trying to add 2 x 4GB Crucial DDR3 1333Mhz to existing Elpida 2 x 2 GB DDR3 1333Mhz on iMAC 27" mid 2011
trying to add 2 x 4GB Crucial DDR3 1333Mhz PC3 10600 to existing Elpida 2 x 2 GB DDR3 1333Mhz PC3 10600 on iMAC 27" mid 2011. Get 3 beeps from iMAC and wont run when all memory slots full. Runs ok with new memory only or old memory but not both together. I thought I could do this according to Support page
'Maximum memory16 GB Note: For the iMac (Late 2009) models, you can use 2 GB or 4 GB RAM SO-DIMMs of 1066 MHz DDR3 SDRAM in each slot. For the iMac (Mid 2010) and iMac (Mid 2011) models, use 2 GB or 4 GB RAM SO-DIMMs of 1333 MHz DDR3 SDRAM in each slot.'
iMac, OS X Mavericks (10.9.4)
