Anything that doesn't have procedurally generated winds which make the trees and grass move realistically isn't much of a tech demo for me nowadays. Just looked like any other engine with the GFX turned up to ultra +.
:/
Spoiled by Chris Roberts
They always change things too much. If you change too many things at the same time you fail to learn which change was the one that was needed and which one wasn't! You end up ain a brand new balance mess starting from scratch. Be interesting to see what 3.14 is like.,
Clustering is a waste of time for gaming as most games can barely manage to use 4 or 8 threads properly or more than 1 gpu - a cluster of a thousand old slow cpu/gpus is about the worst you can get for gaming really.
Still it sounds cool.
It's tough at the moment in graphics card land. You'll have to wait for GPU prices to become a bit more normal to be honest. £200 doesn't buy much at all at the moment. A 1080 or 1080ti would be a good upgrade for you but not with current prices.