i5 2500k fails at OC and gives unusually high temps even without

Kikk · Jul 7, 2012

Hi all, I'm new to overclocking and this is my first post here.

A year after building a new PC, I now want to overclock it. I started from my processor and followed this guide to the letter. I've got a variety of failures including BSOD at startup, BSOD before startup, freezing after startup, prime95 BSOD and prime95 fatal rounding error. I even tried increasing the voltage all the way to 1.38 with no improvements.

Also, I've had unusually high CPU temps long before I started experimenting with OC. My non-OC idle temps are 38c-40c and load temps 55c. OC idle temps are 42-45. I never saw OC load temps before failure... Mind you that I have CM hyper 212+ cooler installed. Ambient temperature is around 24c. I applied thermal paste according to the Arctic Silver official instructions
and this guide. I've reinstalled the Cooler once but got similar temps before and after.

I really appreciate any insights and solutions offered!

System specs
Video Card: NVIDIA GeForce GTX560 Ti AMP 1 GB
CPU: Intel Core i5 2500K 3,3 GHz LGA1155
Aftermarket Cooler: Cooler Master Hyper 212+
Power Supply: Corsair TX850W V2 Enthusiast
RAM: Corsair Vengeance 2x4 GB 1600MHz DDR3
Hard drive: Western Digital Caviar Black 750 GB SATA 6 Gb/s
Motherboard: P8Z68-V
Case: Cooler Master 690 II Advanced

Operating system: Windows 7 64 bit
Bios version: 3402 (Newest)

Rod911 · Jul 7, 2012

Going with an old post of mine, but it's a good one:

Rod911 said:
I really to hate sounding like a broken record here (posted these links in a good half of my own posts here...), but if you've got an Asus P8P67 or P8Z68 based motherboard, these two links are one of the best places to start:

Link
Link

redduc900 · Jul 7, 2012

Fill out this P8Z68-V Pro BIOS template w/ all of the settings as they were when you tried for a 4.5GHz clock. Depending on the rated timings and voltage for your RAM, the settings below should net you a 4.6GHz clock from your 2500. If you decide to use these settings, make sure to first change the DRAM timings and voltage if necessary to match those of your specific modules.

Code:

[B]** Ai Tweaker **[/B]
Ai Overclock Tuner: Manual
BLCK/PCIE Frequency: 100
Turbo Ratio: By All Cores
By All Cores: x46
Internal PLL Overvoltage: Disabled
Memory Freq: 1600
DRAM Timing Control: 9-9-9-24-CR1
EPU Power Saving Mode: Enabled
EPU Setting Mode: Max Power
 
[B]** Ai Tweaker\ CPU Power Management> **[/B]
CPU Ratio: Auto
Enhanced Intel Speed Step Tecnology: Enabled
Turbo Mode: Enabled
Long Duration Power Limit: Auto
Long Duration Maintained: Auto
Short Duration Power Limit: Auto
Additional Turbo Voltage: Auto
Primary Plane Current Limit: Auto
 
[B]** Ai Tweaker\ (in the Digi+ VRM section) **[/B]
Load Line Calibration: Ultra High
VRM Frequency: 350
Phase Control: Extreme
Duty Control: Extreme
CPU Current Capability: 140%
CPU Voltage: Offset Mode
Offset Mode Sign: ( - )
CPU Offset Voltage: 0.010
DRAM Voltage: 1.65000v
VCCIO Voltage: 1.10000v
CPU PLL Voltage: 1.60000v
PCH Voltage: Auto
CPU Spread Spectrum: Disabled
 
[B]** Advanced\ CPU Configuration> **[/B]
CPU Ratio: Auto
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: Enabled
CPU C3 Report: Disabled
CPU C6 Report: Disabled

i5 2500k fails at OC and gives unusually high temps even without

Kikk

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Rod911

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redduc900

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