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Should I lower my voltage settings? I5 2500k OC to 4ghz

post #1 of 9
Thread Starter 
Hi, I am a complete noob at overclocking and I attempted to overclock my i5 2500k processor which at stock is 3.3 ghz to 4ghz.

I went in to the bios and changed the cpu clock ratio from 33 to 40 and then changed the vcore voltage from 1.215 to 1.195.
After doing so, I ran intelburntest and it failed. Then I changed the voltage back to auto which was 1.215 and then the test worked

Although the test worked, my temperatures were around 75 C which I'm not too happy with. So the question I'm asking is, are my voltage settings fine? Or is there anything I did that is completely wrong and in fixing it would lower my temperatures. (I used RealTemp to monitor temperatures)

Here is my cpu specs (I play a lot of games, record, livestream, and render videos a lot)

Cooler master hyper 212 evo
Two 4gb ram ddr3 1600 (so 8gb of ram); ( i have the voltage set at auto which is 1.500, wondering if 1.600 would be better)
i5 2500k @ 3.3ghz (going up to 3.7ghz with turbo boost) quad core
Asus geforce gtx 680 - 2 gd5 2gb ddr5

When I changed my clock ratio from 33 to 40, I did not change any turbo boost settings. Normally the turbo boost takes my cpu from 3.3ghz to 3.7 ghz, does this mean with OC it will go from 4ghz to 4.4 ghz? Should I turn this off?

Here are the voltage settings I currently have:
CPU Vcore: 1.215V (Auto)
Dynamic Vcore (DVID): +0.000V
CPU Vtt: 1.060V
CPU PLL: 1.800V
IMC: .925V
DRAM Voltage (CH A/B): 1.500V (Should I take this up to 1.6V?)

Here are Frequency setttings
CPU Clock Ratio: I changed from 33 to 40
Cpu Frequency: It is now at 4.00Ghz

Cpu/PCIe Base Clock: 100.00 MHz
Processor Graphics Clock: 1100

System Memory Multiplier: 16.00
Memory Frequency: 1600MHz

Here is the Intel Turbo Settings
Turbo Ratio (1 core active): 37
Turbo Ratio (2 core active): 36
Turbo Ratio (3 core active): 35
Turbo Ratio (4 core active): 34

Turbo Power Limit: 95
Core Current Limit: 97
Cpu Core Enabled: 4

Any help is appreciated, as I am a complete noob to this, but really would like to see and increase in performance. For now, I'm hoping to get 4ghz running smoothly, and once I'm more familiar with overclocking, I may end up going further to around 4.5ghz, but I really want to see this work, thank you.
Edited by itzbubby - 7/3/13 at 9:52am
post #2 of 9

The reason your temps are high may be due to a lack of thermal paste in the gaps between the exposed heatpipes. If there's no thermal paste applied into those gaps, then all of that surface area isn't being used.

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i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 
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post #3 of 9
You should always manually define a voltage, don't use auto
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post #4 of 9
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

The reason your temps are high may be due to a lack of thermal paste in the gaps between the exposed heatpipes. If there's no thermal paste applied into those gaps, then all of that surface area isn't being used.

Ok, I"ll make sure I check that, thanks!
post #5 of 9
Thread Starter 
Quote:
Originally Posted by Cyro999 View Post

You should always manually define a voltage, don't use auto

So would you consider me changing the Vcore Voltage from auto (which is at 1.215) to manually 1.215V?
post #6 of 9
You can probably run 4.3-4.5ghz on 1.21vcore (and whatever auto changes it to..) so it's a really high voltage for 4ghz. Temperatures increase with voltage a lot more than frequency
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post #7 of 9
If you are hitting 75C on a 2500k @ 4GHz @ 1.215v you did not install your cooler correctly, or you put way to much thermal paste on. Those temps are way too high for a Sandy Bridge with that Heastink @ those voltages and clocks.
post #8 of 9
Quote:
Originally Posted by Cyro999 View Post

You can probably run 4.3-4.5ghz on 1.21vcore (and whatever auto changes it to..) so it's a really high voltage for 4ghz. Temperatures increase with voltage a lot more than frequency

4.3/4.5Ghz @ 1.21v would be pretty special to be honest. 1.3v generally seems to be "good" for 4.5Ghz, I've seen a lot of people needing 1.35v-1.38v for 4.5Ghz.

I would imagine 1.2v would be bang on target for 4Ghz.

Also to the OP, 75c with a 2500k @ 4Ghz/1.21v with that cooler is still safe, but too high. Check your mount!
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post #9 of 9
Quote:
Originally Posted by BiG StroOnZ View Post

If you are hitting 75C on a 2500k @ 4GHz @ 1.215v you did not install your cooler correctly, or you put way to much thermal paste on. Those temps are way too high for a Sandy Bridge with that Heastink @ those voltages and clocks.

 

This

 

Again itzbubby, the reason your temps are high may be due to a lack of thermal paste in the gaps between the exposed heatpipes. If there's no thermal paste applied into those gaps, then all of that surface area isn't being used. Until you fix it, you can't overclock (nor will I help you because your temps are too high).

 

You need to fill the gaps as described here:

 

http://archive.benchmarkreviews.com/index.php?option=com_content&task=view&id=150&Itemid=62&limit=1&limitstart=5

 

 

Quote:
Originally Posted by Cyph3r View Post


4.3/4.5Ghz @ 1.21v would be pretty special to be honest. 1.3v generally seems to be "good" for 4.5Ghz, I've seen a lot of people needing 1.35v-1.38v for 4.5Ghz.

I would imagine 1.2v would be bang on target for 4Ghz.

Also to the OP, 75c with a 2500k @ 4Ghz/1.21v with that cooler is still safe, but too high. Check your mount!

 

and this.

 

I don't mind repeating it because it's important: itzbubby, the reason your temps are high may be due to a lack of thermal paste in the gaps between the exposed heatpipes. If there's no thermal paste applied into those gaps, then all of that surface area isn't being used. Until you fix it, you can't overclock (nor will I help you because your temps are too high).

 

You need to fill the gaps as described here:

 

http://archive.benchmarkreviews.com/index.php?option=com_content&task=view&id=150&Itemid=62&limit=1&limitstart=5

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 
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 (1.400-1.424V in Manual Mode) 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 
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
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