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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 682

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post #6811 of 9531
Just OC'd my 2600K to 4.5 Ghz, ran 20 minutes of Prime95 with no errors, manual voltage in BIOS set to 1.395 V (anything lower, and I crash in a few minutes). However, at a few points during the test, my temps got up to 87-89, with my cooler being Hyper 212 EVO (for most of the test, though, I stayed around 75). Before I try for a longer test, is that safe and normal?

Are those the expected temps for a 212 EVO on such voltage, or could my cooler be badly seated, or something?
Also, keep in mind, it's the middle of summer here, the weather is very hot.
post #6812 of 9531
Overclock using offset and Additional turbo voltage. There is no reason to run fixed voltage and 1.4v for 4.5ghz seems way too high. You should also run P95 for 8 + hours, 20 minutes is not long enough to confirm its stable
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post #6813 of 9531
Quote:
Originally Posted by Lucky 23 View Post

Overclock using offset and Additional turbo voltage. There is no reason to run fixed voltage and 1.4v for 4.5ghz seems way too high. You should also run P95 for 8 + hours, 20 minutes is not long enough to confirm its stable
Alright, will play with offset, then.

Also, true, 1.4v seems high to me as well, compared to the results I've seen over the Internet. Seems I just have a pretty bad chip... and yeah, I'm planning for a 12 hours P95 run, that 20 minute was just a test to see if I can get somewhere without crashing immediately.
post #6814 of 9531
I need to get a better CPU cooler. Got my 2500k up to 4.0 and the temps go just a few degrees above optimal on a couple cores. I know the cooler I have now is nowhere near a good one. Just a cheap cooler I got when this combo of parts was being used as my "Gaming" HTPC to replace the stock cooler.
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post #6815 of 9531
I remember reading this guide a very long time ago to overclock and I got really stable at 4.4ghz but couldnt get past it, but was satisfied. Now half a year later im reading this guide again and see a warning to NOT set the voltage (not the turbo offset) to farther negative, but my settings right now have that offset at -0.035 volts to, i assume, have lower heat and power usage. Again, it has been stable for half a year, but is it bad to give it less power?

it took a long time to find a stable 4.5ghz, but i set the cpu voltage offset to the guide specified +0.005 but my turbo needs to be +0.037
This is a huge jump for just 0.1ghz and a lot higher temps because of the voltage. Am i doing something wrong?
post #6816 of 9531
Negative Offset is fine, it just means that voltage used(even when at idle.) is lower compared to a positive offset. The problem comes when you set it too low that idle is unstable(which doesn't sound like something you will have to worry unless you want even lower volt usage.).

As for the volt needed/temp jump from 4.4 to 4.5, that is common with most processors. No matter what you will hit a ramp where it requires a lot more volts in order to be stable for the next step. For Ivy Bridge that is around 4.4-4.5 give or take.
post #6817 of 9531
How do I find the VID on my CPU?

Under load, RealTemp says 1.3861, is that it, or should I disable EIST and C1E to get an accurate reading, as I've seen mentioned somewhere?
post #6818 of 9531
Quote:
Originally Posted by Teh Bottleneck View Post

How do I find the VID on my CPU?

Under load, RealTemp says 1.3861, is that it, or should I disable EIST and C1E to get an accurate reading, as I've seen mentioned somewhere?

That is you VID. Just pay attention to what is displayed in CPU-z
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CPUMotherboardGraphicsGraphics
I7 6700K @ 4.5ghz  Gigabyte Z170x Gaming 6 XFX R9 290x 8GB XFX R9 290x 8GB 
RAMHard DriveHard DriveCooling
Gskill RipJaws V 16GB 3000mhz Samsung 850 EVO 250GB Seagate Barracuda 2TB EK-Supremacy EVO CPU Water Block 
CoolingCoolingCoolingCooling
EK R9 290X GPU Waterblocks EK-XRES 140 Revo D5 PWM Pump Alphacool NexXxoS 360mm ST30 Alphacool NexXxoS 240mm ST30 
CoolingCoolingOSMonitor
Alphacool NexXxoS 120mm ST30 Cooler Master Jetflo 120mm Fans Windows 10  LG 34UC88 
KeyboardPowerCaseMouse
Quickfire TK red switch Cooler Master V1000 MasterCase Pro 5 CM Storm Havoc 
CPUMotherboardGraphicsGraphics
I5 2500K @ 4.6ghz  ASRock Z68 Extreme 3 Gen 3 ASUS 7870 Ghz Edition ASUS 7870 Ghz Edition 
RAMHard DriveHard DriveOptical Drive
Gskill RipJaws X 16GB 1600mhz Seagate 2TB Seagate 320GB ASUS Burner 
CoolingCoolingCoolingOS
Cooler Master Eisberg 240L + 120mm Rad Koolance 3/8 x 1/2 Compression Fittings PrimoChill Advanced LRT Windows 7  
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Ubuntu 12.04 ASUS 24" Cooler Master Quickfire TK  Cooler Master V1000 
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post #6819 of 9531
Quote:
Originally Posted by TwistedTime View Post

Negative Offset is fine, it just means that voltage used(even when at idle.) is lower compared to a positive offset. The problem comes when you set it too low that idle is unstable(which doesn't sound like something you will have to worry unless you want even lower volt usage.).

As for the volt needed/temp jump from 4.4 to 4.5, that is common with most processors. No matter what you will hit a ramp where it requires a lot more volts in order to be stable for the next step. For Ivy Bridge that is around 4.4-4.5 give or take.

ok, yea i found that ramp to be pretty steep. but i didn't have PLL overvoltage enabled so maybe that would help? even though guide says usually for 4.7+ghz
post #6820 of 9531
Quote:
Originally Posted by Lucky 23 View Post

That is you VID. Just pay attention to what is displayed in CPU-z
Right, thanks. One more thing, if I may:

Just failed a Prime blend test after a few hours running 4.5 Ghz @ 1.395v. Seems I have a really bad chip on my hands, so in your professional opinion, should I "pursue performance", up the voltage to 1.4v and have another, final try for 4.5, or backtrack down to ~1.330v, which is needed for stable 4.4 Ghz?
Edited by Teh Bottleneck - 7/28/13 at 12:45pm
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