is this the best choice for in imac, 27 inch, late 2009 (currently has 4GB
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As long as what you order is Kingston part number KTA-MB1066K2/8G it is compatible with any of the Late 2009 27" iMacs (Core 2 Duo/i5/i7's).
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Mine is a Early-2009 27" and that's what I used. Bumped it up to 8GB, reloaded Mountain Lion and now it screams like a brand new machine. Can't imagine needing to upgrade the hardware anytime soon. Great deal.
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Hi Willy, I bought this memory for 13 inch White Unibody 2009 (late) Macbook which was later upgraded to mavericks. The laptop in question was upgraded from 2gb to 8gb in under 5 minutes. You can expect a HUGE performance improvement.
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Not that I am saying that the other people who answered are wrong, but I have the mid 2011 model iMac, which came with 4gb of RAM, and it says on the box and on the Apple website that it is not upgradeable. On mine, I was able to take off the back cover and there were two empty RAM slots. So I replaced the two 2gb RAM sticks with 4gb, and added 2 more 4gb of RAM. I now have 16gb of RAM in my computer and it works like a champ...performance and speed wise.
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goto a Mac forum and sell either one or both of those memory sticks = many people will buy them. You Mac will take 2GB ram chips = 4GB total, but can only use 3GB of that.http://docs.info.apple.com/article.html?artnum=304284take one stick out and add a 2GB Ram chip = 2.5GB. Crucial is usually the best for Ram -check with NewEgg.com for Ram feedback. There are new models of the iMac coming out soon also (a few weeks). =May have better Ram options.
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Glenn Levy, you are INCORRECT. Unlike older iMacs, the RAM in Intel iMacs is a user installable part and does NOT void the warranty. I would recommend upgrading to at least 2 GB (1 GB is bare minimum these days). Anything you can do to reduce the amount of reading/writing to the hard drive will boost overall system performance.
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Im not sure about early 2009, I have a late 2009 imac 3.06 GHz Intel Core 2 Duo and this ram worked great.
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Your iMac probably requires the 667-MHz module. The 800-MHz SDRAM was first used in the early 2008 version.
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I bought the 20inch 2.0 ghz iMac last week. I dont think an upgrade of the CPU is required but wont hurt. I went with a RAM upgrade as I am a developer (100 bucks only for 4GB). It gives good performance with 2.0 ghz CPU.
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Actually, up until a couple of days ago on Apples iMac 20" Customize your Mac page, it said in the learn more link under RAM to 'choose the 1x1GB stick if you plan on upgrading later' or something like that. I emailed them... in a hopeless attempt to get them to actually add the option but all they did was removed that part in the learn more section :(
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Not if you really want to enjoy all the features. Runs great on 27 in iMac 2013 with all graphics turned up. In case you're thinking of upgrading.
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Hi Leonardo,The Early 2006 iMac only supports up to 2GB of memory using two 1GB memory modules. This 4GB kit is not compatible with it as it would not recognize the 2GB memory modules. To max out at 2GB you can use part number KTA-MB667K2/2G which is a kit of two 1GB memory modules.Thank you for choosing Kingston memory!-Jewel, Kingston US Technical Support
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I used it in my early 2008 iMac.Your manual should specify exactly which types of RAM your iMac can use. iFixit is also a pretty reliable reference.
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I'm not sure about part numbers, etc., but I upgraded from original Apple 1Gb to Kingston 2Gb. It was easy to do and my 2007 iMac has run well with no noticeable difference.
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I would serch Amazon for memory for that particular version of MacBook. That's what I did for my iMac i3
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My Imac is an older version too and I bought this hard drive and I love it. I have no problems with it at all. It is top of the line I think. I highly recommend it!
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Not compatible with your iMac 27 inch (mid-2011). Be sure to check the Apple Support webpages. If I read correctly, max size SODIMM module per slot is 4GB , that is, the maximum upgrade your iMac will accept is qty 4 of 4GB SODIMM=16GB total. Plus, suggested speed grade Apple recommends in 1333Mhz. You'd be over-paying for 1600Mhz of this Patriot part number, and I'm not sure if all 16GB would be recognized if you only populate 2 of the 4 SODIMM slots with 2x8GB vs. 4x4GB. I am using this Patriot mem modules in a Server Motherboard with an Intel processor-works fine there.
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Your iMac will tell you the exact memory upgrade you need for your pc. Click on the Apple symbol at the top left corner. From the drop down menu, select the "About This Mac". This will bring up the information about your system memory needs. You must make sure to purchase exactly as described. If you are uncertain, take your iMac to your local Apple or Best Buy store. The representatives will be glad to assist you in determining your exact needs. At Best Buy, they will match the price of Amazon and often install it for free or a small fee. I do not recommend "Genuine Apple" since it is way over priced. I use memory from Komputerbay which works perfectly. It has increased my speed and it makes my pc work like when it was new!