the first one is out off stock another is the revision B off the first one, good cooler,
looks better in that U can point the fan connected to the heatsink towards the back off the case, does your case have an 120 mm fan sucking air out the back , which would double up on taking air out off your case, and help remove that hot air from your cpu cooler.
the second one not really as this would suck air towards the cooler and still leave it in the case..