Link to the product page on coolermaster's site

Link to the product page on amazon

Specifically the ones on Amazon list lower airflow/static pressure numbers, as well as higher decibels, which makes me think they are the older model ((even though visually they look near identical to the pictures on coolermaster's site))

Update: I found out that the Halo2 fans ARE being sold with this cooler, so they are available...somewhere >.>