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Haswell Overclocking Guide [With Statistics] - Page 508

post #5071 of 19539
Quote:
Originally Posted by error-id10t View Post

I've said it before and I still say it.. that's a myth. Haswell does not go that low, not even Intel's own XTU shows that - it shows exactly what all other tools show (as long as you're not using a very outdated version of CPU-Z).

So you are saying my multimeter is wrong?
post #5072 of 19539
Quote:
Originally Posted by Forceman View Post

So you are saying my multimeter is wrong?

How about you stop this before it becomes another argument, and take a picture of the multimeter reading. thumbsupsmiley.png
post #5073 of 19539
Quote:
Originally Posted by blaze2210 View Post

How about you stop this before it becomes another argument, and take a picture of the multimeter reading. thumbsupsmiley.png

Soon as I figure out how to hold two multimeter probes and a camera at the same time I'll get right on that. But I'm not the only person to have verified the voltages with a multimeter - others here have done the same.
post #5074 of 19539
Hi all, been awhile , just had 2 kids so not much time but I been checking in and read every page in this thread ( 2 kids = lots of time staring at screen feeding lolzx.). Anyway I just wanted to add an update to my result. I submitted one awhile back with pictures and been working to tweak the uncore and memory.

Dark I think you have my cpu listed as 4670k but it is 4770k and I also think your chip scale pretty similar to mind up to 4.6 ghz.

Anyway, my results after almost 2 months.

Username:kinzx
CPU Model:4770k
Core Multiplier:45
CPU VID: 1.263-1.267
Vcore: 1.265
Input Voltage:1.85
Uncore Multiplier:42
Uncore Voltage:1.16
Cooling Solution:H100
Stability Test: 10 run xtu benchmark, 12 hours xtu, 10 run x264 64 bits run, Folding 10 hours.
Batch Number: L307B239 Malay
Ram Speed: Team Xtreem Dark 1866 XMP 9,11,9,27

I was also able to get it stable at 4.6 ghz, 1.36 vcore with all other setting the same. Heat was horrible as I was getting into mid 90s in xtu and x264 but never crash just freeze. Gaming, rendering and doing what I generally do I have no problem at all. I had it on 4.6 ghz for 2 weeks with no issue but scale it back to 4.5 ghz due to my fear of damaging my chip with 1.36 volt going through it and watching temp spike to low to mid 90 when under load. I figure I can probably raise vcore to run these stress test but my cooling is not up to par to add more voltage.

Now to some questions and observation. I think it is pretty normal for the vcore voltage to either go up or down .02 but anyone know of a way how I can maybe stabilize it more on an MSI mpower board, regular mpower not mpower max if that makes any difference. I know on asus you got llc control and I remember on my z77 gigabyte there were some setting that does it but I don't seem to find anything similar on MSI. Should I even care too much about it anyway?

My computer also does something very weird , everytime I overclock it, after a few days it will just shut down and reboot with failed overclock error after a cold boot. I saw 2 others member with this issue and one say disconnecting the power cable from the psu solved it, so I did and it haven't happened again. I get no blue screen, in bluescreenviewer there is no error code or message and in event viewer it also does not show any error beside all zero values for the report. Anyone else having issue or is this isolated to a few board? I know the oc is stable because I use it to render for hours, fold and watch tons of Netflix and XBMC and if I don't turn it off, it doesn't happen. So very unlikely it is a "failed overclock."

About my 4.6 oc. I know it is probably safe but would anyone really run 1.36 volt 24/7 even though in everyday use I saw absolutely no difference. However, it does wonder for my benchmark, over 10 point in cinebench 11.5 , 16000 in geekbench 3 and around 1150 on xtu. Since my issue is heat, this h100 I got I always gotten below average cooling from it, can anyone confirm if I will see any improvement going custom watercool? If so any idea around how much improvement in temp I can expect? That is if anyone switch out an AIO for custom and have experience in this. Delid is out of the question, I can do it but then wife will give me hell for taking apart a 300$ chip and losing my warranty.

I been playing with uncore and voltage a lot trying to test 4.5 ghz and getting a 1:1 ratio. I already know that 1:1 is not important and in my own test I found that 42x uncore was the best for my chip. 42 uncore gave the best number where 1:1 on 45 ghz drop my score in cinebench 11.5 by about 1.5 point, went from 9.85 to like around 8.25. It drop my geekbench3 score from 15000 to around 13500. So having 1:1 might not be advisable performance wise. For 1:1 at 4.5 ghz my uncore voltage needed 1.255 which I was not comfortable with. At 42 uncore I needed 1.16. 43 uncore and higher I needed more uncore voltage and saw that it did add heat just a little while doing nothing to performance.

However and this is what I find peculiar is that the higher my oc, the higher I needed some more voltage for the uncore even at stock 35 speed. I can leave everything at auto and just change the ratio to 43 and boot everything up normal and run stable as a rock. I was ok with auto and/or setting uncore to 1.15 until I hit 4.5 multi. My chip from stock to 43x mulit 1.2 volt while 35 uncore i can leave at auto or set 1.15. At 45 muilti I needed 1.26 but needed 1.265 to run xtu over 8 hours ( it crash literally 5 minutes pass 8 hours at 1.26) , x264 and folding. Even at 35 uncore I needed to up the uncore voltage to 1.16 to get 4.5 and 1.18 to get 4.6, 1.19 and 1.195 crash my computer at 4.6 but 1.8 and 2.0 was ok for 4.6, weird. I don't know exactly if it is due to how much more my chip needed vcore because going to 4.5 I needed 1.265 volt and 4.6 I needed 1.36 volt to be stable.


