I've been running Windows Home Server V1 (Server 2003) and WHS 2011 (Server 2008 R2) on AMD for several years.
I use ECC RAM and low-power 45w CPUs since they are basically file and backup servers. Everything has been and continues to be working fine.
Our TV handles Netflix, Amazon, and others on its own.
Our Windows 7 HTPC was basically a DVR. But since Comcast encrypted all channels and since we don't watch much broadcast/cable TV anymore, it gets very little use. Yeah, I could buy and install a Cablecard tuner, but what's the point...
Newegg has the SAMSUNG D3 Station 4TB USB 3.0 external drive for $129.00, and promo code EMCPBWB225 gives you another $10 off. It has a three-year warranty.
Plus free shipping.
Ends on 8/19.