Current iMac or Refresh for Photography?

i'm looking pick imac , need deciding on whether buy (bto more likely) or wait refresh?

freelance photography published media, personal , commercial clients well. dont day day tasks 70%+ of time. photoshop multiple 25mp images @ time when photoshop. small video stuff imovie and/or adobe premier (family movies or quick tutorials) , other small stuff such as; handbrake ripping, itunes, web, email, adobe dreamweaver, adobe acrobat, adobe soundbooth, office/iwork.

i;

1. buy current imac 27" i5 2.7ghz bto (ssd+1tb)
2. buy current imac 27" i5 2.7ghz (and sell when refresh comes out)
3. wait refresh in april-june time frame?

though extremely inconvenient, work issued lenovo t420s w/ toshiba ssd (i5 2540) suffice until refresh if go route. love have usb3.0 not totally needed awesome. gpu increase wouldn't me unless in video ripping/en/decoding.

 

if better gpu wont improve workflow performance, there's no reason wait, because expected cpu improvement cca 10%, not much, sure, try reading amd gcn (graphics core next) should improve general computational operations (of course if apple implements it) , should bring opencl 1.2, or maybe apple implement nvidia use cuda. if of above features (gpu based) mean you, should wait, because next gen gpus bring huge improvements on current generation, if not, buy

 

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