It seem with my chip at least, finding the right voltage is very critical not only for stability but also performance. I put 1.27to 1.29 through it and got lower number in xtu,cinebench and geekbench. I think it might be due to heat, it was getting much hotter and I just have this hunch that the heat was lowering my benchmark scores.

As for memory, going from 1333 to 1866 I got WHEA error and upping the input volt from 1.8 to 1.85 solved it. I got my memory to boot as high as 2400 but the timing was just too loose. It was 13,15,13,35 at 2400 if I remember correctly. Are those timing normal since I am pushing it from xmp 1866 to 2400? I was getting score that were a bit better than 1866, 2133 was the highest where 2400 was lower than even 1866 but I am guessing this is because of the loose timing. Anyone have any pointer to it. I will be looking at the memory oc thread but figure maybe someone has a quick pointer.

P.S. My test only apply to my chip, your chip can be different.
Edited by kinzx - 11/6/13 at 12:52pm
ThermalTron
(16 items)
 
  
CPUMotherboardGraphicsRAM
4790k MSI Z87 Mpower MSI 7870 Team Xtreem Dark 
Hard DriveHard DriveCoolingOS
Western digital Samsung 840 pro H100 Windows 8 64bit enterprise 
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Apple HCD Dell LG Corsair K90 
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Western digital Samsung 840 pro H100 Windows 8 64bit enterprise 
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post #5075 of 19539
Prime95 crashed after 7 hours on Blend with these settings:

CPU Multiplier - 45
CPU Cache Min/Max - 34/34
DRam Frequency - 1600mhz 9-9-9-24
Vcore Voltage - 1.25v
Vcore Input Voltage - 1.85v
DRam Voltage - 1.5v

Probably going to invest in some watercooling to keep it extra cool and not be afraid to up the voltage. Dual radiators, here I come! biggrin.gif
So right now this cpu clock is 17 hours aida64, 20 runs of x264, and 6 hours of prime95 stable. I suppose that's okay for now? Let me know what you guys think.
post #5076 of 19539
I was very unlucky with my chip, I can't even reach 4.3GHz!

core multi: 43X
cpu cache: 39X
manual cpu core voltage: 1.22v
manual cache voltage: 1.25v
VCCSA: +0.25
mems at JEDEC 1333MHz 1.5v
cpu input voltage: 1.85v

temps around 92º, BSOD after a few minutes of aida64 FPU

I can't increase voltage because of the temps (it will start throttling)

What else can I do?
post #5077 of 19539
From what I understand, try lowering you cache voltage and clocks to default and you may get better results. We'll see what the others say.
post #5078 of 19539
I'm back and i used my PC Like i normally do !!!! xD
Got 2 bsods in 3 days ....jayy..
I think i overrated my chip...now stable @ 1,25v 4,5Ghz will test prime and x264 stability at the weekend...and i just Tuner my cooling a bit biggrin.gif now Idle temp 27C and maximum gaming 55C
post #5079 of 19539
Quote:
Originally Posted by Warl0rdPT View Post

I was very unlucky with my chip, I can't even reach 4.3GHz!

core multi: 43X
cpu cache: 39X
manual cpu core voltage: 1.22v
manual cache voltage: 1.25v
VCCSA: +0.25
mems at JEDEC 1333MHz 1.5v
cpu input voltage: 1.85v

temps around 92º, BSOD after a few minutes of aida64 FPU

I can't increase voltage because of the temps (it will start throttling)

What else can I do?

Your cache voltage shouldn't be higher than your core voltage. Do as the guide say and drop cache ratio to 35 from 39 and drop your cache voltage back to between 1.12 and 1.15, I found better stability at 1.15 at lower oc.
ThermalTron
(16 items)
 
  
CPUMotherboardGraphicsRAM
4790k MSI Z87 Mpower MSI 7870 Team Xtreem Dark 
Hard DriveHard DriveCoolingOS
Western digital Samsung 840 pro H100 Windows 8 64bit enterprise 
MonitorMonitorMonitorKeyboard
Apple HCD Dell LG Corsair K90 
PowerCaseMouseMouse Pad
Kingwin 850 Platinum Thermaltake Chaser MK1 TT Theron Roccat Sense Glacier Blue 
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ThermalTron
(16 items)
 
  
CPUMotherboardGraphicsRAM
4790k MSI Z87 Mpower MSI 7870 Team Xtreem Dark 
Hard DriveHard DriveCoolingOS
Western digital Samsung 840 pro H100 Windows 8 64bit enterprise 
MonitorMonitorMonitorKeyboard
Apple HCD Dell LG Corsair K90 
PowerCaseMouseMouse Pad
Kingwin 850 Platinum Thermaltake Chaser MK1 TT Theron Roccat Sense Glacier Blue 
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post #5080 of 19539
Quote:
Originally Posted by Forceman View Post

Soon as I figure out how to hold two multimeter probes and a camera at the same time I'll get right on that. But I'm not the only person to have verified the voltages with a multimeter - others here have done the same.

Forceman, didn't you know you're magic?
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