If you ordered 21.5" new iMac, unfortunately you would hardly be able to upgrade RAM. I don't mean you can't but it's a big task. The new iMacs don't have Memory Room on the bottom of the housing that you could have an easy access with a screwdriver. Now that Apple has gone farther towards thinner framework, the memory resides inside the housing making it difficult to play with. You have to use heat-gun to pry-up the front glass just to access the memory. The LCD and glass are defused together. Boy, you have a lot of work ahead. If you broke the glass while prying, you have no idea what costs you are inviting in. It's frustrating. Here's the [guide|11936|teardown] that may help you locate and decide if you wanna do it.
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If you ordered 21.5" new iMac, unfortunately you would hardly be able to upgrade RAM that it will take 1600MHz DDR3 memory. I don't mean you can't but it's a big task. The new iMacs don't have Memory Room on the bottom of the housing that you could have an easy access with a screwdriver. Now that Apple has gone farther towards thinner framework, the memory resides inside the housing making it difficult to play with. You have to use heat-gun to pry-up the front glass just to access the memory. The LCD and glass are infused together. Boy, you have a lot of work ahead. If you broke the glass while prying, you have no idea what costs you are inviting in. It's frustrating. Here's the [guide|11936|teardown] that may help you locate and decide if you wanna do it.
If you ordered 21.5" new iMac, unfortunately you would hardly be able to upgrade RAM. I don't mean you can't but it's a big task. The new iMacs don't have Memory Room on the bottom of the housing that you could have an easy access with a screwdriver. Now that Apple has gone farther towards thinner framework, the memory resides inside the housing making it difficult to play with. You have to use heat-gun to pry-up the front glass just to access the memory. The LCD and glass are defused together. Boy, you have a lot of work ahead. If you broke the glass while prying, you have no idea what costs you are inviting in. It's frustrating. Here's the [guide|11936|teardown] that may help you locate and decide if you wanna do it.