An EVGA P55 Motherboard, pretty Focused at Overclockin:
Only 12 phase for VCore 300 to 1,100KHz.
Dual Clock Generators, one right beside CPU, one below PCIE, Specialists.
LGA775 mounting holes rotated slightly at 1degree, together with S1156 holes and socket in normal position
F1 EE nice mount
LICC (Low Inductance Ceramic Capacitors) used in socket cavity, same as ones used on intel cpus/chipsets, notice polar ends compared to typical MLCC
PCIE Slot Disable Jumpers, which I find useful, this time cutting off Powergd signals to VGA Vregs for no VGA heat,
so get your single card runs done first with second card's pot empty the whole time.
Good old ECP support