Upgraded to 8GB and the 750Ti graphics card with windows 10. Works like a dream. So quick to start up. Haven't tried anything too taxing on it yet but Eve online is on high definition.
Build is good quality. No blotware installed so runs quick out of the box. Delivered in good condition well packaged.
Not sure about base line specs as an all out gaming machine but excellent place to start a custom upgrade.
Was in my hands by the 8th working day, because of the custom work. Watch out for the delivery charge at the end its a stinger but you do get next day delivery.