a vm for remote gaming help needed

[2stroke]

Heya guys heres my current setup

 

Rig:

prolaint hp ml110 g6

vga 1: onboard as1000 ati

vga 2: 5770 ati

cpu: Xeon X3450 2.66 4 core 8 threads

ram: 20gb ecc ddr3

sata: 4 onboard

sata2: SASLP-MV8

sound: none

drives: well cache and 6 other wd greens

 

Will the 5770 work fine with passthrough so i can remote game on my notebook. The Xen wiki says theres issues on reboot like with domu and dom0, has this being fixed and also ccc. are i better off going a nvidia and a quadro flash? I also have a 6950 is that more stable? Any help would be great. Is kvm a better route and is it still in unraid 6, i'am new to the vm scene but unraid from google search seems borked and i'am half tempted to scrap versio 6 and go esxi on bare metal after my googling on xen.