- Joined
- Sep 18, 2007
FD's OC Guide
Hello,
I wrote this article to help new users to OC their CPU. Let's Start...
OC Requirements:
-Hardware:
-An Intel Core 2 Family CPU
-A Motherboard with good OC and OV ability.
-RAM(s) with good OC potential.
-And of course a good CPU Cooler.
-Software:
-We need an application to monitor the CPU temperature In Windows. For example you can use Fan Speed to do it.
-Also we need an application to put our CPU in Full-Load condition to test system stability and check its temperature I recommend using CPU Burn-in.
-Using CPU-Z application for checking other settings is good.
Step 1: (Initial)
First of all check you CPU temperature in ideal, and then check it on Full-Load condition. (For doing this, you should run CPU Burn-in test for 15 Minutes. if you use an Intel Core 2 Duo open 2 instances of CPU Burn-in and if you use a Core 2 Quad open 4 instances). The maximum temperature for Intel Core 2 Family CPUs should be <=70C.
Step 2: (Let's OC it)
You may use your Motherboard's special OC utility in Windows. Also you can use your Motherboard's BIOS options. (I suggest you to use your Motherboard's BIOS options, however this way is harder and also more advanced than using OC application in Windows).
To enter BIOS, restart your computer and press <Del.>. Enter password (if there’s one) and try to find something like <Extreme Tweaker> (for ASUS Motherboards) or <M.I.T> (For Gigabyte Motherboards). If you are using a Gigabyte Motherboard and can’t find this item Press Ctrl+F1 to show advanced BIOS options.
More Info. -> Your Motherboard's user's guide.
We will work on these items:
-CPU Clock Ratio or CPU Clock Multiplier.
-CPU Host Freq. or FBB (QDR)*
-System Memory Multiplier or Memory Bus Speed (DDR)
-VCore Voltage.
-VTT Voltage.
*FSB (QDR) = <CPU Host Freq.>*4
Don’t using ASUS or Gigabyte Motherboards -> Your Motherboard's user's guide.
-First Specify the CPU Freq. you want.
-Enable CPU Host Clock Control Option. Remember that:
<CPU Freq.>=<Host Freq.>*<CPU Clock Multiplier>
-You can increase your CPU Clock Ratio if it isn't locked. Only Core 2 Extreme CPUs have an unlocked Multiplier. so if you don't have these CPUs you can increase the Host Freq. instead but remember that expensive Core 2 Extreme CPUs have more OC potential than Core 2 ones because we have some limits on increasing Host Clock Freq. specially in Core 2 Quad CPUs.
-According to the tests you can increase Q6600's Freq. up to 3.3 GHz. without using Liquid Cooling Systems and Core 2 Extreme QXxxxx have more potential for OC than Q6600 as I said.
-According to the tests you can increase E4400's Freq. up to 3.0 GHz. without using Liquid Cooling Systems and Core 2 Extreme Xxxxx have more potential for OC than E4400 as I said.
-Also remember that:
<Memory Bus Speed>=<Host Freq.>*<Memory Clock Multiplier>.
So be careful about your System Memory Multiplier. Remember as you increase the Host Freq. Memory Bus Speed increases too. So if you have a Memory with xxxx Mhz. Bus Speed, try to set the System Memory Multiplier parameter correctly. For example if you have a RAM with 800 Mhz. Bus Speed and the producer guaranties you can increase it up to 1200 Mhz. and your Host Clock Freq. is 600 Mhz. your Memory Multiplier should be 2.00. According to the formula above,
1200 >= 600 * 2.00
-For Intel Core 2 Family CPUs, the default VCore voltage is about 1.350. Higher voltages usually lead to thermal issues and dip the CPU's life time. Most of the Motherboards set the VCore voltage automatically but it's better to set it manually because in some cases Motherboards set the VCore voltage value wrong. To find out the minimum required value according to your CPU Freq. do the following works:
-Set the Host Freq. on the preferred value.
-Set the VCore voltage on 1.25000
-Save changes. And exit BIOS.
