but that involves weird (and possibly dangerous) tweaks which seem to magically make my setup a tad more stable at same voltage (BCLK ~101.7 and undervolting elsewhere).
i5-6600K itself is roughly Sl binned 4.8GHz standard.

Never experienced throttling below CPU temperature limit up to ambient 30C from my checking (even without undervolting).

EDIT: lowered to 4.78 now due to 34C ambient and crappy Hyper 212X. 4.88 lasted 2 months so far since it's new build
Edited by Cornerer - 8/14/16 at 9:53am
post #8482 of 11368
Quote:
Originally Posted by Cornerer View Post

Gigabyte Z170-D3H here. VRM setup should be similar/same as yours.

I managed ~4.88 w/ cache 4.37 at ~1.445v but that involves weird (and possibly dangerous) tweaks which seem to magically make my setup a tad more stable at same voltage (BCLK ~101.7 and undervolting elsewhere).
i5-6600K itself is roughly Sl binned 4.8GHz standard.

Never experienced throttling below CPU temperature limit up to ambient 30C from my checking (even without undervolting).

EDIT: lowered to 4.78 now due to 34C ambient and crappy Hyper 212X. 4.88 lasted 2 months so far since it's new build
My guess is u haven't ran prime95 then. Seams to be the only thing I get throttling in. Even ran 2 hours of ibt on maximum and no throttling. N vrm hs is HOT. I'm going to throw an 80mm fan over my vrm hs in next couple days and I'm sure it will fix the issue. Have been looking into a better board cuz I have time to return mine still. Only boards readily available with higher cpu vrm counts then 8 phase are gigabyte gaming gt and gaming g1, z170-deluxe from asus, and msi xpower gaming titanium which aparently has 10+4+2+1 phase whatever the hell that means. My guess 10 cpu and 4 ram and the 2+1 are something to do with the fact it has 4 full pcie x16 slots.
Edited by HOODedDutchman - 8/14/16 at 1:29pm
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post #8483 of 11368
Probably ^. I get about 7-8 minutes into P95 28.9 before I experience throttling. I tried positioning an 80mm Noctua fan blowing on the VRM sinks but its just not that effective. The 80mm Noctua fans are great quality but do not move enough air for my particular situation. I'm guessing I would need at least 70-80cfm to get some decent airflow into that section on my motherboard. I like my D15 but there is no question in my mind that is is just too large. I might switch it out for a CLC at some point (BF maybe) to reclaim space in my case.

Back on topic, I changed my voltage to 1.46v for 4.9GHz and am running ROG Realbench now. Peak temps around 71C and no throttling so far. I will run the 8 hour test then I guess move onto some other stability tests to verify. I'm happy I got my CPU delidded.
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post #8484 of 11368
Quote:
Originally Posted by Mr.N00bLaR View Post

Ok... I'm back. This time with better cooling and my goal is either 4.9GHz or 5.0GHz


At 4.9GHz I'm seeing the clock speed throttle down to 800MHz while stress testing. I'm priming with p95 v28.9 on my 6600k now.

i5-6600K, Gigabyte Z170XP-SLi-CF, Corsair TX950 PSU


Info:
Load temp: 81C (hottest core, others within 3C)
Clock speed - 4.9GHz (100x49)
BIOS vcore - 1.45v
Windows hwinfo64 load vcore - 1.44v
LLC: - High
PCH Core - 1.06v
No settings enabled in VR section of BIOS
FCLK - stock / 800MHz
Cache - 3600MHz
VCCIO - 1.25v
VCCSA - 1.25v
Package power limit 1,2 - 300W
Package power limit time - Auto
Platform Power limit 1,2 - 300W
Platform Power limit time - Auto
Power limit 3 - 300W
Power limit 3 time - Auto
C1E - Disabled
C3 - Disabled
C6/C7 - Disabled
C8 - Disabled
Package C State limit - Auto
CPU thermal Monitor - Auto
CPU EIST Function - Disabled


This so far seems to be happening in the FMA3 FFT small tests. I thought these testes were producing a lot of heat but they don't seem to be... I see the cores around ~72 when the voltage is at 1.44 and clock is at 4.9 then both the voltage and clock go down significantly within 5-10 seconds.

