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2500k Any tips to go any higher than 4.6GHz? - Page 2

post #11 of 20
hey munaim, does pll voltage really effect overclock? I havent messed with mine at all, it is still on auto. Do you recommend lower/raising it? Can this improve stability, or decrease vcore needed for my clocks?

Im experimenting right now to see what I can do to lower vcore on my already proven 24 hour stable overclock of 4.7ghz. I pulled out 4gb of ram(had 8gb before) and dropped vcore two notches. Blend testing right now. If this doesnt work Im going to tweek some of the other voltages. Pll and vccio maybe.

Edit: the voltage in my sig is not my 24/7 voltage. I need to update that. I actually need about 1.42 load voltage for 4.7ghz. According to cpuz.
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post #12 of 20
I may have to try this. I have a slight dancing voltage right now. I guess its normal.
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post #13 of 20
Quote:
Originally Posted by AliceInChains View Post
hey munaim, does pll voltage really effect overclock? I havent messed with mine at all, it is still on auto. Do you recommend lower/raising it? Can this improve stability, or decrease vcore needed for my clocks?

Im experimenting right now to see what I can do to lower vcore on my already proven 24 hour stable overclock of 4.7ghz. I pulled out 4gb of ram(had 8gb before) and dropped vcore two notches. Blend testing right now. If this doesnt work Im going to tweek some of the other voltages. Pll and vccio maybe.
pll indeed makes a difference. Maybe someone else could chime in as to why, but it does change things.
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post #14 of 20
Quote:
Originally Posted by AliceInChains View Post
hey munaim, does pll voltage really effect overclock? I havent messed with mine at all, it is still on auto. Do you recommend lower/raising it? Can this improve stability, or decrease vcore needed for my clocks?

Im experimenting right now to see what I can do to lower vcore on my already proven 24 hour stable overclock of 4.7ghz. I pulled out 4gb of ram(had 8gb before) and dropped vcore two notches. Blend testing right now. If this doesnt work Im going to tweek some of the other voltages. Pll and vccio maybe.

Edit: the voltage in my sig is not my 24/7 voltage. I need to update that. I actually need about 1.42 load voltage for 4.7ghz. According to cpuz.

PLL voltage doesn't seem like it actually effect's the overclock, however some have found that it helps to lower it, whilst other's have left it on auto without any problems. I have found the general sweet spot for PLL voltage is somewhere around 1.65-1.75v, however that may vary for you. You might need to increase it above 1.8v for it to help.

VCCIO can act as a substitue for vcore at times, however the higher you go the higher the temp goes. Again I have found that increasing it does in fact help lower the vcore but to a certain point. Generally people have found keeping it below 1.15 and 1.125v seems to be the best place. Maximum is 1.2v for 24/7 usage.

Unfortuantly there is no one way of checking these, as all cpu's are different and they will pretty much react in different ways. Only thing to do is grab a pen and paper and test it out and find which works better for you.
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post #15 of 20
Heres another question: Alot of people think that it is ok to use rediculous high voltages so long as temps are good. I ran a test, I went into bios and disabled llc and set vcore to 1.52. I then booted and ran p95, opened cpuz to record my load voltage. At 1.52(bios) under load cpuz registered 1.396(actual?). So if you are using llc and cpuz is saying your load vcore is 1.45 your board is actually feeding your cpu in excess of 1.55, possibly more. This may only hold true with asus boards, as I have no experience with any other p67 mfg.

I guess Im asking, what will degrade the chip faster, higher voltage with safe temps, or average voltage with high temps.

Ive got excellent cooling right now, and have not had any problem with temps. My main concern is the amount of voltage needed for anything above 4.7ghz.
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post #16 of 20
Thread Starter 
My results from 12hr Prime95 Blend test

post #17 of 20
Quote:
Originally Posted by McLaren_F1 View Post
I cant get anything stable above 4.6GHz, any suggestions on tips i should try?

Current settings for 4.6GHz

Ai Tweaker
Ai Overclock Tuner: Manual
BLCK/PCIE Frequency: 100.0
Turbo Ratio: By All Cores
By All Cores: 48
Internal PLL Voltage: Enabled
Memory Frequency: use the rated speed for your memory
DRAM Timing Control: use the rated timings for your memory
EPU Power Saving MODE: Disabled

Ai Tweaker (in the DIGI+ VRM section)
Load-Line Calibration: extreme
VRM Frequency: Manual
VRM Fixed Frequency Mode: 350
Phase Control: Extreme
Duty Control: Extreme
CPU Current Capability: 140%
CPU Voltage: Manual
CPU Voltage: 1.42V
DRAM Voltage: Auto
VCCSA Voltage: Auto
VCCIO Voltage: 1.1V
CPU PLL Voltage: 1.85V
PCH Voltage: Auto
CPU Spread Spectrum: Disabled

Advanced\\ CPU Configuration
CPU Ratio: Auto
Intel Adaptive Thermal Monitor: Disabled
Active Processor Cores: All
Limit CPUID Maximum: Disabled
Execute Disable Bit: Disabled
Intel Virtualization Technology: Disabled
Enhanced Intel SpeedStep Technology: Enabled
Turbo Mode: Enabled
CPU C1E: Enabled
CPU C3 Report: Enabled
CPU C6 Report: Enabled
Edited for my settings to 4.8ghz
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post #18 of 20
Quote:
Originally Posted by AliceInChains View Post
Heres another question: Alot of people think that it is ok to use rediculous high voltages so long as temps are good. I ran a test, I went into bios and disabled llc and set vcore to 1.52. I then booted and ran p95, opened cpuz to record my load voltage. At 1.52(bios) under load cpuz registered 1.396(actual?). So if you are using llc and cpuz is saying your load vcore is 1.45 your board is actually feeding your cpu in excess of 1.55, possibly more. This may only hold true with asus boards, as I have no experience with any other p67 mfg.

I guess Im asking, what will degrade the chip faster, higher voltage with safe temps, or average voltage with high temps.

Ive got excellent cooling right now, and have not had any problem with temps. My main concern is the amount of voltage needed for anything above 4.7ghz.
Degradation is a mixture of both voltage and temps, I would say both degrade the same. Although if temps are really low like around 60c @ 4.8-5ghz with around 1.45v i would feel comfortable pushing further. I would go above 1.5v aslong as temps are below 70c
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post #19 of 20
Quote:
Originally Posted by AliceInChains View Post
Heres another question: Alot of people think that it is ok to use rediculous high voltages so long as temps are good. I ran a test, I went into bios and disabled llc and set vcore to 1.52. I then booted and ran p95, opened cpuz to record my load voltage. At 1.52(bios) under load cpuz registered 1.396(actual?). So if you are using llc and cpuz is saying your load vcore is 1.45 your board is actually feeding your cpu in excess of 1.55, possibly more. This may only hold true with asus boards, as I have no experience with any other p67 mfg.
I would think the 1.396 is because of vdroop (since LLC is said to counteract vdroop), and that it doesn't mean the CPU is getting 1.52. Vdroop to my understanding is a control mechanism to protect the CPU at load from spiking too high.. so what you are saying would mean vdroop isn't working properly.

There's other possibilities though and I could be wrong, I forget the difference between using LLC and not using it and how that changes what the Vcore setting in BIOS means.

EDIT: oh and anything over 1.38v is above the operating conditions. I'm not sure how much faster that means the CPU degrades, personally, I would expect it to be an exponential relationship to increasing Vcores.
    
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post #20 of 20
Who says 1.38? Jw.
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