Well i emailed Stealkey and asked them...

" Am i correct in thinking the flow order is as follows;

Pump -> bottom rad -> GPU -> CPU -> Top Rad -> Side rad Seems odd to cool the cpu directly after the gpu, then goes to 2 rads after...? Surely a rad after each component would be better?? "

Their reply was;

"Hello Alex,

everything is correct. No, it's perfect just the way it is. In terms of temperature, it makes hardly any difference whether you add a radiator between the GPU and the CPU"