[Xen-users] Intel vPro performance gains?

[michael dorner <dorner@xxxxxxxxx>]

Hello,

I am currently building a new system for my own semi-personal use, and I 
have previously used Xen on my old System. I plan to use Xen more 
heavily with my new system, since I am a computer science student and 
would I like to do more with virtualization. I want to run Windows as 
well as Linux VMs with graphics passthrough at the least performance 
loss possible (obviously).
I would like to know if, and if yes, how much you can gain if your 
motherboard supports the vPro features of the current generation of 
Intel-chipsets(4th. core i). I would use an i7 4770 with a Q87-mainboard 
if there is a major gain to be expected, but resort to an i7 4770K with 
a Z87 for OC, in case the gain is not that big. Does anyone of you have 
experience with how the presence/absence of vPro (especially VT-d) 
impacts GPU-, I/O-performance? I dont expect any reference benchmarks 
here, but any experience would really help, even if its just "I have x% 
of what I have natively with/without vPro".
I would usually tend to use a regular Z87 board, because I do not like 
the "security"-features of the vPro-spec that well. I would ask about 
AMD too, but I am not up-to-date about their chips and they tend to have 
worse performance and/or siginificantly higher TDP than Intel chips. If 
anyone happens to knows a config with AMD that works great however I 
would appreciate that too.
Best regards and many thanks,

Michael Dorner

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