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Help me OC my 2500k on p67 ex 4 mobo

post #1 of 27
Thread Starter 
Ok so I've read a lot of guides about this mobo/processor combination but I can't quite get 4.5GHZ yet. I had 4.3 running stable. Here are my settings in UEFI. Let me know if there's anything I can change. I'm particularly curious about LLC and BLCK settings. If I'm trying for 4.5-5.0ghz do I need the LLC at Level 1 or Level 5?

CPU Ratio Setting: Manual
Max Ratio: 45
Internal PLL Overvolate: Disabled
Intel Speedstep: Enabled
Turbo Boost Power Limit: Manual
Short Duration Power Limit: 250
Long Duration Power Limit: 200
Additional Turbo Voltage: Auto
Core Current Limit: 160
Host Clock Override (BLCK): 100
Spread Spectrum: Disabled
Power Save Mode: Disabled
CPU Core Voltage: 1.400V
Load Line Calibration: Level 4
DRAM Voltage: 1.5v
PCH Voltage: 1.612v
CPU PLL Voltage: 1.857
VTT Voltage: 1.116
VCCSA Voltage 0.925

Everything in "Advanced" is Enabled or Auto
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post #2 of 27
LLC try it on Max setting or Auto
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post #3 of 27
Thread Starter 
Quote:
Originally Posted by dseg View Post
LLC try it on Max setting or Auto
The diagram on LLC is sort of confusing me, is Level 1 or Level 5 the highest?

(I thought 5 was the highest but then read 1 is the highest (lol?))
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post #4 of 27
Try the Sandy Bridge Overclocking guide in my sig
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post #5 of 27
Set LLC to auto n try that. That pretty high voltage for 4.5GHz. You might have reached the chips limits.

1.Approximately 50% of CPUs can go up to 4.4~4.5 GHz
2.Approximately 40% of CPUs can go up to 4.6~4.7 GHz
3.Approximately 10% of CPUs can go up to 4.8~5 GHz (50+ multipliers are about 2% of this group)

Official ASUS OC research.
post #6 of 27
Thread Starter 
Quote:
Originally Posted by munaim1 View Post
Try the Sandy Bridge Overclocking guide in my sig
Hey I have a question for you. I just saw you mention the Short Duration and Long Duration in another thread. If I'm going 4.5GHZ plus should it be higher than 250/200? I'll read your guide, thanks
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post #7 of 27
Change PLL to 1.7 also.
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post #8 of 27
Thread Starter 
Quote:
Originally Posted by mgrman View Post
Change PLL to 1.7 also.
The CPU PLL Voltage?
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post #9 of 27
Quote:
Originally Posted by Heazy View Post
Hey I have a question for you. I just saw you mention the Short Duration and Long Duration in another thread. If I'm going 4.5GHZ plus should it be higher than 250/200? I'll read your guide, thanks
Doesn't really matter what you set them to, as long as they're above 150 I believe it should work fine, so just set them to 300 each and you don't have to worry about the multiplier throttling
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it looks alive
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Sandy Transformed
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CPUMotherboardGraphicsRAM
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Hard DriveHard DriveCoolingOS
Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
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post #10 of 27
Thread Starter 
Quote:
Originally Posted by munaim1 View Post
Doesn't really matter what you set them to, as long as they're above 150 I believe it should work fine, so just set them to 300 each and you don't have to worry about the multiplier throttling
Ok I'm going to change:

Core Current Limit: From 160 to 250
Short % Long Duration: From 250/200 to 300/300
LLC: Auto (I still dont know if 1 or 5 is the highest)
CPU PLL Voltage: From 1.812 to 1.7

This sounding more like it?
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Work Horse 2.0
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