Some New Blood On The Testbed :)

[Jupiler]

No I don't use dual laings on the testbed, I use the RD-30 at 18V... let's just say that the swiftech micro res is usually pretty active, even with a nozzled fuzion or a storm. With this DI it is hard to see the water even churn in the res. I mean, very restrictive. I suspect this is why it performs the way it does (so far). I really do like this block a lot.

You're right.
According to Radical_53, who has tested 16 blocks in the latest edition of the HWLuxx [printed], a German magazine, the Cuplex is a very restrictive block.
The Fuzion is still the flow king, with 5.82L/min.
As for the Cuplex, he measured 3.86L/min and it ended 3th last in the flow rate charts.
It performed very well on both a dual core and quad core though.