Did 2 runs on fresh Win 7 64bit RC install I did last night. Only change was CPU VTT voltage needed to pass Hyper Pi 8x 32M vs 4x 32M.

  1. 8x 32M Hyper Pi HT Enabled - CPU VTT = 1.44v
  2. 4x 32M Hyper Pi HT Disabled - CPU VTT = 1.47v needed more for 4x32M HT Disabled


RTL value for channel A changed when CPU VTT changed from 1.44v to 1.47v

RTL A/B/C = 56/57/58


RTL A/B/C = 55/57/58


Past bioses and tests, I found memory bandwidth in memtest86+ v2.11 was higher with HT disabled than HT enabled, so could explain why more CPU VTT volts is needed for HT disabled.

4//28 looking sweet indeed 8x 32M Super Pi instance via HyperPi @DDR3-2080Mhz 7-8-7-20 1T at 1.725v bios set vdimm = 1.730v real DMM vdimm.