Good call, Airspirit: if one pump dies, some of the coolant is going to recirculate within the CPU and GPU loop, bypassing the rad.
And the rad will need to be dissipating a lot of heat, or the coolant temp will be higher.
I see your point about running the blocks in parallel: you'd supply the blocks with fresher water, rather than give them a higher flow rate: given that the blocks are Swiftech, and that they should have a relatively low pressure drop, and that their performance is not considerably improved with more flow (an assumption), then you'd be right. But is my assumption correct?
