iMac RAM Upgrade Advise

mofish

macrumors member
Original poster
Aug 15, 2012
39
0
Scotland
Hi,

I'm looking to upgrade the RAM in my 27" iMac, but am not sure if i have selected the correct RAM. Could someone help clarify this is correct?

My iMac is 'Apple iMac (21.5 and 27-inch, Mid 2010) Desktop/PC'.

The RAM I have selected on the crucial website is:

8GB Kit (4GBx2)
DDR3 PC3-10600 • CL=9 • Unbuffered • NON-ECC • DDR3-1333 • 1.35V • 512Meg x 64 • • Part #: CT3309321

Am I correct in saying that you can mix and match RAM. e.g have 2x2GB and 2x4GB making 12GB total?
 

forty2j

macrumors 68030
Jul 11, 2008
2,585
2
NJ
If you're on Crucial's site, you should just run their system scanner. Takes all the guesswork out of the process.

You don't have to use the same size in each slot, but there's a performance improvement for using matched pairs.
 

Ak907Freerider

macrumors 6502
Apr 19, 2012
281
0
Ya Im running my stock two 2 gb ram sticks, 4 gb ram stock. Added in the other two empty slots two 8 gb ram sticks from corsair and it is just flying alongs no issues. So 20 gb ram total now and was only $69 from amazon. Love me some Amazon
 

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