AMD totally viable
http://www.cpubenchmark.net/high_end_cpus.html
AMD FX-8350 Eight-Core
Score: 9,139
$179.99
AMD FX-8320 Eight-Core
Score: 8,181
$153.61
(the processor in OP:)
Intel Core i3-3225 @ 3.30GHz
Score: 4,379
$130.94
As I said, twice the computing power for just a bit more, but now taking a closer look with AMD it's an even better deal than going the i5 route. These aren't hyperthreaded either, so a definite plus.