-Your computer may reboot while loading Windows but don't worry; it shows that 1.2500 is not enough. Enter BIOS again and increase VCore voltage (Only and only one level). For example increase VCore voltage for 0.0025 and save changes. And exit BIOS. Continue on doing this until you see the Windows Desktop.
-Now open CPU Burn-in (2 instances for Core 2 Duo and 4 instances for Core 2 Quad CPUs). Run the test for 15 Minutes. Again your computer may reboot. Enter BIOS and increase VCore voltage and continue on doing this until CPU Burn-in(s) test finishes without any rebooting. Remember to check temperatures.
-Well done. System Overclocked Successfully.
-To see if your PC is rock stable run CPU Burn-in Test for 1H or more.
-One thing you can do is setting VTT Voltage manually. I think 1.25 is good enough. If you see system instability after setting this voltage leave it on Auto.
Step 3: (Examples)
1.
Motherboard: ASUS Striker Extreme - BIOS Ver. 1004
CPU: Intel Core 2 Quad Q6600
RAM: 2 x Corsair XMS2 1 GB 800 MHz
Cooler: Thermaltake BigTyp VX 120
CPU Clock Multiplier: 9
CPU Host Freq.: 356
System Memory Multiplier: Unlinked (This Motherboard can Unlink Memory Bus Speed and Host Freq.).
Memory Bus Speed: About 950
VCore Voltage: 1.33
VTT Voltage: 1.30
2.
Motherboard: Gigabyte 965P-S3
CPU: Intel Core 2 Duo E6320
RAM: 2 x Corsair XMS2 1 GB 800 MHz
Cooler: Thermaltake BigTyp VX 120
CPU Clock Multiplier: 7
CPU Host Freq.: 460
System Memory Multiplier: 2.00
Memory Bus Speed: 920
VCore Voltage: 1.33
VTT Voltage: Auto
*** YOU MAY NEED TO UPDATE YOUR BIOS FOR BETTER OC ***
*** REMEMBER TO OVERCLOCK YOUR PC AT YOUR OWN RISK. ***
Hello,
I wrote this article to help new users to OC their CPU. Let's Start...
OC Requirements:
-Hardware:
-An Intel Core 2 Family CPU
-A Motherboard with good OC and OV ability.
-RAM(s) with good OC potential.
-And of course a good CPU Cooler.
-Software:
-We need an application to monitor the CPU temperature In Windows. For example you can use Fan Speed to do it.
-Also we need an application to put our CPU in Full-Load condition to test system stability and check its temperature I recommend using CPU Burn-in.
-Using CPU-Z application for checking other settings is good.
Step 1: (Initial)
First of all check you CPU temperature in ideal, and then check it on Full-Load condition. (For doing this, you should run CPU Burn-in test for 15 Minutes. if you use an Intel Core 2 Duo open 2 instances of CPU Burn-in and if you use a Core 2 Quad open 4 instances). The maximum temperature for Intel Core 2 Family CPUs should be <=70C.
Step 2: (Let's OC it)
You may use your Motherboard's special OC utility in Windows. Also you can use your Motherboard's BIOS options. (I suggest you to use your Motherboard's BIOS options, however this way is harder and also more advanced than using OC application in Windows).
To enter BIOS, restart your computer and press <Del.>. Enter password (if there’s one) and try to find something like <Extreme Tweaker> (for ASUS Motherboards) or <M.I.T> (For Gigabyte Motherboards). If you are using a Gigabyte Motherboard and can’t find this item Press Ctrl+F1 to show advanced BIOS options.
More Info. -> Your Motherboard's user's guide.
We will work on these items:
-CPU Clock Ratio or CPU Clock Multiplier.
-CPU Host Freq. or FBB (QDR)*
-System Memory Multiplier or Memory Bus Speed (DDR)
-VCore Voltage.
-VTT Voltage.
*FSB (QDR) = <CPU Host Freq.>*4
Don’t using ASUS or Gigabyte Motherboards -> Your Motherboard's user's guide.
-First Specify the CPU Freq. you want.
