Base 27 iMac Retina vs. Middle iMac Retina

[sigomez]

This might seem like a silly question but besides the 1tb fusion drive on the 1999 iMac is their anything different on this iMac than the 1799 iMac?

 

[jerwin]

the video card. the m390 is much faster than the m380. (Even the top end card, the m395x, is somewhat behind the performance curve when it comes to running games at higher resolutions). It may not matter if you never play games or have no need of openCL.

 

[maflynn]

This might seem like a silly question but besides the 1tb fusion drive on the 1999 iMac is their anything different on this iMac than the 1799 iMac?

If you're comparing the lowest end 5k iMac and the middle version 5k, I only see the GPU being the difference.

 

[Samuelsan2001]

Far better graphics card and the mentioned fusion drive...