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Help for OC i5 2500K on ASrock P67 Extreme4

post #1 of 7
Thread Starter 
Greetings,

Last year I've asked for help OC'ing my i5 2500k to 4.4ghz, with the forums help I had successfully OC'ed my CPU using offset mode. I had passed all the Prime95 tests that people had recommended. Unfortunately after a couple of months random BSOD's occured, mainly while my PC was idle. Eventually it also happened during gaming, at that point I decided to update my BIOS and run it on stock again.

Last night I decided to try and OC my old CPU again. This time I thought about trying fixed mode (I will post the settings I used below). With these settings I completed Intel Burn Test for 20 passes on very high, max degrees logged was 84. A bit too high for my liking but alas no BSOD. When going to bed I let it run a Prime95 blend test, in the morning I noticed there was a BSOD. Reading the log file it seems to have happened after 5 hours.

I hope anyone can point me in the right direction. I find it odd that it passed the Intel Burn Test, but not the Prime95 blend.

My settings used for the OC:

Load Optimized CPU OC setting - Disabled
CPU Ratio - Manual (44)
Host Clock Override (BCLK) - 100
Spread Spectrum - Disabled
Intel Speedstep Technology - Disabled
Intel Turbo Boost technology - Enabled
Additional Turbo Voltage - Auto
Internal PLL Overvoltage - Disabled
Long Duration Power Limit - 500
Long Duration Maintained - Auto
Short Duration Power Limit - 500
Primary Plane Current Limit - 500

DRAM Timing - XMP 1.3 Profile 1

Voltage Configuration
Power Saving Mode - Disabled
CPU Core Voltage - Fixed Mode
CPU Vcore - 1.35V
CPU Load-Line Calibration - Level 3 (Have level 1 to 5)
DRAM Voltage - 1.5V (auto)
VTT Voltage - Auto
PCH Voltage - Auto
CPU PLL Voltage - Auto
VCCSA Voltage - Auto

Advanced CPU Configuration
Active Processor Cores - All
Enhanced Halt State (C1E) - Enabled
CPU C3 State Support - Enabled
CPU C6 State Support - Enabled
Package C State Support - Auto

CPU Thermal Throttling - Enabled
No-Execute Memory Protection - Enabled
Intel Virtualization Technology - Enabled
Hardware Prefetcher - Enabled
Adjacent Cache Line Prefetch - Enabled

My PC spes:
CPU: i5 2500K
Mobo: ASrock P67 Extreme4
Cooler: Scythe Mugen 2 Rev.B
GPU: MSI GTX 970
RAM: Ballistix 16 GB DDR3-1600
PSU: Corsair Enthusiast TX750 V2
Edited by Reydan - 9/22/17 at 1:51am
post #2 of 7

Increase your core voltage. Prime95 is very different from Linpack (Intel Burn Test).

It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #3 of 7
Thread Starter 
Hey twocables thanks for the reply.

I've been quite busy past week, but I did had some time to play around with my CPU. I was reading some old forums on OC'ing the 2500k. And some succeeded in keeping everything on stock and just changing the multiplier.

So I gave that a shot, I changed everything back to standard settings. I disabled Spread Spectrum and change LLC to level 3, upped the multiplier to 4.3.

I've let Prime95 run on standard Blend mode for 23 hours, and no BSOD or any warnings.

These are my results:


HWmonitor


Prime95 Blend


What other tests can I do for checking if it's stable?
post #4 of 7
Seems like you are doing it right, however, vcore seems high for just 4.4ghz OC. I can get 4.7ghz on 1.325v. I set my CPU LLC up to level 4 (of 5) also. I noticed you are on level 3. I do remember these chips being able to handle 1.4v fairly well if you need to go higher on vcore. I am not a huge fan of Prime testing since I never go that long during gaming. My thoughts are, there is no need to let it run overnight if you would never put your PC in that situation. I only game a couple of hours here and there so intel burn test is enough for me as far as stress testing goes.
MIVE
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k (4.7ghz at 1.33v) Asus Maximus IV Extreme MSI GTX 980 Ti 6G Gaming  8GB (2x4GB) G. Skil Sniper  
Hard DriveCoolingOSMonitor
Crucial M4 Corsair H105 Windows 10 x64 Asus ROG Swift 
KeyboardPowerCaseMouse
Corsair K70 RGB Rapidfire OCZ ZX1000W Corsair 600C Corsair M65 Pro 
AudioOtherOther
V-Moda Crossfade Wireless headphones Sennheiser HX 6XX headphones Schitt Fulla 2 DAC/AMP 
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MIVE
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k (4.7ghz at 1.33v) Asus Maximus IV Extreme MSI GTX 980 Ti 6G Gaming  8GB (2x4GB) G. Skil Sniper  
Hard DriveCoolingOSMonitor
Crucial M4 Corsair H105 Windows 10 x64 Asus ROG Swift 
KeyboardPowerCaseMouse
Corsair K70 RGB Rapidfire OCZ ZX1000W Corsair 600C Corsair M65 Pro 
AudioOtherOther
V-Moda Crossfade Wireless headphones Sennheiser HX 6XX headphones Schitt Fulla 2 DAC/AMP 
  hide details  
Reply
post #5 of 7
Thread Starter 
He spacegoast thanks for the reply.

Yeah temps are a little high but I don´t think it will get that high during gaming anyway. And it´s only 4.3 atm, but I am glad that i´ve atleast passed the Prime95 blend test for 23hours.

I might try and tweak it a little to get it lower with the vcore. But like I mentioned before everything is on standard settings (auto). So i've no clue how to get it lower and to get it correct.
post #6 of 7

The problem is, these ASRock motherboards are infamous for reporting vcore incorrectly. Look at CPU-Z and Hardware Monitor. Both are showing extremely different readings: 1.256V from HWMonitor and 1.152V from CPU-Z. I mean, it's like, which one do we go by? The only way to find out is by setting your core voltage manually, and then go with the reading that is closer to your setting.

It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #7 of 7
Thread Starter 
Yeah during Prime95 blend, HWmonitor showed 1.344V and CPUZ 1.312V.

I could try to put the voltages manual, I think I need atleast 1.3V for 4.3GHZ on my chip tho.
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