-Enable CPU Host Clock Control Option. Remember that:
<CPU Freq.>=<Host Freq.>*<CPU Clock Multiplier>
-You can increase your CPU Clock Ratio if it isn't locked. Only Core 2 Extreme CPUs have an unlocked Multiplier. so if you don't have these CPUs you can increase the Host Freq. instead but remember that expensive Core 2 Extreme CPUs have more OC potential than Core 2 ones because we have some limits on increasing Host Clock Freq. specially in Core 2 Quad CPUs.
-According to the tests you can increase Q6600's Freq. up to 3.3 GHz. without using Liquid Cooling Systems and Core 2 Extreme QXxxxx have more potential for OC than Q6600 as I said.
-According to the tests you can increase E4400's Freq. up to 3.0 GHz. without using Liquid Cooling Systems and Core 2 Extreme Xxxxx have more potential for OC than E4400 as I said.
-Also remember that:
<Memory Bus Speed>=<Host Freq.>*<Memory Clock Multiplier>.
So be careful about your System Memory Multiplier. Remember as you increase the Host Freq. Memory Bus Speed increases too. So if you have a Memory with xxxx Mhz. Bus Speed, try to set the System Memory Multiplier parameter correctly. For example if you have a RAM with 800 Mhz. Bus Speed and the producer guaranties you can increase it up to 1200 Mhz. and your Host Clock Freq. is 600 Mhz. your Memory Multiplier should be 2.00. According to the formula above,
1200 >= 600 * 2.00
-For Intel Core 2 Family CPUs, the default VCore voltage is about 1.350. Higher voltages usually lead to thermal issues and dip the CPU's life time. Most of the Motherboards set the VCore voltage automatically but it's better to set it manually because in some cases Motherboards set the VCore voltage value wrong. To find out the minimum required value according to your CPU Freq. do the following works:
-Set the Host Freq. on the preferred value.
-Set the VCore voltage on 1.25000
-Save changes. And exit BIOS.
-Your computer may reboot while loading Windows but don't worry; it shows that 1.2500 is not enough. Enter BIOS again and increase VCore voltage (Only and only one level). For example increase VCore voltage for 0.0025 and save changes. And exit BIOS. Continue on doing this until you see the Windows Desktop.
-Now open CPU Burn-in (2 instances for Core 2 Duo and 4 instances for Core 2 Quad CPUs). Run the test for 15 Minutes. Again your computer may reboot. Enter BIOS and increase VCore voltage and continue on doing this until CPU Burn-in(s) test finishes without any rebooting. Remember to check temperatures.
-Well done. System Overclocked Successfully.
-To see if your PC is rock stable run CPU Burn-in Test for 1H or more.
-One thing you can do is setting VTT Voltage manually. I think 1.25 is good enough. If you see system instability after setting this voltage leave it on Auto.
Step 3: (Examples)
1.
Motherboard: ASUS Striker Extreme - BIOS Ver. 1004
CPU: Intel Core 2 Quad Q6600
RAM: 2 x Corsair XMS2 1 GB 800 MHz
Cooler: Thermaltake BigTyp VX 120
CPU Clock Multiplier: 9
CPU Host Freq.: 356
System Memory Multiplier: Unlinked (This Motherboard can Unlink Memory Bus Speed and Host Freq.).
Memory Bus Speed: About 950
VCore Voltage: 1.33
VTT Voltage: 1.30
2.
Motherboard: Gigabyte 965P-S3
CPU: Intel Core 2 Duo E6320
RAM: 2 x Corsair XMS2 1 GB 800 MHz
Cooler: Thermaltake BigTyp VX 120
CPU Clock Multiplier: 7
CPU Host Freq.: 460
System Memory Multiplier: 2.00
Memory Bus Speed: 920
VCore Voltage: 1.33
VTT Voltage: Auto
*** YOU MAY NEED TO UPDATE YOUR BIOS FOR BETTER OC ***
*** REMEMBER TO OVERCLOCK YOUR PC AT YOUR OWN RISK. ***
