Update: (2/24/2016)
Nvidia reached out to us this evening to confirm that while the GTX 9xx series does support asynchronous compute, it does not currently have the feature enabled in-driver. Given that Oxide has pledged to ship the game with defaults that maximize performance, Nvidia fans should treat the asynchronous compute-disabled benchmarks as representative at this time. We’ll revisit performance between Teams Red and Green if Nvidia releases new drivers that substantially change performance between now and launch day.
From Nvidea fóruns.
Currently asynchronius its not enabled in-driver,but GTX 9xx series does support asynchronous compute but its off on the drivers.
Only when the game be oficial realesed they will work on the 1 driver to GTX 9xx séries Asynchronous.
Its what they told us on the VIP section.