Replacing HDD late 2012 27"?

[Tanax]

How easy/difficult is it to replace the HDD for an SSD in the new 27" iMac's? I've tried searching for it but found no results at all.

 

[Jeantro]

it's better to use an external SSD disk with usb 3 or thunderbolt

 

[flopticalcube]

Unglue the glass, remove the screen, replace the HDD. ifixit has some info on the teardown. External drive either USB3 or TBolt should be just as fast.

 

[Tanax]

Thanks guys. I was actually trying to decide if it would be worth it to get the Fusion drive 1TB or a regular 1TB and upgrade it to a 256GB SSD and have the 1TB as external. Fusion drive price is quite hefty when comparing to regular SSD's + external storage solutions.