Maybe so but I still require a gpu for the other things I'll be doing on it.
And intel is pretty much the only option if you want a high end cpu. The Phenom IIs are great (had one until 2 weeks ago), but until bulldozer arrives AMD wont have a cpu that can compete with the 2500k/2600k.
Back on topic, I've done some more reading and I think I might go with the x2 555. Any objections? Would the x4 640 be a better option for $5 more?
I admit that I haven't been keeping up to date on current tech, but even if Intel CPU's wipe the floor with AMD, I'll never buy another Intel CPU. However, this is your rig, and not mine, so if you want Intel, go for it.
For a server, the more cores, the better AFAIK. Especially if you want to multi-task.