Don't use the 1003 IMO bcause I just tried and I lost my raid controller screen and it was saying hard drive in the boot order screen instead of the raid I have and I couldn't boot. I went back to 1102 now and I am fine again on my 3.8GHz. Here are my voltage settings.

CPU Voltage: 1.26250
CPU GTL Voltage Reference (0/2): .635
CPU GTL Voltage Reference (1/3): .635
CPU PLL Voltage: 1.56
FSB Termination Voltage: 1.32
DRAM Voltage: 2.02
NB Voltage: 1.28
NB GTL Reference: auto
SBridge Voltage: 1.20
PCIE SATA Voltage: 1.60