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Originally posted by theetruscan
Under what controlled conditions were such tests taken? This is total trash.
I'm sorry to be so blunt, but such statements really are total crap.
The water won't be warmer. Why? Because the CPU is pumping the same amount of heat into the water. There is no "extra heat". If the CPU has clocked at a certain speed, and runs at a certain voltage, running a certain program, it emits the same amount of heat energy.
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Are you sure? I mean obviously the CPU releases the same amount of heat, so some of the reasoning may be faulty, but it seems reasonable that the reduction in flow rate from the additional pressure drop could result in something on the order of 1C temperature increase. I could be completely off base here, but it was my understang that lower flow rates result in higher water temps.
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The jet inpingement throws out (to some extent) the lower-flow-is-worse theorem, because of the (non-recoverable) pressure drop being created by the jet. It's still valid, but not by the same equation.
The temperature gradient is what makes all blocks different. If you think about it, given the same flow rate, different blocks will perform differently, because they all allow a different amount of energy to remain within the baseplate, or the die contact area.
Cathar succesfully balanced a very thin baseplate, an optimal fin configuration, and an excellent flow configuration. If you can see that, then you know why WW works so well.
If you're "almost there", I can tell you that simply making the baseplate thinner doesn't always work, and that it can make the performance worse, if it's not balanced with fins and flow. In other words, if you're going to expose the water to a higher temp (same wattage, but higher temp), then you better make sure that the water can take that heat away.