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Originally Posted by Dukemurmur
that should perform VERY well on a bare die...if you can get the velocity up enough that thing i would bet would perform EVERY redily availble bloc on the market...maybe even match dare i say cathers...g-7....but that is only if you can get the jets righ and the bp thickness and so on...
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While I'm optimistic that this block will perform adequately, there are a number of factors keeping this from performing as well as Storm G-series blocks, for a few reasons:
- The G5 and G7 both have silver baseplates, which probably leads to a .5-.6 decrease in die temperature. This block has a copper baseplate, and I don't really intend to try a silver variant. Silver would be feasible, but I have serious concerns about baseplate rigidity with such a soft metal. There's very little I can do to increase rigidity enough to make silver a feasible material. I've done a little testing with my G5 and have found that the baseplate can 'bow out' slightly when applying a modest amount of pressure. Where it counts, the G5 baseplate is twice as thick as the one I've drawn up here. You do the math
- All Storm blocks are not highly restrictive. The G7 is less restrictive than the G5, the G5 less restrictive than the G4. High density jet impingement pin grid blocks inherently have a fairly significant pressure drop. My designs are more effecient with respect to the jets than other blocks (mainly the MP-05 blocks), but it should nonetheless be a restrictive monster.
- On a small, simulated die testbed, this block should be surpass the G4 slightly at most flowrates. In the real world, on real configurations, where flowrates vary from block to block, I don't expect wonderful results. Certainly good enough for me, though. And that's the idea.
I'd like to eventually duplicate the G7 some day, but by that time, we'll have multilayer procs with tiny nanopumps doing all the work, and $600+ worth of a fancy waterblock won't be able to compete
The G7 is no doubt a marvel (though not based on particularly new concepts), but it doesn't seem as if I'll ever have the chance to own one.
Thanks for your comments.