I assumed that this was some kind of power throttling which is why I change the power limits from Auto to 300W each. I'm not sure if the time setting needs to be changed too, or if the power limit setting actually did anything. None of the workers have stopped - they are all still going.

EDIT: Canceled my P95 test after a successful hour and ran Realbench, I didn't make it very far until it crashed. Seems like I need more voltage but it also seems like my VRMs possibly are causing throttling.. Maybe this board is only good for 4.6ish?
I've got the G1.Sniper Z170, which seems to be identical to the Z170XP-SLI, just with a different color scheme. I typically run @ 4.6GHz, 1.31Vcore (BIOS, slightly lower actual) with the Phanteks PH-TC14PE. I tried running 4.7GHz, 1.4Vcore recently, & hit 86C on the hottest core during P95 SFFT. None of the temperatures reported in HWInfo were higher than 86C, but I was getting cyclical throttling & PROCHOT yes notifications in HWInfo. I'm assuming the issue was VRM overheating, but I haven't been able to find enough information to verify it yet. My P95 session continued without any workers stopping as well. I may try a spot fan on the VRM heatsinks to see what it does. I think the board is the limiting factor for both of us though.
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post #8485 of 11368
Quote:
Originally Posted by Mr.N00bLaR View Post

Probably ^. I get about 7-8 minutes into P95 28.9 before I experience throttling. I tried positioning an 80mm Noctua fan blowing on the VRM sinks but its just not that effective. The 80mm Noctua fans are great quality but do not move enough air for my particular situation. I'm guessing I would need at least 70-80cfm to get some decent airflow into that section on my motherboard. I like my D15 but there is no question in my mind that is is just too large. I might switch it out for a CLC at some point (BF maybe) to reclaim space in my case.

Back on topic, I changed my voltage to 1.46v for 4.9GHz and am running ROG Realbench now. Peak temps around 71C and no throttling so far. I will run the 8 hour test then I guess move onto some other stability tests to verify. I'm happy I got my CPU delidded.
I run the custom x264 stress test from this thread and only hit 72 on hottest core and in Intel burntest hit 82 on hottest core and don't throttle at all after 2.5 hours on maximum (20 runs). I disable all power saving features and use hwmonitor which shows minimum clock speed so I don't have to sit there n watch to see if it throttles. Not sure what the deal is with prime95 but I'm done with it for now. I'll go with 20 runs ibt on maximum and 7-8 hours the x264 and call it stable and if I have any issues in regular usage I'll deal with it then. If I just use the x264 I could get 4.6 and still be under 80 with no throttling but this way I'll probably never break 60 while gaming. Already planning on new case and aio water cooler with 80mm fan on vrm. I used to have a 3930k with a asus board that throttles in Intel burntest but not in prime95 but these were the days before avx was in prime95. I solved it by using about 3" long bolts mounted to the case just above the motherboard so the fan was attached to top of bolts pointing down. It solved the issue for about 15 runs then it would still do it. Prior to the fan it did it in about 3 runs and that was in a gain nzxt case with about 8 or 9 fans. The x79 board were notorious for it tho due to the vrm all being crammed at the top between the ram slots. Never expected it from skylake. I've never had an issue with even the cheapest z68, z77 boards. My last board was a p8z77-v lk that never throttled at all. Of course I was only running about 1.27v but it had a nothing tiny heatsink on vrm and should of used more power on a 3770k then skylake 6700k...
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post #8486 of 11368
Quote:
Originally Posted by dlewbell View Post

