Should I choose 16GB RAM or fusion HDD?

I am finally going to make the switch from PC and and going to buy a 21" iMac. I am pretty much settled on the 2.7Ghz quad corehttp://store.apple.com/uk/buy-mac/imac?product=ME086B/A&step=config but I can't decide whether to spend an extra £160 on going from 8GB to 16GB RAM or changing the 1TB SATA to a fusion drive. I will mainly use it for browsing the web, email and possibly some desktop software and web development work. However I do have some PC only software I must have so I will probably also want to run parallels and/or bootcamp. Is this a decent enough machine and do you have any recommendations as to whether I should go for the 16GB RAM or the fusion drive please. I understand the 21" iMac RAM can't be upgraded after purchase (can it be done at Apple store?) so I need to get this right from the outset.
Thanks

Save a few more pounds and get both, neither can be upgraded after the initial purchase so it's best to save a bit more to get them both.

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Why has maverick bogged down my iMac 21.5 with 16gb Ram to a snail mode I looking going back to OSX Mountain Lion, Why has maverick bogged down my iMac 21.5 with 16gb Ram to a snail mode I looking going back to OSX Mountain Lion

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I'm about to purchase the new macbook pro retina.
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Have a look at this Macworld test from last May, especially the Photoshop test: http://www.macworld.com/article/2034655/lab-tested-the-ramifications-of-addition al-memory-on-a-mac.html
It might also be helpful to look at the AnandTech site, which has comprehensive reviews of the earlier versions of the computer you are considering and is likely to have a review of the latest MacBooks within a week or so: http://anandtech.com
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hi pilot911,
Welcome to the Forums.
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HI there,
I have recently purchased the Satelitte S50t-B laptop and have a few question about upgrading:
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This notebook is listed on Toshiba page:
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Windows set to default virtual memory : 16348 MB =16GB !
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Thanks for your reply tjk, of course with 16gb on the 15'' for $200 more I'd have easier time, but in this case I am comparing a refurbished - the lowest 15'' 16gb I could find would cost $500 more, I just can't do it.
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its very easy to do, here are step by step instructions with photos

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Erratic behaviour. Kernel Panic. RAM problem? HDD? iBook blues..

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Hi, and welcome to Apple Discussions.
It is doubtful that you have been seeing is a kernel panic, since a kernel panic does not give you a blue screen.
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The iBook G4 Discussions can be found here.

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illustrator is the one which needs higher components as the other programms, right?
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Mylenium

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cheers,
Ian

Open your Activity Monitor.
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What Is Activity Monitor (or How to Take Your Mac's Pulse) - O'Reilly Media

Mac pro with 16GB RAM for CS3? CS3 cant use more than 3 GB? why

hi
does it make any sense to buy 16GB RAM for a mac pro
only for working with CS3?
i am retouching prof. and in the moment we run CS2 on the mac pro.
later CS3 is in the pipeline.
we ordered 16GB RAM in order to work with HDR images and big file sizes coming from hasselblad h2 and h3 (300dpi, 23 x 23inch, round 50 or 100 layers, filesize 1 - 2GB per image.)
thanks

found this article @ adobe website
thanks for your help!
"When you run Photoshop CS3 on a 64-bit operating system, such as Mac OS X v10.4 and later, Photoshop can access up to 8 GB of RAM. You can see the actual amount of RAM Photoshop can use in the Let Photoshop Use number when you set the Let Photoshop Use slider in the Performance preference to 100%. The RAM above the 100% used by Photoshop, which is from approximately 3 GB to 3.7 GB, can be used directly by Photoshop plug-ins (some plug-ins need large chunks of contiguous RAM), filters, and actions. If you have more than 4 GB (to 8 GB), the RAM above 4 GB is used by the operating system as a cache for the Photoshop scratch disk data. Data that previously was written directly to the hard disk by Photoshop is now cached in this high RAM before being written to the hard disk by the operating system. If you are working with files large enough to take advantage of these extra 2 GB of RAM, the RAM cache can increase performance of Photoshop.
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Should I choose 16GB RAM or fusion HDD?

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