OWC RAM / High Performance / 2x 8GB 1333MHz DDR3 ECC / SDRAM 240 Pin / Mac Pro
2x 8GB OWC RAM Modules
PC3-10600
DDR3-1333 ECC SDRAM
4 x 8GB PC10600 DDR3 ECC 1333MHz DIMMs for
Mac Pro 2009-2012 'Nehalem' & 'Westmere
’
Models
Mac Pro 4,1 and 5,1 Models
These cost $36 from OWC new for a pair of 8GB modules
_gsrx_vers_1516 (GS 9.3 (1516))