graph above illustrates how much air each of these units can
blow (no pun intended). Fan speed will have a big impact on
their performance but that's not all, the form will also effect
each fan's ability. If it's only your GeForce or Voodoo3 you
want to cool down, you best choice is probably the CBF32. This
is because it pushes all its air around only one or two cards.
On the other hand, if you want to cool down two Voodoo2s in
SLI in addition to your 2D graphic card, you'll be better served
by the original card cooler which cools up to four cards, or
the CAF12 which cool up to five.
the CAF12 has the advantage. Power may be a concern if you only
have a 230W or less power supply, or if you use lots of other
fans and drives. The CBF32 power consumption is really high
and the YS Tech fans use 3pin connectors (resulting in higher
power use). You really should get an adapter to plug it right
into your power supply. The card cooler exists in 3 forms: sleeve
bearing with 4pin connectors, ball bearing with 4pin connectors
or ball bearing with 3 pin connectors.