Mobo brand variations in voltage for identical CPUs
Mobo brand variations in voltage for identical CPUs
I observe two 3570k processors on different motherboards. Both clocks are set to 4.2GHz with a slight -0.02 voltage offset. However, I've noticed significant differences in their readings. The ASRock board shows core voltages ranging from 0.816V to 1.072V, while the Asus board displays values between 1.016V and 1.224V. The idle and load measurements also vary widely across both systems. The Asus readings consistently appear higher than the ASRock ones. It seems the Asus board might be generating more voltage than the ASRock, or perhaps the CPU on the Asus side needs more power to operate under the same conditions. I'm curious if this reflects a design choice by Asus or a requirement for better performance.
The Asus board features 4+2 VRM compared to the AsRock 4+1, with slight variations in voltage measurements. It seems Asus might be delivering higher voltage levels, though both CPUs appear functional. Stability and temperature checks would be valuable next steps. It would be useful to compare which board consumes the least power during overclocking. Great insights!
I experimented with adjusting the voltage levels a bit more. Successfully getting the ASRock board to run at 4.5GHz with a slight +0.08V offset brought stability for around ten minutes in Prime 95. The same configuration on the Asus board led to a crash and hang during the Windows welcome screen, so I stopped testing further. Clearly, higher voltage isn’t worth the added clock speed. It seems the CPU on the Asus board is simply inferior compared to others. Still, it doesn’t fully clarify why the boards display such different stock voltages, especially if the BIOS readings are accurate.