site admins make this post stickey where ever it belongs if u find it useful...im hoping to post a lot of articles like these in the future
Asus P5k AKA P5K Vanilla is one of the most affordable and feature rich motherboards that u can buy in Sl these days...u can buy it for arround 20K RS. this board have all the features you have to OC ur new Core 2...If you own one of these boards and overclocked u might have noticed a problem with this board...it have a massive Vdroop...ok let me frist tell u what Vdroop is, Vdroop is phenomenon that is inherent to all Intel chipsets...it is mechanism that Reduce the Core Cpu voltage when the CPU is on heavy load to reduce the Heat...but this can be very annoying to overclockers because overclocking involves increasing the CPU core voltage to stabilize the CPU after increasing the CPU core clock...ok let me give u an example
say you have a Intel Core2 E6420 default clock is 2.13 GHZ and Default Voltage for this chip is 1.25V this is the Vcore that u have set in the Bios...but when u put ur CPU on the load Vdroop kickes in and reduce ur Vcore below 1.25 V when this happens ur PC becomes unstable and it might even turn itself off....at default clocks on P5k i have to set the bios Vcore to 1.28 to achive 1.25 on load that is a .03 Vdroop that is massive
so the vdroop is the difference between the Core voltage u set inside bios and the actual vcore that u read when u have ur CPU under 100% load..u can read the realtime voltage change in the CPU using CPU-Z found here http://www.cpuid.com/download/cpu-z-143.zip
and the real problem occur when u actually overclock ur CPU...when u overclock u need to increase the CPU voltage...more voltage means more heat...and with Vdroop u need to have even more Voltage to compensate with the voltage drop when the CPU is under load...lets say u need 1.3 V on load @ 3.2 GHZ on a E6420..u actually need to set the voltage to 1.3 + 0.03 on bios..this voltage will be active when the Processor is idle and that is not good (generates more heat when the CPU is Idle)....
ok lets see how u can fix this problem....the Vdroop is controlled by a surface mount Resistor on P5K, this is not a Variable Resister, what we need to do is to Decrease the Resisteance of this Resister u can see where this resister located on this image
Remember to Cut the power to ur MOBO before doing this mod
All you have to do is to find a 2B Pencil and shade the Resister from one Solder point to the other about 5-7 times....just be gentle when doin this..dont put much pressure on the resister. what pencil led does is it make a bridge to pass current..thus reducing the Resistancy of the surface mount resister....thus decreasing the Vdroop..if u do this right u can bring the vdroop to 0 volts...i hope this helps guys...experiment with the shading process...dont over do it..if u have a Multi meter it will help a lot....
Remember this Mod is not for Novice users...im not responsible for any damge u might do to ur board doing this mod.
Asus P5k AKA P5K Vanilla is one of the most affordable and feature rich motherboards that u can buy in Sl these days...u can buy it for arround 20K RS. this board have all the features you have to OC ur new Core 2...If you own one of these boards and overclocked u might have noticed a problem with this board...it have a massive Vdroop...ok let me frist tell u what Vdroop is, Vdroop is phenomenon that is inherent to all Intel chipsets...it is mechanism that Reduce the Core Cpu voltage when the CPU is on heavy load to reduce the Heat...but this can be very annoying to overclockers because overclocking involves increasing the CPU core voltage to stabilize the CPU after increasing the CPU core clock...ok let me give u an example
say you have a Intel Core2 E6420 default clock is 2.13 GHZ and Default Voltage for this chip is 1.25V this is the Vcore that u have set in the Bios...but when u put ur CPU on the load Vdroop kickes in and reduce ur Vcore below 1.25 V when this happens ur PC becomes unstable and it might even turn itself off....at default clocks on P5k i have to set the bios Vcore to 1.28 to achive 1.25 on load that is a .03 Vdroop that is massive
so the vdroop is the difference between the Core voltage u set inside bios and the actual vcore that u read when u have ur CPU under 100% load..u can read the realtime voltage change in the CPU using CPU-Z found here http://www.cpuid.com/download/cpu-z-143.zip
and the real problem occur when u actually overclock ur CPU...when u overclock u need to increase the CPU voltage...more voltage means more heat...and with Vdroop u need to have even more Voltage to compensate with the voltage drop when the CPU is under load...lets say u need 1.3 V on load @ 3.2 GHZ on a E6420..u actually need to set the voltage to 1.3 + 0.03 on bios..this voltage will be active when the Processor is idle and that is not good (generates more heat when the CPU is Idle)....
ok lets see how u can fix this problem....the Vdroop is controlled by a surface mount Resistor on P5K, this is not a Variable Resister, what we need to do is to Decrease the Resisteance of this Resister u can see where this resister located on this image
Remember to Cut the power to ur MOBO before doing this mod
All you have to do is to find a 2B Pencil and shade the Resister from one Solder point to the other about 5-7 times....just be gentle when doin this..dont put much pressure on the resister. what pencil led does is it make a bridge to pass current..thus reducing the Resistancy of the surface mount resister....thus decreasing the Vdroop..if u do this right u can bring the vdroop to 0 volts...i hope this helps guys...experiment with the shading process...dont over do it..if u have a Multi meter it will help a lot....
Remember this Mod is not for Novice users...im not responsible for any damge u might do to ur board doing this mod.
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