Found this in the shop review section for this ram, seems this user had issues with 2 different sets of this ram and the voltage required to run them, seems there was an older version that required more volts to run at 1066mhz, similair to the op's spd screenshots.
"quote"
Reviewed by: Cew27
i purchased 4 gig of these sticks two weeks apart, the best ram i have used thats for sure and go perfectly with any nforce mobo
when i ordered my second set they were the new revision that run at lower voltages and they were not compatible with the old pair so i ran up over clockers and they set me up with a set of the new modules
thanks adam!
"quote"
Reviewed by: Cew27
i purchased 4 gig of these sticks two weeks apart, the best ram i have used thats for sure and go perfectly with any nforce mobo
when i ordered my second set they were the new revision that run at lower voltages and they were not compatible with the old pair so i ran up over clockers and they set me up with a set of the new modules
thanks adam!