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macrumors newbie
Original poster
Dec 29, 2011
If I were to buy a 21.5" iMac with these specs:

2.5GHz Quad-Core Intel Core i5
4GB 1333MHz DDR3 SDRAM - 2x2GB
500GB Serial ATA Drive
AMD Radeon HD 6750M 512MB GDDR5

What are the possible and best upgrades I can do?

I am thinking about 16GB RAM and an SSD, but don't know.

I can afford £1000 now but I can not afford more so will upgrade in future:


macrumors member
Dec 27, 2006
Crewe (UK)
I bought the base iMac at the end of November - it's a fine machine. First thing I did was up the memory (2x 2GB sticks from were £10 each)

A couple of weeks ago I swapped the 500 gb stock WD Caviar Blue HD for a WD 2TB Caviar Green HD. As stated in loads of posts on here the HD fans ran fast (albeit not as noisy as I was expecting) so I tried, then bought, the HDD Fan Control app and the iMac now runs as quietly as when I bought it.

You've got to be happy opening up the iMac (and no doubt invalidating the warranty) but it was easier than on my previous iMac (a mid mid 2008 model) to replace.

I considered an SSD but the cost and small capacity still put me off.


macrumors newbie
Dec 23, 2011
Is there 2 HD bays or 1, I would get a 128GB SSD.

Unless it is a BTO machine with the HDD and SSD selected, then there is only a single drive bay. The BTO machines have a different internal configuration to accommodate the BTO 2 drive option.
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