That's right. The GT version is designed for the 6 core Gulftown CPUs. Internally, these new CPUs are organized as 2 x 3 core CPUs. When you run RealTemp GT on a Quad, it will only show you the first 3 cores. I could probably fix this but the regular version of RealTemp should be used if you have a Dual or Quad core so I left RealTemp GT as is to encourage users to use the regular version.

RealTemp GT will also sort of work on the dual Quad Gainestown systems but at the moment it will only report the first 3 cores of each CPU.