Hello, I have a 2011 i7 2.5ghz 16 gb RAM iMac that I love and want to keep running. I really don't need the latest and greatest as it has a DVD player (the only one in the house) and I can play my favorite old games like Europa Universalis III (IV works fine too!). Anyway, it has a 1TB 72,000 rpm that is probably the cause of increasingly slow application start up times, otherwise I'm happy with the computer after 6 years of constant use by the family- proof of quality Apple products. I've had to get pennies out of the super drive, but yeah, an excellent machine. So for years now I've been considering upgrading to an SSD and I would like some advice as to what size of SSD I should obtain as they are not cheap. https://eshop.macsales.com/upgrades/imac-21-5-inch-mid-2011-2.7-ghz/internal-drives I've used around 470 GBs of my 1TB HD. With my objective being to speed up the computer, should I go for the 250 gb or the 500 gb at $90 more? If I go for the 250 GB, how do I go about splitting my HD? Would it be something like moving infrequently used memory hogs like iPhoto to the hard disk?