Model A1311 / Mid 2011 / 2.5 & 2.7 GHz Core i5 or 2.8 GHz Core i7 Processor

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upgrade with 2GB or 4GB memory?

My mid 2011 imac i5 has 4 memory slots - it came with 2 standard at 2GB each (total of 4GB RAM). My machine is running slow (I've upgraded to Sierra, although it was slow before), so am thinking of adding more memory. Should I add 2 x 2GB, or just 1 x 4GB?

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Frankly I would add two 4GB sticks and never have to worry about it again.

If you can't afford to do that right now but plan to later then do the one four.

If you plan on never doing another upgrade, then go with the two 2s.

RAM Type: PC3-10600 DDR3 Min. RAM Speed: 1333 MHz

Details: Supports 1333 MHz PC3-10600 DDR3 SO-DIMMs (204-pin).

Here's how:

iMac Intel 21.5" EMC 2428 RAM Replacement

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Thanks! And would I add the 4GB to the existing 2 x 2GB, or replace the 2 x 2GB with 2 X 4GB?

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You have two empty slots. Do not replace, add.

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mark p will be eternally grateful.
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