I have an opportunity to buy a 2011 iMac 27" 2.7 GHZ for $1200. I was also looking at the 2012 model in the 21.5" for $1299+Tax... My question is arent both machines basically the same in regards to the system specs? Trying to justify buying a year older with the bigger screen.. More importantly is the price good on the 27 @ $1200?
One last thing, warranty ends in a week on the 2011 model and I can purchase Apple care for $119... Worth the investment?
So between those two models, you have a couple key differences (save for the obvious difference in screen size):
1. Ivy Bridge Core i5/i7 vs. Sandy Bridge Core i5/i7
2. Desktop Components vs. Laptop Components
3. Gamer-Laptop-PC form-factor AMD GPU of last year vs. traditional laptop form factor NVIDIA GPU of today
4. 7200RPM drive vs. 5400RPM drive or Fusion Drive
Given this, let's analyze the differences. For one, Ivy Bridge on the newer 21.5" iMac will be faster than Sandy Bridge on the older iMac, hands down. So that's one point in the newer iMac's favor. The chipset in the older iMac is a desktop chipset, so that would likely offer greater overall throughput speed, but with a mobile version of that chipset's successor, the pissing contest over chipset (motherboard north and south bridge) speed between the two is likely a toss-up. The NVIDIA card of today ought to handily beat the AMD card of yesterday. Lastly, if you configure the iMac with a Fusion drive, your day-to-day performance ought to be faster than the 7200RPM drive in the 2011 27" iMac. If you don't, performance ought to be slower.
Given all of that alone, I'd go with the 2012 21.5" iMac over the 2011 27". Though, to add to it, a lot of the reliability problems with the 2009-2011 iMacs seem to not exist in the 2012 21.5" iMac, so there's also that. Having to shell out the money to max out the RAM at 16GB and get the Fusion drive is annoying, but if you can spend that money, I'd say get the 2012 21.5" iMac instead.
sorry... old imac is Processor
2.7GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache
8gb ram
AMD Radeon HD 6770M graphics processor with 512MB of GDDR5 memory
Both machines look like the same processor
Nope...new iMac carries Ivy Bridge (3rd Gen) Core i Series processors whereas the old iMac carried Sandy Bridge (2nd Gen) Core i Series processors, and there is a speed difference between the two.