Holder of a MAC PRO 2.1 of May 2007 (2 x 3 ghz Quad-core Intel Xeon). I would like to know if it is possible to upgrade it to make it a machine again usable for video post - production. So what is it possible to do (change part, update, EFI upgrade)? And at what price ... 
Thank you in advance for your advice.
	
		
			
		
		
	
				
			Thank you in advance for your advice.