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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 325

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post #3241 of 9460
Quote:
Originally Posted by Jpmboy View Post

A windows-based program recorded over 1.6V? Are you using a low temp chiller or LN2?

Verified by HW monitor and CPU-Z to be >1.6. Asrock's utility gave just under 1.6, but its not really accurate (and I didn't check the Asrock utility after I put it on load; I just killed Prime asap). The fact that the temps hit >80C in seconds is consistent with a Vcore much higher than 1.525 (what I was using before).

I honestly wouldn't mind running an extended prime on 1.6 (not 1.6x or whatever I was at before) if my ambient temps are 10C or lower, on air. Too bad my room temps are about 15C higher than that. There is decent evidence that SBs can take a crapton of voltage, and the fact is, people run phase and stuff at 1.5-1.6V 24/7 without problems. Controlled temps and you *may* fine. Its debatable whether the combination of both high vcore and high (but not 100C high) temps can kill a CPU. All I can say is that high vcore alone isn't really that dangerous... as long as your motherboard and PSU are up to par.
Edited by Kanashimu - 2/11/13 at 5:02am
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post #3242 of 9460
Quote:
Originally Posted by Jpmboy View Post

Wouldn't want that chip now. tongue.gif

Smile and wait for the flash.

Oops - wrong poster:rolleyes:

Was referring to the 1.6V guy.
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post #3243 of 9460
Quote:
Originally Posted by Kanashimu View Post

Verified by HW monitor and CPU-Z to be >1.6. Asrock's utility gave just under 1.6, but its not really accurate (and I didn't check the Asrock utility after I put it on load; I just killed Prime asap). The fact that the temps hit >80C in seconds is consistent with a Vcore much higher than 1.525 (what I was using before).

I honestly wouldn't mind running an extended prime on 1.6 (not 1.6x or whatever I was at before) if my ambient temps are 10C or lower, on air. Too bad my room temps are about 15C higher than that. There is decent evidence that SBs can take a crapton of voltage, and the fact is, people run phase and stuff at 1.5-1.6V 24/7 without problems. Controlled temps and you *may* fine. Its debatable whether the combination of both high vcore and high (but not 100C high) temps can kill a CPU. All I can say is that high vcore alone isn't really that dangerous... as long as your motherboard and PSU are up to par.

Without a doubt, a SB can survive some amazing volts/current outside it's design spec (1.52V) if you can control temps. The issue is that software like HWM, cpuZ, realtemp etc, rely upon correct reporting from the bios... And really will not record reliably at the limits. It's those microsecond spikes that can flash a cpu. On some boards you can read the cpu package temp directly with your voltmeter.
Anyway, enjoy experimenting. That's what it is all about!
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post #3244 of 9460
Quote:
Originally Posted by Drak0 View Post

I will run an 8 hours tonight then and post an update. Should i lower the pll? i am concerned with the temp it might reach with 8 hours. its a cm 412s with a noctua on top of it, but i am not using the fan at 1500rpm (1100rpm now)

Just leave pll on auto for now. Just put it a 1500rpm during the stress test then drop it down to 1100rpm when your system is stable.
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post #3245 of 9460
Well I was able to bump my OC a little to 4.6ghz.

Additional Turbo: +0.016v
Offset: -0.005v
VTT: 1.076v
PCH: 1.068v
PLL: 1.586v
VCCSA: 0.925v

Around 1.280v - 1.288v under load so it's average tongue.gif
post #3246 of 9460
Quote:
Originally Posted by kevindd992002 View Post

I can run 47x at 1.44V and with CPU PLL 1.475V. Is that PLL too low?

Can't imagine a reason how"too low" is possible if it's stable... anybody know otherwise?

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post #3247 of 9460
Quote:
Originally Posted by Jpmboy View Post

Can't imagine a reason how"too low" is possible if it's stable... anybody know otherwise?


Only reason I can find to raise it is that it is lower than the guide states. I don't think it would hurt his chip if he were to raise it to 1.55v just to be on the safe side.
post #3248 of 9460
I lowerd my cpu pll to 1.6v @ 5ghz and i have no problems im not even going to run prime95 again if it crasehs i will raise it
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post #3249 of 9460
Messing around with -0.195 offset lol. Idles at 0.776v biggrin.gif

post #3250 of 9460
Hi guys - new to the forums and looking for some advice and feedback on overclocking my I5 3570K on an extreme 4. I've read all the guides, and experimented pretty carefully, but right now am looking for some experienced views.

So I built my new PC about 5 days ago, and its been running very well. In all honesty, haven't built or tinkered with a PC for 8 or so years, so am a little rusty with some items. PC was running stable, so started to explore overclocking my cpu. Nothing too extensive so far, but most settings I've ran P95 for 20 to 30 mins. Once settled, I'll run for multiple hours minimum.

Speed / Core Voltage / Temp:
Default Bios - 3.4 core / ~0.960 / 29-32.
ASRock Optimized 4.2 / 1.272 - 1.264 / 68-70

Custom 4.2 (All Core, 42, +0.004V Turbo, Internal PLL disabled, Power Limit and Plane Limts all 500, CPU C3, C6 and Package C all disabled):

Core Speed / Core Voltage / Temps / Offset Voltage / CPU Load Line Calibration
4.2 / +0.005 / L3 / 1.224 / 64-68
4.2 / -0.005 / L3 / 1.208 / 63-68
4.2 / -0.030 / L3 / 1.184 to 1.192 / 60-65
4.2 / -0.050 / L3 / 1.176 /
4.2 / -0.050 / L5 / 1.144 to 1.152 / 57-62
4.2 / -0.065 / L3 / 1.160 to 1.168 / 58-63

All 4.2's were stable

4.3 / -0.065 / L3 / BSOD on boot
4.3 / -0.030 / L3 / 1.2 / 61-65

Ran stable on 4.3 for limited testing

4.4 ASRock Optimized - BSOD on boot
4.4 / +0.005 / L3 / 1.240 / BSOD when in windows (didn't even get to start P95)


Few questions:
1) Concerned about going above 1.240 core volts, but haven't really exceeded temps of 70 yet. Should I push the core voltage, and/or turbo voltage higher to try and run 4.4?
2) At stock speed, the voltage seems pretty high - is this normal? I haven't tried to tweak it down but was curious how others compare.

I'd really like to push it to 4.4 or 4.5, mainly for gaming in FSX. That said, I don't want to damage the CPU by inexperienced overclocking, so would like to learn more about voltage limits etc. A little concerned by CPU is limp given it can't even load 4.4 on ASRock optimized settings.

Thanks for any feedback.


PC Specs below (will take the time to put them into signature soon)

I-5 3570K (stock right now) / CoolerMaster 212 EVO / ASRock Extreme 4 / G.Skill Ripjaws X Series 16GB DDR3-1600 / Samsung 840 Pro Series 256GB / WD Caviar Black 1TB / MSI GTX 660Ti / Corsair 200R ATX / SeaSonic 620W / Asus DRW / Win 7 64 Bit
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