Hello, everyone! I've been wanting to (more of needing to) upgrade my 4.1 quad core 2.66 ghz Mac pro. I have 32 gb's of ram for it, and a gtx 670 FTW edition GPU. All I need now is to upgrade the CPU (opposed to buying an entirely new computer) I've been looking at this CPU here -- http://www.superbiiz.com/detail.php...lG1H1J8Fz0dGYF8HYZ9iQtm7NncaE8i14waAt4b8P8HAQ But then I realized, what's supported/been tested to work for the 4.1? That CPU is a 6-core, and I know that there is a firmware somewhere where it recognizes the 4.1 as a 5.1, so that it could allow 6 core CPUs in the early 2009 edition. But, I would like to know which CPUs have been tested and have worked as an upgrade for the 4.1 Early 2009 Mac pro. I'm not looking to spend over $1000, but I am looking for a good upgrade that will for sure work. Thanks in advance!