Well FFFFFFFFFFF UK! Damn this logging in! I had a great LONG reply, but even though I was logged in, it made me do it again and there went everything!
SO a summary.... The thicker the base-plate the more heat will be asorbed from the core= better temp buffer, BUT flowrate should be slower...all that heat has to be absorbed by the incoming water and that takes some time (not long in human standards).
Thin base-plates suffer from faster "heat overload" where the thinness prevents more heat from being absorbed, so a faster flow rate with the most amount of cooled water is need to keep the heat from being transfered back to the core.
A graph of Thermal-spread-resistance VS Thinkness would be nice! But I don't have the time
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