Microsoft's redesigned Xbox 360 has enjoyed the biggest launch for a "revised" home console in UK history, GFK Chart-Track has said.
Over a two day period, the new Xbox 360 sold "around the same" as the original Xbox 360, released in 2005. No sales figures were provided.
However, Chart-Track did say the launch surpasses that of both the PlayStation 2 Slim and PlayStation 3 Slim.
The new 360 model, described by Microsoft as "whisper quiet", includes built in Wi-Fi and a 250GB hard drive.
Last week specialist retailer GAME said it saw "amazing demand" for the console, which costs £200. It opened 400 stores at midnight Thursday.
In the US, sales of the new Xbox 360 made up 40 per cent of the 451,700 Xbox 360s sold in June. The total number of Xbox 360s sold rose by 88 per cent year-on-year.