Good motherboards should have good VRM's, 6+2 power phases up to 12+2, overheat protection, extensive and easy to use bios controls. With adequate cooling the CPU should reach 4.8 to 5.0GHz or better
ASROCK
Fatal1ty 990FX Professional
990FX Extreme9
ASUS
M5A99FX PRO R2
SABERTOOTH 990FX R2.0
CROSSHAIR V FORMULA
CROSSHAIR V FORMULA Z
Competent motherboards should also have good VRM's, 6+2 power phases or better, overheat protection, extensive and easy to use bios controls. With adequate cooling the CPU should reach 4.5 to 4.8GHz or better
ASROCK
990FX Extreme4
ASUS
M5A97 EVO R2
M5A99X EVO R2
Motherboards to avoid are likely to have 4+1 phase power, underdesigned VRM spec, or they lack essential bios controls. With adequate cooling the CPU may reach 4.2GHz but could also throttle at under 4.0GHz with load.
ASROCK
990FX Extreme3
All 970 chipset models
ASUS
M5A97 LE R2
M5A97 R2
Source:
http://forums.overclockers.co.uk/showthread.php?t=18544198