PS4 sales topped 4.2 million units as of December 28, Sony claimed on Tuesday.
The latest sell through total was announced by PlayStation boss Andrew House during a CES 2014 keynote presentation delivered by Sony CEO Kaz Hirai.
Having debuted in North America on November 15 and in Europe two weeks later, PS4 is now available in 53 countries and territories worldwide. Sony said on Tuesday that combined retail and digital PS4 software sales have surpassed 9.7 million.
The firm also claimed that PS Plus subscriptions increased by more than 90 per cent between PS4's launch and the end of 2013. PS4 owners require a PS Plus subscription in order to play online multiplayer, which isn't the case on PS3 or Vita.
Additionally, Sony said on Tuesday that over 1.7 million gameplay broadcasts have been streamed from PS4 systems via Twitch and Ustream.
House commented: "The momentum of the PS4 system keeps getting stronger and we couldn't be more thrilled gamers worldwide are enjoying the incredibly immersive gaming experiences along with deep social capabilities and entertainment provided by our network.
"After a remarkable launch, we look forward to bringing even more exciting content and continuing to explore the power of the PS4 system by adding new features and services, including PlayStation Now, in 2014."
Sony said on December 3 that worldwide PS4 sales stood at 2.1 million units, making the system's launch the biggest in history.
Having gone on sale in 13 markets on November 22, Xbox One sales topped two million units in 18 days, according to Microsoft. The US firm said on Monday that Xbox One sales hit three million globally by the end of 2013.