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I7 2600k 4.8ghz cant get it stable

post #1 of 18
Thread Starter 
Hey guys if you remember my thread here
http://www.overclock.net/intel-cpus/...-11-hours.html
so i am having a problem with my 4.8ghz i can run prime95 for 11 hours and then my pc crash after some time.

my current settings:

Ai Tweaker:
-Ai Overclock Tuner: Manual
-BCLK/PEG Frequency: 100.0
-Turbo Ratio: By All Cores (Can Adjust in OS)
-By All Cores (Can Adjust in OS): 48
-Internal PLL Overvoltage: Enabled
-Memory Frequency: DDR3-1600MHz
-Memory bandwidth booster: Disabled
-EPU Power Saving Mode: Disabled
-DRAM Timing Control: 8-8-8-24-2.
-CPU Power Management:
-CPU Ratio: 34
-Enhanced Intel SpeedStep Technology: Enabled
-Turbo Mode: Enabled

-Vcore pwm mode: extreme
-vcore mos volt control: auto
-Load-line Calibration: Ultra 75%
-VRM Frequency: Manual
-Vrm fixed frequency mode: 350
-Vcore over current protection: 100
-Vrm Over temperature protection: Enabled
-Vdram switching frequency: Auto
-Vdram Full phase control: Auto
-Vdram over Current protection: Disabled
-Vccsa switching frequency: Auto
-Vccsa Full phase control: Auto
-Vccsa over Current protection: Disabled
-Vccio switching frequency: Auto
-Vccio Full phase control: Auto
-Vccio over Current protection: Disabled

-CPU Voltage: Manual Mode
-CPU Manual Voltage: 1.4V
-Dram Voltage: Auto
-Dram data ref voltage on cha: Auto
-Dram ctrl ref voltage on cha: Auto
-Dram data ref voltage on chb: Auto
-Dram ctrl ref voltage on chb: Auto
-VCCSA Voltage: Auto
-CPU PLL Voltage: Auto
-Pch voltage: Auto
-Pch rcc voltae: Auto
-Cpu spread spectrum-disabled

CPU Configuration:
-Intel Adaptive Thermal Monitor: Enabled
-Hyper-threading: Enabled
-Active Processor Cores: All
-Limit CPUID Maximum: Disabled
-Execute Disable Bit: Enabled
-Intel Virtualization Technology: Disabled
-Turbo Mode: Enabled
-CPU C1E: Disabled
-CPU C3 Report: Disabled
-CPU C6 Report: Disabled
-Package c state limit: No limit.

What do i need to change to get 100% stability?
thanks!
Edited by someonewhy - 6/20/11 at 6:23am
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post #2 of 18
Bump your Vcore by a notch and retry.

Easiest thing to do would be to:
1. Bump Vcore a notch and do a 20 runs on LinX maximum memory (it'll keep your CPU busy for 1h)
2. If it passes then run Prime95 blend 24 h
3. If LinX fails, bump Vcore and retry LinC

Remember to keep an eye on your temps

Good luck
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post #3 of 18
Thread Starter 
Quote:
Originally Posted by Kerian View Post
Bump your Vcore by a notch and retry.

Easiest thing to do would be to:
1. Bump Vcore a notch and do a 20 runs on LinX maximum memory (it'll keep your CPU busy for 1h)
2. If it passes then run Prime95 blend 24 h
3. If LinX fails, bump Vcore and retry LinC

Remember to keep an eye on your temps

Good luck
as i remember my temps was
73-80-80-80 with prime95 is that fine?
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post #4 of 18
11 hours is pretty much stable. Your temps are too high though.
post #5 of 18
Quote:
Originally Posted by someonewhy View Post
as i remember my temps was
73-80-80-80 with prime95 is that fine?
temps are a little high, but you may want to disable turbo core. Try turning off speedstep aswell.
That could be doing it, also what is your vcore dropping to under load?
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post #6 of 18
Quote:
Originally Posted by someonewhy View Post
as i remember my temps was
73-80-80-80 with prime95 is that fine?
I would go 85°C MAX with LinX.

LinX will push your CPU way beyond Prime95, so when you read 80°c with Prime95 you can expect 85-90°C with LinX.

It's up to you.

You may be able to find the Intel's max temps for i7 2600K.
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post #7 of 18
What kind of fans do you have on your noctua? Are you already doing a push/pull?
Personally I don't use the Linx, has never created a stable o/c for me. I go with 8/12 hrs blend prime95, and if it is still unstable I make adjustments depending on the bsod.

Quote:
Originally Posted by someonewhy View Post
so i am having a problem with my 4.8ghz i can run prime95 for 11 hours and then my pc crash after some time.
If you are getting a blue screen right down the error code. It may just need a slight bump in vcore, or it could be totally unstable.
Edited by 0m3g4 - 6/20/11 at 6:37am
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post #8 of 18
Thread Starter 
Quote:
Originally Posted by 0m3g4 View Post
temps are a little high, but you may want to disable turbo core. Try turning off speedstep aswell.
That could be doing it, also what is your vcore dropping to under load?
Quote:
Originally Posted by 0m3g4 View Post
What kind of fans do you have on your noctua? Are you already doing a push/pull?
Personally I don't use the Linx, has never created a stable o/c for me. I go with 8/12 hrs blend prime95, and if it is still unstable I make adjustments depending on the bsod.



If you are getting a blue screen right down the error code. It may just need a slight bump in vcore, or it could be totally unstable.
If i disable turbo mode my ram MHZ jumps over 3000MHZ i cannot adjust it to 1600 anymore and no i dont want to disable speedstep its important to keep the cpu not under load when you surf and net and other stuff..
and i am using noctua regular fans...[2fans push out the air from the case]
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post #9 of 18
I wouldn't leave DRM voltage on AUTO.
Set it to the requiered voltage as it's written on your modules.
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post #10 of 18
Quote:
Originally Posted by someonewhy View Post
If i disable turbo mode my ram MHZ jumps over 3000MHZ i cannot adjust it to 1600 anymore and no i dont want to disable speedstep its important to keep the cpu not under load when you surf and net and other stuff..
and i am using noctua regular fans...[2fans push out the air from the case]
Turning speedstep and turbo boost off, are part of finding your max o/c.
I don't understand why your ram would spike in speed with turbo boost off? It is a setting for the cpu to jump in frequency. Maybe you have missed some setting that would cause your ram to fluctuate like that with turbo off?
I am just offering solutions, also when you start your o/c it is better to turn your ram speed down to rule it out as a possible culprit.
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