Hello guys,
I've already posted this question on Asus forums and a few other o.c. forums without any real response.
Heres my setup:
ASUS M3A78-EM or M4A78-PLUS
X4 9850
4GB Corsair @ 333mhz
Sapphire 4890 Vapor-X
OCZ 600watt supply
Temps are around 38-40 idle, 50-52 load. Default vcore is 1.2500 on M3A78-Em and 1.3000 on M4A78-PLUS (don't ask me why the default voltage for the same CPU is different on boards from the same manufacturer).
If I raise the FSB/Vcore and create a load (either via AOD or Prime95) after a few seconds, my cpu voltage/multiplier drops and consequently so does my clock speed. The multiplier is divided by two, and the voltage is brought down to 1.000 - 1.005. This happens for a few seconds, and then default settings are brought back and the stress test continues.
The drops in voltage occur more frequently depending on how high I raise the voltage (more drops the higher I go). My board allows me to give max 1.4500 I think.
On ASUS forums, I read some people's complaints blaming the problem on ASUS. Although they seemed to all have the same generation CPU. Could this be ASUS wanting to support a laundry lists of CPUs but cutting back as soon as the CPU draws too much power?
Anyone see this before? Any work arounds or volt mods? Can anything be done to the board physically to stop this from occurring except whipping it out a window?
Oh and any power saving features have been turned off. This problem only occurs under load.
Any help is appreciated.
I've already posted this question on Asus forums and a few other o.c. forums without any real response.
Heres my setup:
ASUS M3A78-EM or M4A78-PLUS
X4 9850
4GB Corsair @ 333mhz
Sapphire 4890 Vapor-X
OCZ 600watt supply
Temps are around 38-40 idle, 50-52 load. Default vcore is 1.2500 on M3A78-Em and 1.3000 on M4A78-PLUS (don't ask me why the default voltage for the same CPU is different on boards from the same manufacturer).
If I raise the FSB/Vcore and create a load (either via AOD or Prime95) after a few seconds, my cpu voltage/multiplier drops and consequently so does my clock speed. The multiplier is divided by two, and the voltage is brought down to 1.000 - 1.005. This happens for a few seconds, and then default settings are brought back and the stress test continues.
The drops in voltage occur more frequently depending on how high I raise the voltage (more drops the higher I go). My board allows me to give max 1.4500 I think.
On ASUS forums, I read some people's complaints blaming the problem on ASUS. Although they seemed to all have the same generation CPU. Could this be ASUS wanting to support a laundry lists of CPUs but cutting back as soon as the CPU draws too much power?
Anyone see this before? Any work arounds or volt mods? Can anything be done to the board physically to stop this from occurring except whipping it out a window?
Oh and any power saving features have been turned off. This problem only occurs under load.
Any help is appreciated.
