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Haswell Overclocking Guide [With Statistics] - Page 135

post #1341 of 19540
Thread Starter 
Quote:
Originally Posted by MojoW View Post


Dude i think we got similar sillicon on ours cuz i'm in the same boat as you 4.6 won't be stabelized no matter what.
It's not like i'm fighting temps or anything i went up to 1.45 (as well as trying to up/lower all other individual volts)
The whole week i've been trying 4.6 but i need a brake.
so i'm gonna enjoy my 4.5 @ 1.276v max for now because i know this is stable, after 12 hours of XTU and 24 hours of Prime95 max temp 71c.
Edit: And some gaming sessions of a couple of hours

I thought I had it going at 1.385v now I push to 1.425v... Vrin to 1.9 or 2.0... Io voltage, Sa voltage, ram voltage all upped.

I THINK I got more stable with all those tweaks but it's not perfect. I assume you never got 9c?

Quote:
Originally Posted by qazzaq2004 View Post

Should I be concerned about the 15C temp difference? Does it require a reseat of my cpu cooler?

Any tips on voltages for increasing my Ring Bus? I have it for auto @ 3900 Mhz currently.

I know I want to be aiming for a 1:1 ratio, so what voltage should I use for a 4500 Mhz ring bus overclock?

I've seen a guide where it says to use the same vcore and then steadily drop the voltage if stable. But 1.32 CPU Cache voltage sounds a bit high to me.

15C IMO might be worth it. Might.

For ring bus, just make sure you try not to exceed 1.3 or 1.35v. Once you pass 1.35v you're pretty much in uncharted territory. I have mine at 1.27v for 4.1ghz uncore. I don't push it higher because the performance benefit is very small, reference to my chart. 

 

"From my personal benchmarks, I found the drop of 0.7ghz for the ring bus to be an equal performance hit of 0.05ghz decrease in core clock and this difference shows in a very CPU reliant benchmark like chess."

 

 

1:1 ratio is ideal and in a perfect world we'd all be running 1:1 but for practical purposes it's basically a useless concept because you won't get that high. You won't get a magical boost in performance from going 1:0.95 to 1:1, the boost in performance would be identical if you had 1:0.9 and you went to 1:0.95. My advice is the forget about 1:1 and just acheive the best uncore overclock you think you can wring out without exceeding 1.3-1.35v uncore voltage. 1.3 if you prefer to veer on side of caution, 1.35 if you're a daredevil.

 

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post #1342 of 19540
No i never had 9c lockups or freezes i just had 101's and 124's.
So i'm not quite sure why that is.
There is just so much difference but i gotta say that does make it fun overclocking.
post #1343 of 19540
Thread Starter 
Quote:
Originally Posted by MojoW View Post

No i never had 9c lockups or freezes i just had 101's and 124's.
So i'm not quite sure why that is.
There is just so much difference but i gotta say that does make it fun overclocking.

I just want performance right now, lol. 

You tried Vrin?

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Undelwalt (2017)
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Celapaleis (2013)
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Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro 512gb (Undelwalt) WD Red 2tb (Pack Yak II) Seagate Expansion Drive 5tb (Phoenix Down II) 3x560mm HardwareLabs Nemesis GTX 
CoolingCoolingCoolingCooling
XPSC Raystorm Pro Watercool Heatkiller 1080ti Full Cover Waterblock EK XTOP Revo Dual D5 (Serial, PWM, v4) EK ZMT (1/2 - 3/4 ID OD) 
CoolingCoolingCoolingCooling
14xEK ACF (Compression Fittings) EK x4 250 (v2) Distilled Water + PT Nuke (Copper Sulphate) 24x140mm Silent Wings 3 
OSMonitorKeyboardPower
Windows 10 Pro 64bit Catleap 27 Inch 2560x1440 IPS 60hz Display Coolermaster Storm Trigger (Brown Switches) EVGA P2 1000w 
CaseMouseMouse PadAudio
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Sennheiser HD 800 2xKrk Rokit 6 G2 Blue Yeti (Grey) Rode PSA-1 Arm 
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CPUMotherboardGraphicsRAM
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post #1344 of 19540
Quote:
Originally Posted by Darkwizzie View Post

I just want performance right now, lol. 
You tried Vrin?
From vrin to SA, but i must be missing something else as i am not used to using msi boards(First one)
As overclocking for my friend's rig was easy on his hero, but he must have a exceptional haswell.
It was setting the clock to 4.6 and voltage was applied by the board.
After that i just lowered his vcore till 1.19v from 1.22v aswell as others, because his temps we're 89c hottest core and now that core is 83c max.(H100i)
His cache is on 4.2 cache volts on auto and memory xmp profile 2000.
So no overclocking problems there compared to my system.

Edit: BTW his stability testing was done 24 hours of prime95 and a 12 hour run of Crysis 3 by himself thumb.gif
post #1345 of 19540
1.275 is pretty good for 4.5/4.6Ghz. I am at 1.350 for 4.5Ghz stability in gaming and 1.320 for synthetic testing.
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post #1346 of 19540
if I got this error:

Hardware failed error. on Prime95

what does this mean?
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post #1347 of 19540
Admittedly I'm fairly new to overclocking so please excuse my ignorance.

I'm overclocking or attempting to overclock a i7 4770k on an asus z87-k mobo. I'm using a hyper 212 evo air cooling solution.

Ive been trying to overclock with various setting and i'm getting pretty horrible results. The highest i've gotten is 4.1mhz semi stable and 4 mhz extremely stable ( prime 95 for 24 hrs without a blip)


I've set my uncore at 35 and have had my voltage at various levels from 1.25 to 1.2.. I started with my multiplier at 45 and moved it down to 4 for stability.

at 45 I would see the windows logo and blue screen
at 44 same as above
at 43 same as above
at 42 able to get in but immediate crash upone prime 95
at 41 almost immediate crash upon prime 95
at 40 stable at prime 95 for hours upon hours

I have experience installing aftermarket coolers so I highly doubt I used too much thermal paste but my speedfan says the temperature of my core go up almost immediately to 70 celcius as soon as I turn on prime 95. After I stop prime95 it drops down to around 30 degrees celcius within a few seconds as well. No gradual temperature changes.

I'm somewhat worried about pushing my voltage to anything higher than 1.25 with only a hyper 212 evo but perhaps a moderate bump would be ok.

I haven't updated my bios from the disk that the mobo came with. Is this a possible reason why my results are so horrid?

Im psyched to be joining this exciting community and any help from you season veterans would be much appreciated to get me off in the right direction.

Thanks in advance.
post #1348 of 19540
Also on the asus uefi that have a vrm setting that you can adjust to different seetings from 1-5. 5 being extreme. I've tried this with both 3( high ) and 5 (extreme) settings.
post #1349 of 19540
Try upping the CPU IN Voltage to 2.0V.

What voltage do you need to be stable at 4.2 Ghz and what are your temperatures?

The only settings I fiddled with were

CPU voltage
Vcore from adaptive to Manual (just for stress testing)
CPU In Voltage
Setting DRAM to 1333 just for finding peak CPU Core speed

Also try using Intel XTU as your stress test and see what happens for you.
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post #1350 of 19540
Is there a difference between vcore and cpu voltage? lol

Also set my memory to auto isntead of xmp
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