ECS A970M-A Deluxe Motherboard Review @ OCC
 

Overclocking with the ECS A970M-A is a simple affair. I would mention that without a few features of it's more expensive 990FX chipset boards, overclocking did require more voltage than it otherwise might. The impressive overclock of 4789MHz did also create quite a bit of heat requiring a heartier cooling solution than you will be able to find in the 35-40$ range. While the A970M-A achieved a very good OC, heavy 24/7 overclockers will probably opt for the added features of the 990FX chipset.

http://www.overclockersclub.com/reviews/ecs_a970ma/