What's an acceptable vcore drop while cpu is under full load? Mine dropped a full 0.05 v at 1.6v ->1.55v. Q6600 @2.8ghz, 67 degrees C, Gigabyte Ex38-DS4 board. I'm fine with motherboard dropping vcore to maintain stability, but 0.05v seems a bit excessive.

Is this bad? Are there any ways to influence vcore drop?

damm!!!u dont need 1.6V for bloody 2.8Ghz!!!!vdroop is nothing to worry about!just let it be!just turn down your vcore!!!only up it by 1 notch!

Dude, while I am not an expert on the Q6600, mine was hard to OC.. but I would not run 1.6v though it no matter what.....

I got mine stable at 3.2ghz at 1.35v and my lowest voltage per CPUZ was 1.280 under full load.

Ah, my mistake, I meant to say 3.8ghz. This cpu got a bum core that fails prime95 immediately at 3.8 unless vcore is upped to 1.6

Anyway, that was test config, I've since toned it down to 3.6ghz on 1.5v (1.45v full load). So does anyone know how to decrease the drop, or know if a drop that big is healthy? While at it, what can I do to get that bum core moving? Without burning the other cores, hopefully.

you can find out how 2 eliminate vdroop according to your motherboard model.

Thanks for the suggestion. I looked up new bios for the Gigabyte board and apparently it supports loadline caliberation. Woohoo! Thought only more expensive brands support those. So yeah, it reduced the vcore drop to around 0.025, which should be about just right. Enough headroom for spikes but not too excessive.