well it passed 6 hours of prime95 at those settings,so I am now gonna dial down and see what the lowest vcore is that will run 3.8,after that its time to see how far it will go.
at the moment it is on one loop with 2x 240 rads although i may have to change that to 2 loops as the idle of my gpu core rose by 5 degrees while i was pushing the quad.
res/pump->cpu->rad->gfx->rad->res/pump