A streaming PC is a hungry animal it needs loads of front end memory to cope with the information it is streaming down from the internet.
If you want the best graphics and limited lag then you need a PC that is designed specifically to stream games, video and music.
All streaming PC’s come with the NVIDIA Game Stream Shield gaming system and at prices from £634.99 http://pc-tec.co.uk/ is the first place to look at when buying your new streaming machine.
The price include 2 Screens high end CPU’s loads of memory and the Nvidia 750TI Shield gaming system.
There are some more advanced options but even they won’t stretch your budget too much.