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Haswell Overclocking Guide [With Statistics] - Page 512

post #5111 of 19540
Quote:
Originally Posted by Forceman View Post

I couldn't find a time when the multimeter matched HWInfo or CPU-Z exactly, since I couldn't see HWInfo while I was holding the probes on the motherboard, but here's a HWInfo shot that shows the mins, and two pictures of the multimeter. One shows negative because I had the probes reversed.

Thanks so much for your help! After forcing C6/C7 on, I do get those ridiculous idle voltages. I think the boards left it at auto ( disabled by default to prevent PSU incompatibility ) but forcing it on seems to yield no crashes, or BSODs and such. I'm going to put the computer to sleep and resume ( I don't typically shutdown and restart since it takes longer, so this is more important ) and see if it causes issues.




Sleep and resume is also a go. This is good stuff.
Edited by Shanenanigans - 11/7/13 at 6:02am
post #5112 of 19540
What is the recommended voltage for SA, IOD ,IOA with GSkillz 2400 2x4gb?
post #5113 of 19540
Automatic or as low as it works when your CPU is at max overclock and you put your RAM back up
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post #5114 of 19540
You probably won't have any issue with them leaving SA/IOA/IOD on auto and XMP 1 or 2.

Whilst you're at it, go to 'rig builder', fill in the blanks and link it to your sig.thumb.gif
post #5115 of 19540
Quote:
Originally Posted by Darkwizzie View Post

About the phantom Bsod:

Have never heard of it. o.o
Regarding to 1:1... Most likely is because the gain in performance is so small, your benchmark can't pick it up and the margin of error is way larger than the performance gain.
You say heat is lowering your scores. What type of heat are we talking here? 60c? 80c? 90c?
Results charted.
Grats on OC. Updated.

Oh, and if your CPU scales like mine, no way you're going to get x46 stable like that (which you probably already know). x46 will require some serious acrobatics. I managed to get some sort of stability now with 2.15Vring and 1.42 vCore and 1.28 vRing.
How are you throttling at 1.25v? I was doing XTU, OCCT, Prime at 1.35v no problemo on air. Yes you probably need more Vcore but I don't see why you need to bust out the big guns already unless you've got Evo or stock cooler.


I didn't say it was heat for sure, just my suspicion. At 1.265 volt at 4.5 ghz, xtu, x264 was hitting mid 80 spiking to low 91 or 92c. At 1.28 and higher those test were staying at low 90c and would spike as high as 98c. When I got lower score running benchmark changing nothing but the voltage, my conclusion was the heat from the higher voltage was probably affecting the score somehow but I really have no proof that it is what was doing it. I just notice that at that voltage and heat when I do testing my computer does exhibit performance issue. Pages take longer to open and everything was just generally slower vs 1.265 when the computer was still able to run pretty normally. Prime would hit 100c right away, and even at stock setting prime was giving me upper 70c. I really think my h100 is piss poor. idle it is around 32-33c since it is cooler but we all know idle temp doesn't mean anything.

Regarding my comment about uncore volt being lower than core volt. I was always under the impression that uncore should be running lower. again in my own testing, when I had uncore at or above my core voltage, computer will not post or bsod after windows load. Also I was lead to believe uncore is more sensitive to voltage and going beyond 1.3 for extend period will damage the chip. I do not remember anyone in this thread running uncore voltage higher than core voltage. My thinking is, let say you need 1.4 volt for core, will you run 1.4 volt for uncore as well??? That just doesn't seem safe. But if anyone has any other thought let me know and I might just be wrong and worry for nothing.
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post #5116 of 19540
Okay. So I decided I'd try something interesting. I had 1.86 VRIN, 1.18x VRING, and 1.132 VID ( 1.152vcore ) for my 4.2Ghz OC with a 3.9Ghz Uncore.

I thought after forcing C6/C7 on, that I would change my voltages about a bit. Also, I've had 2 124 BSODs in the past 2 days. Which bothered me cuz it didn't happen for at LEAST a week.

Here's what I have right now

CPU Multi - 42x
Uncore - 34x ( goes up to 40x; stupid Gigabyte board )
Turbo enabled across all cores at 42x
VRIN - 1.8v
VID - 1.141v ( 1.162 vCore )
VRING - 1.15v

And it's stable, and fetching me the same temps in my regular load ( ie CSGO ). Prime and such is still 90+C but it's quite fine actually. For right now, I don't mind the temps, since it's winter and my window's always open, and the retailer just shipped out my new cooler today frown.gif so it'll take a while to get here, sadly.

Either way, if I'm able to do ~1.25v, on this chip, hopefully I should get about 4.4-4.6 on it easy. Let's see. And hope for the best.
post #5117 of 19540
And I'm still trying to get to 4.3GHz, I'm already on 1.28v for core.

testing "as we speak" with OCCT (normal test) temps are still under control (80ºC)
post #5118 of 19540
Thread Starter 
Quote:
Originally Posted by kinzx View Post


I didn't say it was heat for sure, just my suspicion. At 1.265 volt at 4.5 ghz, xtu, x264 was hitting mid 80 spiking to low 91 or 92c. At 1.28 and higher those test were staying at low 90c and would spike as high as 98c. When I got lower score running benchmark changing nothing but the voltage, my conclusion was the heat from the higher voltage was probably affecting the score somehow but I really have no proof that it is what was doing it. I just notice that at that voltage and heat when I do testing my computer does exhibit performance issue. Pages take longer to open and everything was just generally slower vs 1.265 when the computer was still able to run pretty normally. Prime would hit 100c right away, and even at stock setting prime was giving me upper 70c. I really think my h100 is piss poor. idle it is around 32-33c since it is cooler but we all know idle temp doesn't mean anything.

Regarding my comment about uncore volt being lower than core volt. I was always under the impression that uncore should be running lower. again in my own testing, when I had uncore at or above my core voltage, computer will not post or bsod after windows load. Also I was lead to believe uncore is more sensitive to voltage and going beyond 1.3 for extend period will damage the chip. I do not remember anyone in this thread running uncore voltage higher than core voltage. My thinking is, let say you need 1.4 volt for core, will you run 1.4 volt for uncore as well??? That just doesn't seem safe. But if anyone has any other thought let me know and I might just be wrong and worry for nothing.

Your analysis all seems to be fine.

But jeeze, your H100 feels like it's made by... bacon strips or something. Those temps seem suspect. You're using 27.9?

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post #5119 of 19540
Quote:
Originally Posted by Darkwizzie View Post

Your analysis all seems to be fine.
But jeeze, your H100 feels like it's made by... bacon strips or something. Those temps seem suspect. You're using 27.9?

My x264 doesn't hit 70 with hyperthreading off at a touch higher vcore than him. Average ~64c hottest core when it's this cold
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post #5120 of 19540
Is 1,8v stock Intel vccin?
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