I've done a TJ-07 build before with CPU/GPU/HDD/etc etc blocks and the 1/2" tubing definitely makes for a cramped case.
I dropped down to 3/8" to reduce some of the clutter and increase airflow just to keep things clean on the inside. Less obstruction/more airflow is always good regardless of wc'ing. I'll throw up some picks after I build this weekend.
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