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MAX SAFE OVERCLOCK I5 2500K

post #1 of 63
Thread Starter 
Hello I would like to ask what is the max safe overclock that I can overclock my cpu to without decreasing its lifespam cause im planning to keep this system for about 3-5 years at least.
my specs are
i5 2500k @ 4.2 GHz at stock voltage (1.296 Vcore) I haven't messed woth the voltages yet. Max temps after 10hrs or prime are 61 degrees
corsair h60 cou cooler
haf 912 plus
corsair vengeance 8gb ram
evga gtx 560ti
corsair gs 700
gigabyte z68x ud3h b3 (rev 1.3) with U1L bios

So I am thinking of going from 4.2 to 4.5 GHz. will this reduce the life of my cpu?
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CPUMotherboardGraphicsRAM
Core i5 2500k Gigabyte GA-Z68X-UD3H-B3 Evga GTX 560Ti FPB Corsair Vengeance 8GB 1600MHz 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB WD Caviar Green 2TB Thermalright Silver Arrow IB-E Extreme Windows 8.1 64-bit 
MonitorPowerCase
Samsung S24B350 Corsair GS 700 Coolermaster Haf 912 Plus 
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My Battlestation
(11 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 2500k Gigabyte GA-Z68X-UD3H-B3 Evga GTX 560Ti FPB Corsair Vengeance 8GB 1600MHz 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB WD Caviar Green 2TB Thermalright Silver Arrow IB-E Extreme Windows 8.1 64-bit 
MonitorPowerCase
Samsung S24B350 Corsair GS 700 Coolermaster Haf 912 Plus 
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post #2 of 63
shouldnt do biggrin.gif raising the voltage a little to get there shouldnt be a problem im at 4.5ghz at 1.33?v works like a charm biggrin.gif just dont raise your voltage too high tongue.gif

edit typo 1.36 instead of 1.33
Edited by lordhinton - 6/2/13 at 12:49pm
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post #3 of 63

Not as much as a voltage increase would. I think that as long as you keep the voltage under ~1.35V in Windows, then the CPU's lifespan shouldn't be affected that much at all, especially if the most demanding thing you do is play video games. It would be a bigger concern if you were to keep it under load 24/7 for several months in a row by doing things like Folding or BOINCing.

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... 
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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... 
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Reply
post #4 of 63
Thread Starter 
So you say I should go to 4,5 and this will have no impact unless I stay below 1.35V what about max temps?
My Battlestation
(11 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 2500k Gigabyte GA-Z68X-UD3H-B3 Evga GTX 560Ti FPB Corsair Vengeance 8GB 1600MHz 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB WD Caviar Green 2TB Thermalright Silver Arrow IB-E Extreme Windows 8.1 64-bit 
MonitorPowerCase
Samsung S24B350 Corsair GS 700 Coolermaster Haf 912 Plus 
  hide details  
Reply
My Battlestation
(11 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 2500k Gigabyte GA-Z68X-UD3H-B3 Evga GTX 560Ti FPB Corsair Vengeance 8GB 1600MHz 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB WD Caviar Green 2TB Thermalright Silver Arrow IB-E Extreme Windows 8.1 64-bit 
MonitorPowerCase
Samsung S24B350 Corsair GS 700 Coolermaster Haf 912 Plus 
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post #5 of 63
Quote:
Originally Posted by Kozanitis96 View Post

So you say I should go to 4,5 and this will have no impact unless I stay below 1.35V what about max temps?

 

The thing about 4.5 GHz is that 1.35V in Windows is about what you may need to keep it stable.

 

Temps are less of a concern, but your average temps should end up being very safe anyway, in the 60s or lower. Your Prime95 temps will probably go over 70 a little, but 70 isn't a maximum safe temperature.

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 63
Thread Starter 
Ok thanks and something else how many hours should I do in prime 95?
what I do now is 8-10 hrs in the in place fft test.
is this the correct test?
My Battlestation
(11 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 2500k Gigabyte GA-Z68X-UD3H-B3 Evga GTX 560Ti FPB Corsair Vengeance 8GB 1600MHz 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB WD Caviar Green 2TB Thermalright Silver Arrow IB-E Extreme Windows 8.1 64-bit 
MonitorPowerCase
Samsung S24B350 Corsair GS 700 Coolermaster Haf 912 Plus 
  hide details  
Reply
My Battlestation
(11 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 2500k Gigabyte GA-Z68X-UD3H-B3 Evga GTX 560Ti FPB Corsair Vengeance 8GB 1600MHz 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB WD Caviar Green 2TB Thermalright Silver Arrow IB-E Extreme Windows 8.1 64-bit 
MonitorPowerCase
Samsung S24B350 Corsair GS 700 Coolermaster Haf 912 Plus 
  hide details  
Reply
post #7 of 63
Keep the voltage under 1.4v and temps below 75c and you will be fine.
post #8 of 63
Are you sure 1.296v is stock volt for 2500k? I didnt think it was that high when I had my old 2500k.

At any route, stay under 1.4v and stick to 70s C in temperature and you should be fine.

I would prime for 12hrs before calling stable.
post #9 of 63
Quote:
Originally Posted by Kozanitis96 View Post

Ok thanks and something else how many hours should I do in prime 95?
what I do now is 8-10 hrs in the in place fft test.
is this the correct test?

 

As far as the preset Prime95 tests go, the Blend test is the best one to run, and I would go for 12 hours minimum.

 

The absolute best Prime95 test I know of is the Custom Blend test. That is, select Custom while Blend is selected and this will enable you to tell Prime95 to use about 90% of your installed memory (you'll need a calculator of course). Also, make sure your version of Prime95 is at least 27.7. The current version is 27.9, but 27.7 is the first version to take advantage of the AVX instruction set which makes the test much more effective on both Sandy and Ivy Bridge (and now Haswell too, of course).

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 #10 of 63
Quote:
Originally Posted by TwoCables View Post

Not as much as a voltage increase would. I think that as long as you keep the voltage under ~1.35V in Windows, then the CPU's lifespan shouldn't be affected that much at all, especially if the most demanding thing you do is play video games. It would be a bigger concern if you were to keep it under load 24/7 for several months in a row by doing things like Folding or BOINCing.
You could probably do as high as 1.45V (actual voltage, some boards report their voltages way too low), and there would be no damage, if you aren't at 100% load constantly, as long as it is well cooled.
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