While we could conceivably add a comment about ECC support, I think we're about 48 hours from saying "if you buy AMD do not come to this forum for support". AMD thing is getting ugly on future builds of FreeNAS and FreeBSD.. It looks like FreeBSD may be "AMD-incompatible". :/
While there's a glimmer of hope for AMD with ECC, it's not going to make a darn bit of good if you can't even boot the OS without it crashing. ;)
You should make a note that AMD as a 'big' vendor really does not care much about *BSD, not even *NIX systems. Their main track is Micro$oft support. Just as it is Intel's.
Does Intel care something more? No, they just happen to have some better support for a wide range of systems, and once again, how come that such well known and de-facto standard X86 architecture directly impacts software level in a correlation with specific vendor? I doubt.
Today, business are running even on RISC arhitecture (ARM etc).
We're running GNU Linux on IA-64 architecture at work. And we all know how bad IA-64 is for anything but HP-UX.
Personally, I've never had issues with AMD (both prosumer - privately and server grade hardware - as an observer at work place).
Personally, I've had a LOTS of unexplained troubles both with "server grade" Intel (SM) platform and Free/BSD-NAS.
And in the latter scenario even everything should be working excellent out of the box - so not true, I even had to hack BIOS settings in order to boot FreeNAS every time (xHCI).
But here we're not to talk about personal impressions or love/hate stuff, but as a professionals with proven facts.
So, what can get you into trouble with any vendor MIGHT be - the chipset (south bridge since NB is integrated). We've seen Intel boards with bad chipsets (SiS), and we've seen AMD boards with bad chips (SiS, VIA). These days both Intel and AMD as well as MoBo manufactures are smart to use the proven reference design (Intel CPU/NB, and Intel SB; same thing goes for AMD platforms).
if you buy AMD do not come to this forum for support
NHF, Well, your personal impression has nothing to do with a free speech and forum rules governed by the owners of the website/forum (sorry if you are one of the owners, still nothing changes previous statement).
Have you considered perhaps there might be other forum members willing and able to help with AMD builds and share their experience? I guess not. :)