The fan itself is wired so that it may be plugged right into a Tt proprietary rheostat.  Two different fan speed controllers to allow you easy and quick access to adjust your fan speed are included.  The first of these fits into one of your 3.5" bays.  The rheostat itself is polished aluminum with a single knob so that it will blend in nicely with most any aluminum case.  The second included rheo fits in one of your unused slot covers in a case's rear to keep things out of sight but still functional.  Some other goodies for fan adjustment are included but we're going to get to these in a few minutes.

Everything about the Volcano 12 says big.  The sink is billed as weighing 708 gms but it ended up tipping our scales (fan included) at 732 gms.  That's 1.6 pounds!

If you think those fins look pretty tightly packed you'd be right.  Sixty-six fins.  This is the highest fin count I have personally ever seen on a heatsink.  The fins themselves taper from roughly 82mm at the top, down to 63mm in width where they attach to the base.  I'm not going to do the math beyond saying, that is one hell of a lot of surface area.

Looking down at the top of the Volcano 12 we see two sets of mounting holes.  the V12 can handle an 80mm or a 70mm fan.  It comes with an 80 x 80 x 32mm fan but its nice to have options for later if you choose to go with another fan for some reason.

Here is the fin block removed from its shroud.  This really is impressive to look at I think.

The base of the V12 measures 64 mm square and 6 mm thick.  What was a bit disappointing was the finish on the base itself.  Most certainly the lap job was adequate but there is a lot of room left for improvement.  I've seen some bases on Thermaltake sinks you could shave on; certainly not this one.

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