Quote:
Originally posted by Kevin
No. It is quite severe. Copper is an excellent material for transferring heat. All heat that is reasonably transferred to the copper base of the waterblock transfers all throughout the copper block. Putting a large copper/aluminum block on the top of the copper waterblock would be like putting another CPU on top of the waterblock for it to cool.
-Kevin
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No, it's not another heat source it's a heat mass. What it will do is make the system slower to react to changes in cpu load. Ie, it will take longer to go from the idle temp to the load temp and vice versa. Depending on the test, you may see a higher average temperature because of that, but you shouldn't see much change in the maximum temp.
The question is, how useful would it be? If you are using watercooling to overclock your cpu to the max, then presumably the hsf couldn't handle the load even if it were on the core, much less hanging off a waterblock. It would buy you a little more time before the inevitable crash, but that's it. If you are using watercooling to reduce noise with limited overclocking, then it might work, though it wouldn't be much fun to epoxy that hsf you just did all that work to get rid of back in your box
