Buying RAM. How many pins?

[mkrndll]

Hi,

I'm trying to buy more RAM for my 2011 iMac (the new one), but I don't know exactly what I have to get.

Is 4 tablets of 4Gb DDR3 SDRAM 1333Mhz the best I can get for my iMac?

How many pins does it have to be?

Should I put them all the same or can I keep the 2 2Gb that I have and only buy 2 of 4Gb each or will I have performance issues?


Thanks for your help!

 

[theSeb]

204 pins

The full info is on the Apple website

The iMac (Mid 2011) computers have four SDRAM slots in the bottom of the computer and come with at least 4 GB DDR3 SDRAM installed as two 2GB DIMMs into two slots.

The maximum amount of RAM you can install in your computer is 16 GB (a 4 GB SO-DIMM in each slot).

You can use any Small-Outline dual inline memory modules (SO-DIMMS) that meet all of these criteria:

PC3-10600
Unbuffered
Nonparity
204-pin
1333 MHz
DDR3 SDRAM
You can use RAM module sizes of 2 GB or 4 GB in each slot.

DIMMs with any of the following features do not work in the iMac (Mid 2011):

Registers or buffers
PLLs
ECC
Parity
EDO RAM