HTPC will this work with HD content?

Hey guys,
i have an old C2D atx computer in my living room and i want to get rid of that power inefficient huge thing and i was looking for a small ITX form factor based HTPC. It will just be used for playing/streaming HD content (720p, 1080p, not 1080i) from my nas.
I chose an AMD Fusion build with this mobo/cpu
Integrated AMD Dual-Core Processor E-350 with AMD Radeon™ HD 6310 Graphics:
Asus E35M1-i
Will this low power system be able to do that without problems? .mkv's up to 25Gb?
My other option was a more powerful FM1 cpu/mobo..
Feel free to post suggestions, tips, ...
Thanks in advance.