I've got the G1.Sniper Z170, which seems to be identical to the Z170XP-SLI, just with a different color scheme. I typically run @ 4.6GHz, 1.31Vcore (BIOS, slightly lower actual) with the Phanteks PH-TC14PE. I tried running 4.7GHz, 1.4Vcore recently, & hit 86C on the hottest core during P95 SFFT. None of the temperatures reported in HWInfo were higher than 86C, but I was getting cyclical throttling & PROCHOT yes notifications in HWInfo. I'm assuming the issue was VRM overheating, but I haven't been able to find enough information to verify it yet. My P95 session continued without any workers stopping as well. I may try a spot fan on the VRM heatsinks to see what it does. I think the board is the limiting factor for both of us though.
It's not really a limiting factor. Well other then the fact you can't use prime95. I'm fine in Intel burntest and x264. The only way to really tell if it's vrm is to put a fan on the heatsink and see if it resolves it or makes the throttling take longer to kick in.
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post #8487 of 11368
Username: HOODedDutchman
CPU Model: i7 6700K
Base Clock: 4.5ghz
Core Multiplier: 45x
Core Frequency: 4.5ghz
Cache Frequency: 4.1ghz
Vcore in UEFI: 1.33V
Vcore: 1.336V
FCLK: 100
Cooling Solution: Arctic Cooling Freezer 13
Stability Test: Custom x264 16 Threads over 7 hours, IBT 20 runs on maximum setting

Batch Number: L606F306
Ram Speed: 2666mhz 16-18-18-35
Ram Voltage: 1.2v
LLC Setting: AUTO or Mode 1 give same result so left AUTO.


Edited by HOODedDutchman - 8/15/16 at 5:12pm
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post #8488 of 11368
Quote:
Originally Posted by HOODedDutchman View Post

My guess is u haven't ran prime95 then. Seams to be the only thing I get throttling in. Even ran 2 hours of ibt on maximum and no throttling. N vrm hs is HOT. I'm going to throw an 80mm fan over my vrm hs in next couple days and I'm sure it will fix the issue. Have been looking into a better board cuz I have time to return mine still. Only boards readily available with higher cpu vrm counts then 8 phase are gigabyte gaming gt and gaming g1, z170-deluxe from asus, and msi xpower gaming titanium which apparently has 10+4+2+1 phase whatever the hell that means. My guess 10 cpu and 4 ram and the 2+1 are something to do with the fact it has 4 full pcie x16 slots.

As I've mentioned I used prime95 b4 and no throttling aside from CPU itself. My case is highly ventilated and has aggressive fans though I admit. 6600K is also easily 10C cooler than 6700K under same conditions at least, not sure if that might relate to relatively cooler VRMs.
Nevertheless I personally don't see the point of using P95 as I not stressing my PC anywhere close to that. My usual temps are like 30C lower even when video-editing or playing most CPU-intensive titles and even passing P95 can give me BSODs in those.
post #8489 of 11368
Quote:
Originally Posted by Cornerer View Post

As I've mentioned I used prime95 b4 and no throttling aside from CPU itself. My case is highly ventilated and has aggressive fans though I admit. 6600K is also easily 10C cooler than 6700K under same conditions at least, not sure if that might relate to relatively cooler VRMs.
Nevertheless I personally don't see the point of using P95 as I not stressing my PC anywhere close to that. My usual temps are like 30C lower even when video-editing or playing most CPU-intensive titles and even passing P95 can give me BSODs in those.
What do you mean aside from cpu itself ? That's what we mean cpu throttling due to vrm overheating. N 6600k uses less power then 6700k cuz no hyperthreading so may not effect the 6600k.
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post #8490 of 11368
Quote:
Originally Posted by HOODedDutchman View Post

What do you mean aside from cpu itself ? That's what we mean cpu throttling due to vrm overheating. N 6600k uses less power then 6700k cuz no hyperthreading so may not effect the 6600k.

I was just referring to the 100C throttling mark of Skylake CPUs which I only hit once during my "reference" testing, but even back then I don't seem to notice any other types of throttling at 9XC or lower.
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