sparetimepc
I have the cpu block, it dropped my CPU temps about 5C, its not like others though where you can put them on any direction, these must be put on with the optimus stamp either on the top or bottom, can't turn them 90 degrees for hose port convenience.
Ah, that's a bummer. That's my one thing with CPU block mfgers. Let us pick our flow direction while it faces us right side up.
With the Corsair block, I was able to unscrew and flip the shell/symbol to the direction I needed luckily.