iMac 27" 14,2 late 2013 CPU upgrade I recently brought an iMac 27" 14,2 back to life after a CPU fault (which  in itself was odd since I never seen a PC or Mac with a fried Intel CPU) and it runs pretty nice ... but on a Intel Core i3 4130 which leaves a lot to desire in terms of performance.

i'm thinking of replacing it with an i5 or i7 - but then I've seen that Xeon 2013 Xeon's are quite cheap and was wondering if the iMac Mainboard can run with it.

Does anybody knows if such upgrade is possible? 
E3 1150 Xeon's are basically i7s without the GPU but more cache and offer better per watt performance.



Update

I will test 3 different CPU's with the iMac 27 14,2 mainboard, despite the the answer below. The information I found is not conclusive and well... why not? 

I was able to grab 3 CPU's for testing, however the 1285 is not something you can call cheap alternative to i7 ;-) 


Xeon E3-1231v3   
Xeon E3-1285v3 
Core i7 4790K


Once tested I'll share the results here, incl. some pictures. The CPU cooling block CPU/GPU hybrid is quite difficult to mount and one need to be really careful with it -  something ifixit and others don't mention.
It will not work with a Xeon processor.  

The CPU you should get is anything from the Haswell line of CPUs.  If I were doing the upgrade, I would install an Core i7 (4771).