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Please could someone check my BIOS screenshots? First time OC i5-2500k, P8z68-V

post #1 of 6
Thread Starter 
Hi,

I've had an i5-2500k running at stock since 2011 because I find overclocking really confusing. I've decided to give it a try again with a 4.5Ghz overclock. I'm using an Asus p8z68-V motherboard and this ram.

For starters here are my BIOS screenshots. Could someone please check if I've got them right?

http://imgur.com/a/8IQ15

If they look right in principle then I'll move on to benching and testing and such.

Thank you!!!
post #2 of 6
Quote:
Originally Posted by chumgoob View Post

Hi,

I've had an i5-2500k running at stock since 2011 because I find overclocking really confusing. I've decided to give it a try again with a 4.5Ghz overclock. I'm using an Asus p8z68-V motherboard and this ram.

For starters here are my BIOS screenshots. Could someone please check if I've got them right?

http://imgur.com/a/8IQ15

If they look right in principle then I'll move on to benching and testing and such.

Thank you!!!

 

Internal PLL Overvoltage can be set to Disabled. This can speed up the POST time a little bit. ;)

 

You may want to set Memory Frequency to DDR3-1600 to match your memory. I'm not sure if this is necessary, but it might be. I don't know.

 

You may even find that you want to go into the DRAM Timing Control section to manually set the first 5 timings (the "Primary Timings").

 

You might find that you'd rather use the Manual Voltage instead of Offset because it's possible Manual Mode will be more stable and provide slightly better performance. That's what I found anyway.

 

If you insist on staying with Offset Mode though, then I'd like to know how you arrived at +0.005V. I mean, is this what someone told you to use? The offset voltage is an offset of the VID, and some CPUs can have very different VIDs (the offset is an added or subtracted voltage to or from the current VID no matter what it is at any given time, but it's calculated after vDroop). More than that, each multiplier and clock speed has its own VID, and again, some CPUs can have very different VIDs. So, +0.005V for one CPU could be very different for another, even at the same clock speed and multiplier on the same model motherboard, etc. The offset voltage isn't something that's the same for all CPUs, even if you had like 50 different 2500Ks. You could have 50 different actual voltages from +0.005V with everything else being the same.

 

Another thing to look at if you wish to keep Offset Mode enabled is, you will probably need to disable C3 and C6 because having these set to Auto or Enabled usually ends up causing instability while idling or while under light loads. This is because with C3 and C6 on Auto or Enabled, the idling voltage or light loading voltage will go lower than it otherwise would with C3 and C6 disabled. The difference is small, but it's just enough that most people need to disable C3 and C6 when using Offset Mode.

 

With Manual Mode though, it doesn't matter.

 

That's all I can see. I hope this helps!

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) Toshiba P300 3TB (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) Toshiba P300 3TB (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 6
Thread Starter 
Hi TwoCables,

Thanks so much for taking the time to write that up. It's 11pm here but tomorrow afternoon I'm going to change everything just how you said and try it out.

Regarding offset mode and that 0.005v setting - yes like you guessed I just followed some random person's settings online - I had no idea things could vary from one CPU to another!
post #4 of 6
Quote:
Originally Posted by chumgoob View Post

Hi TwoCables,

Thanks so much for taking the time to write that up. It's 11pm here but tomorrow afternoon I'm going to change everything just how you said and try it out.

Regarding offset mode and that 0.005v setting - yes like you guessed I just followed some random person's settings online - I had no idea things could vary from one CPU to another!

 

You're welcome!

 

Yeah, each CPU is cut from a big 'wafer' that's in the shape of a circle, and each one is just a little bit different seemingly due to the location in the wafer the CPU came from. That's as much as I know though.

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) Toshiba P300 3TB (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) Toshiba P300 3TB (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 #5 of 6
Thread Starter 
Hi again,

So I've now changed the BIOS to reflect your suggestions. The new screenshots are at: http://imgur.com/a/6qBeH

I've also run Intel Burn Test (10 times on High) which passed successfully and I've uploaded the temps and stats while the test was running.

How do you think things are looking now? The one thing I ignored was the part about DRAM timings as I wasn't sure what that meant.

Thanks again so much for your help. Once things seem okay I'll go back and re-reading some overclocking guides and try to understand what everything means, but it's great having a clear starting point.
post #6 of 6

You're welcome, but I didn't mean to have you use "Auto" for the core voltage in Manual Mode. The 'Auto' setting for the core voltage should be avoided when overclocking because it usually puts the voltage up much higher than it needs to be. With Manual Mode, you have to put in a voltage. Start with the voltage you want, but you will likely have to put in a voltage setting that's higher than what you want in order to get the actual voltage that powers the CPU to be what you want. The actual voltage is what you see in programs like CPU-Z. The setting in the UEFI isn't what's powering the CPU. So of course, when you're asked what your voltage is, check it with CPU-Z and report what you see in CPU-Z.

 

The DRAM Timings on that 'page' in the BIOS are actually already set correctly with the Auto setting. I've noticed that my motherboard does that too. These ASUS boards are great!

 

The DRAM Voltage though might need to be set manually because you want 1.65 but it's putting it to 1.662V which isn't dangerous, but just unnecessarily high. I don't know if the actual voltage will be 1.662V though. Maybe it ends up being closer to 1.65V. You can see the actual voltage in a program called "HWiNFO". When you open it, enable "Sensors Only" and then click OK. Then you might get a sensor warning. Ignore it and click 'Continue.' Then scroll down and look for "DDR" on the left side. Mine is somewhat near the bottom of the list. Kinda.

 

I'm curious, just for fun: when you set Internal PLL Overvoltage to 'Disabled', did you notice any change in your motherboard's POST time?

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) Toshiba P300 3TB (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) Toshiba P300 3TB (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
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