cpu/ddr2 vtt ?

[Raptorfury]

what exactly is this voltage setting ? i normally keep mine @ 1.5 volts . what is its sole purpose . the ddr2 vtt is left @ auto what is this purpose as well . the adjust on cpu vtt i can go from 1.2 - 1.6 . the ddr2 vtt it has incraments of 0.10 + and -

[Goliath182]

You can add volts (power) to your RAM to achieve higher over clocks.

[Kougar]

VTT has to do with termination voltages... changing them affects electrical "noise", and can easily help or hurt your overclocking. They can also kill your parts if you don't know what settings to be using, so be careful before you change them. ;)

http://xtreview.com/addcomment-id-4952-view-Intel-VTT-voltage.html

You can find the above chart directly from Intel PDFs for their processor models. Make sure you find the chart for your specific processor series, they change with every decrease in process size eg 65nm vs 45nm, etc.

[Raptorfury]

thanx kougar :) i set mine to 1.3 ( better check this to make sure ) i been tring to finger this out for ever and google sends me everywhere but what i wanted to know ...

[trueg50]

I would play with it a bit.

I know on my old 680i chipset P5N32-E, it should be set to 1.5, yet it does not effect temps or anything.

Though I did hear that Anandtech, or Toms hardware fried one of their 45nm quad

[Kougar]

Yeah, you are correct. Anandtech ran one of their QX9650 45nm chips with a 1.51VTT and killed it outright in under 24 hours. They also have a Q9300 that they only briefly used a 1.50 VTT on, but now it is going out on them due to the same issue.

There are quite a few VTT settings, VTT for CPU, VTT for the MCH, etc etc.