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Overclocking my i5 2500k too 5.0GHZ - Advice asked

post #1 of 27
Thread Starter 
Hello smile.gif,

So I have successfully OC my CPU to 4.5GHZ at 1.300v but I would like to go all the way too 5GHZ, Sadly I don't know what I have to do next.

My PC specs are as followed:

Intel Core i5 2500K
Zalman CNPS9900A LED
Corsair Vengeance 12GB
CrossFireX Sapphire HD6870
Asus P8P67 REV 3.1
XFX 750w Black Edition
Samsung HD103SJ 1TB
Samsung HD321KJ 320GB
Windows 7 Ultimate 64bit
CM Storm Enforcer


Best regards,

Robert Oortwijn
Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
  hide details  
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Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
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post #2 of 27

5 GHz can be very difficult with air cooling.  Some 2500Ks can do it, others can barely get past 4.7 GHz.

 

Is 4.5 GHz stable right now?  What have you done so far to test its stability?  I mean, I am used to seeing 4.5 GHz needing about 1.34-1.35V under full load.

It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
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It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #3 of 27
With 16GB RAM my 2500K eats up 1.5v. With 2x4GB I can squeak by with 1.47~

You have listed 12GB which in the right configuration can make it harder.

Like 2 cables said.... Not all chips can do it on air.
post #4 of 27
Thread Starter 
I ran Prime95 for 30min before I had to shutdown because I would have school the next day.
Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
  hide details  
Reply
Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
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post #5 of 27

For the record, I never attempted anything higher than 4.8 GHz.  The reason is that 4.7 GHz for me requires about 1.368V under full load, but then 4.8 GHz requires about 1.408V to 1.416V under full load.  So, I didn't want to find out what 4.9 GHz and then 5.0 GHz would have needed.  1.408V - 1.416V was high enough for me for 24/7 use!

 

I'm actually back at 4.7 GHz now because I became much too uncomfortable with that extra 0.048V just for an extra 100 MHz.

It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #6 of 27
Quote:
Originally Posted by galaxy366 View Post

I ran Prime95 for 30min before I had to shutdown because I would have school the next day.

 

Well, in order to know if it's stable, most of the experts around here recommend 12 hours minimum of Prime95's Blend test.  This is with Prime95 v27.7 build 2.  Better yet, use Custom Blend and set it to use about 90% of your memory.

 

If this sounds impossible, then I suggest trying it this way:

 

  1. Start the test when you go to bed
  2. Wake up and check the computer while getting ready for school
  3. If it's still running, leave it and go to school.
  4. By the time you come home, I bet that at least 15 hours will have passed since you started it.

 

So, this guarantees that your system will have at least 12 hours to run Prime95.

 

I recommend doing this before going further because so far, all you know is that it can run Prime95 for 30 minutes, and 30 minutes isn't much at all.

It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #7 of 27
Thread Starter 
Thanks for the tip! smile.gif
Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
  hide details  
Reply
Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
  hide details  
Reply
post #8 of 27

You're welcome!

It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #9 of 27
12GB? how are the rams setup?
Second Intel Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
2700 4.5/ 1.28 77 290 (2) 16 / 1866 
Hard DriveCoolingOSMonitor
1000 360/240 10 64 28 2160 
PowerCase
850 540 
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Second Intel Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
2700 4.5/ 1.28 77 290 (2) 16 / 1866 
Hard DriveCoolingOSMonitor
1000 360/240 10 64 28 2160 
PowerCase
850 540 
  hide details  
Reply
post #10 of 27
Thread Starter 
How do you mean? The speed?
Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
  hide details  
Reply
Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
  hide details  
Reply
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