Vcore fluctuating at idle.......

[ge_generation]

I've recently started to overclock my e5200 (rev. r0, if it is important) which I have at 3.5GHz (333x10.5). I've set the Vcore at BIOS at 1.3375V, and CPU-z records that the cpu gets 1.312V. Now the kicker is even when its at idle (maybe like 2-3% load). the Vcore fluctuates on CPU-z between 1.296-1.312.

Is this a common problem, and if so, is it a BIOS Setting, PSU problem, etc.?

P.S. I have a 550W PSU, but non-brand. NVIDIA 9800GT, 2GB corsair xms2 ram, wireless card and a scsi controller(I happened to come across a scsi hard drive :D)

[CrashG]

I've had the same happen on both my E6550 and E8200 (both OC'd). Since I was also undervolting both of them, I just bumped the vcore up one more in the BIOS, now they don't fluctuate at idle or under load.

I wouldn't worry about it unless your OC is unstable.

[TokiToki]

This is actually normal. Some BIOS's have a setting called Load Line Calibration, which if Enabled usually stabilizes the voltage, but you run the risk of voltage spikes beyond specs. You will want to google Vdroop, Vdrop, and Load Line Calibration to learn more.

[Rob2687]

http://www.anandtech.com/cpuchipsets/intel...?i=3184&p=5

[ge_generation]

K thanks guys! I'll just up my voltage then :D