MSI equip both of their N660 GPUS with something they refer to as “Propeller Blade Technology” that according to them provides 20% more airflow compared to the usual fan design. As usual, MSI has a very well known Afterburner Overclocking Utility and with that, it supports “Power Limit” and “GPU Clock Offset” to let you overclock.
R7970 is simply another type of beast judging by the features. There’s a One-Click Bios Unlocker option called “Unlock Digital Power” that basically removes the safety for those who want to go ahead with Extreme Overclocking. R7970 is mounted with TwinFrozr IV thermal design and something they refer to as GPU Reactor
As usual, their cards with All Solid Capacitors. Refer below for specification: