Ok, tks.
Will start OCing on Sunday/Monday, i'm getting my WC setup up and running this weekend.

eva, thanks so much for this thread! My i7 920 and DFI board (with the latest beta BIOS) have been screaming since I followed some of the stuff in here. I have the 6GB Kingston DDR3 2000MHz kit and it runs perfectly at 2008MHz 8-8-8-20-1T. Just needed to bump the VTT volts up a bit!

So I am running at 4GHz with 1.36v, RAM at 2008MHz with 1.64v, and to keep the QPI stable at that speed, I set that to 1.52v. That's the lowest stable I could get on the VTT voltage.

Again, many thanks!

alright MR DFI, can you help explain what the hell is going on. i just started actually testing one of my 965s with Prime and happened to have a CPU-Z window open. at 3.8GHz 1.280v i get nothing over 65C in Realtemp...everything seemed normal. i jumped up to 3.9GHz (144x27) with 1.325v and all of a sudden, the CPU multi is dropping to 26X and even 25X once in a while.

i have thermal control off, everything in CPU control but EIST on so i can run higher multi. at idle it is a solid 27X. if i drop voltage to 1.30v temps stay around 65C in Realtemp and the multi seems to stick at 27X, but going up in voltage it starts to flop around. any ideas? i am assuming throttling but at those temps it isn't the CPU...it's got to be the motherboard.

TDC/TDP & TM Protection (Turbo mode effects): In CPU Feature section of bios the Set VR Current Limit Max and Thermal Management Control options control TDC/TDP and other temperature related throttling for Core i7 cpu.

• TDC = over current protection which default Vcore OCP max is 140A (for CPU PWM IC). At >70A, TDC is tripped, it will disable Turbo mode - thus you may see your cpu multiplier drop by 1x or 2x.
• TDP = thermal design power according to DFI is tripped at around >80W which will also disable Turbo mode
• Set VR Current Limit Max = Enable to disable both TDC and TDP protection functions thus allowing Turbo mode to run without any TDC/TDP protection.
• Thermal Management Control = Tripped when core temp is >90C, Turbo mode will disable. At >105C core temp, will force system shutdown.
• Only when 965 cpu is installed are 2 additional options for TDC/TDP displayed for TDC Enable: x TDC Limit: and TDP Enable: Disabled x TDP Limit: 0

is this with Vista or XP ? Vista make sure power management is set to high performance otherwise if left at default setting for power management, under load Turbo multiplier set will drop by 1x

also from tip #2 at here

So do you have Set VR Current Limit Max = Enable or Disabled ?

Vista X64, power management set to high performance already.

it was disabled, but with the 965 you get the other two options visable which were disabled. i have enabled VR Current and just started Prime95 again. we'll see if that helps.

temps are at 68C in Realtemp again and so far no fluttering. hmmm, i would have thought having both TDC and TDP options disabled would have prevented it from happening regardless of what VR Current was set to.

and that is why you are called Mr. DFI...thanks bud, it was driving me nuts

Hi, and thanks for this thread.
Please excuse my bad english.

I have a T3eH8 too, but my i920 (batch 3838B079) don´t likes any CPU/VTT. If i raise this Voltage up to 1,26 i become restarts after a few minutes of Prime equal which V-Core or ..... Have you ever heard from those problems?