Edited by Epsilon, 12 February 2011 - 08:20 AM.
Posted 12 February 2011 - 10:15 AM
Posted 12 February 2011 - 03:58 PM
Posted 12 February 2011 - 10:32 PM
VTT: Voltage rail that feeds the integrated memory controller (on CPUs that have this component), the QPI bus (on CPUs that have this component), the FBS termination (on CPUs that are based on this architecture), the L3 memory cache (on CPUs that have this feature), the thermal control bus (PECI, Platform Environmental Control Interface, on CPUs that have this feature) and other circuits, depending on the CPU. It is important to understand that on AMD CPUs “VTT” is the name of a different voltage; the VTT on Intel CPUs is the equivalent of the VDDNB from AMD CPUs. This voltage can be changed through options like “CPU VTT”, “CPU FSB”, “IMC Voltage” and “QPI/VTT Voltage”.
So in other words, if you're processor is an Intel, VTT and IMC are the same voltage, if you got the VTT off of an AMD processor that means something different
Edited by Log2, 12 February 2011 - 10:33 PM.
Posted 13 February 2011 - 07:37 AM
On an AMD CPU,
VTT: Voltage that is used to feed the termination logic inside the memory chips. By default it is set as half of VDDIO. Pay attention because Intel CPUs has a voltage called VTT that has a different meaning/usage.
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