just for video editing i think that is a poor choice.
there are 2 ways to encode, software or with hardware acceleration. software does have the best quality though you might be hard pressed to tell the difference between it and a hardware accelerated encoding. if you want to use hardware acceleration, intels quicksync is by far the fastest way to do it and has the best quality.
if you want to do a software encoding with the cpu, the amd-a series is a terrible choice.