Would it be feasible to replace the CPU in this MacPro with a 6-core?
Refurbished Mac Pro 2.8GHz Quad-Core Intel Xeon
Originally released August 2010
One 2.8GHz Quad-Core Intel Xeon "Nehalem" processor
3GB (3 x 1GB) of 1066MHz DDR3 ECC memory
1TB Serial ATA 7200 rpm
18x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
ATI Radeon HD 5770 with 1GB GDDR5 memory
Refurbished Mac Pro 2.8GHz Quad-Core Intel Xeon
Originally released August 2010
One 2.8GHz Quad-Core Intel Xeon "Nehalem" processor
3GB (3 x 1GB) of 1066MHz DDR3 ECC memory
1TB Serial ATA 7200 rpm
18x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
ATI Radeon HD 5770 with 1GB GDDR5 memory