Howdy all, I wanted to comment so bad on this topic that I became a registered user just to do so.
I selected my computer hardware around my DAW's (Cakewalk - Sonar X1 "by ROLAND") suggested hardware requirements and chose an intel i7 "Sandy bridge" 2670qm equiped laptop. Cakewalk states that they "worked closely with intel" and built their newest SONAR X1 to perform at it's best with a Hyper-threaded Intel i7 with "8" to "12" threads.
(Cakewalk also got invited to the 2012 Intel NAB show to do a presentation on an Ultrabook using an i7 and it was mind blowing!) Studio Quality Sound on an Ultrabook™ Device with Cakewalk | Intel Software Adrenaline
I chose a laptop over a desktop for portability and also for the simple fact that cakewalk states on their site that they used i7 "sandy bridge" laptop workstations for their overseas NAMM type shows and that the laptops handled everything perfectly and with only a 1.5 millisecond latency. (The idea of powerful portability impressed me... that, and I can connect a large external monitor if needed). They also deisigned the software to utilize the processors threads in the best possible way which also conserves a "little" energy.
I've used every sonar from 5 to X1 and have never questioned or second guessed performance after building my machines around my DAW's suggested hardware. By doing this, I have always enjoyed just making music instead of dealing with performance issues or always wondering if I'm not getting the best out of my software. I guess what I'm getting at is, if you have a favorite DAW, look at the suggested hardware and shoot for that, whether it's AMD or Intel.
Just to give an idea of my normal workload, I now have a current project with the following going on at the same time with no bouncing or freezing going on....all real time; 1 EZdrummer track, 4 Guitar Rig5 tracks going, 7 "huge" synth tracks of Omnisphere running, 1 vocal with effects plugin, FL Studio running through REWIRE into 1 track, 6 compressor plugins and 11 eq plugins all at the same time at 1.5 ms latency without any problems or dropout and I'm still adding more! I like the fact that I can edit, tweak settings or swap plugins durring playback without poping or crashing for that matter... That, and the 8 CPU meter bars barely show usage! It works great with the hardware they suggested! And the best part..., the ability to do this on the road with 4 hours of battery if needed! Too bad my KRK's are to big to carry
One last thing, and this is only my thoughts.... AMD makes some nice fast chips at great prices but in the big, money making, "hardware Hassle free" audio and video industry...Intel is the standard for one major reason...because their higher end processors performance, power and reliability is untouchable! However, there are plenty of AMD CPU's that can get the job done for a lot of people's needs at a fraction of the price and if your on a budget it is the way to go....I just chose to save my $$'s and not take any chances