3770k bus speed dropping under high power plan?

[Sasso]

hey everyone,

think i'm posting this in the appropriate area.

I've gotten a strange problem, my ssd failed this weekend so i;ve done a fresh install on my secondary ssd. now th installation went off with no problems but when trying to do some final tweeks i've noticed an add issue...

if i have the power plan under windows set to balanced, then the cpu multi goes between 45x and 16x as expected as i have speed step enabled. if i then change to the high power plan and select the minimum processor state to 5%, like the balanced plan, then the multi steps....but also the bus speed drops below 100, e.g. 85, 66, 75. now i am 99.99999999% positive that it never used to do this prior to the new install.

some specs:
running i7 3770k @4.5 under a H80
asus z77 sabertooth
gtx680x2
16dg ddr3 1600 vengenance ram

the only things i know o have touched were the boot options as i was trying to see if i could fix the boot sector.

anyone had any issues like this before or know what it could be? could it just me a mis reading and it's just cpu-z being funny? i'm pretty sure with these generations you don;t want the bus speed going up and down to those extremes as isn't eveything linked to ir? cpu ram pci-e usb.... etc...etc...

so any ideas?

 

[Sasso]

ok just installed a newer cpu-z and realtemp and both don;t show any drop in bus speed... old cpu-z being silly? quite possibly!

following that, it seems to be allot less willing to throttle under the high performance than balanced. granted this is to be some what expected... but under balanced it will actually sit at the lower frequencies, where as on high, it only flicks down to them for a few secs before jumping straight back up to 45x. almost as if it doesn;t want to save power xD so following up question.... is there an real difference between balanced and high performance bar the presets in the plan? i.e. if i run balanced and set the same options as high perf (e.g. no HDD sleep, no PC sleep, turn off power management of wifi (got none), pci-e link...etc.etc...) i shouldn't see any difference in performance right? oir are there more "behind the scenes" things that the power options take care of?

just seems that balanced speed steps nicely, where as high performance has a grudge against going any lower for more than a few seconds even when doing nothing xD