Combined sales of the old Elite, Pro and Arcade models of Xbox 360 in North America were higher than those of the new 250GB 'S' console in June, according to new data.
Microsoft's redesigned console accounted for 40 per cent of the 451,700 Xbox 360 units it sold in the month, said Wedbush Morgan Securities analyst Michael Pachter in a note to investors on Friday.
However, nearly as many sales - 35 per cent - were of the inexpensive Arcade model, which Microsoft reduced to a clearance price of $150.
Wallmart also offered $50 gift cards with each purchase of an Arcade console, effectively reducing the price of the console down to $100.
Sales of the Pro and Elite models, which also received a $50 price-cut, rounded off the remaining overall sales figures.
Amazon.de recently listed a cheaper Xbox Slim Arcade console bundle which has a 4 GB memory capacity.
The Xbox 360 Slim hardware revision has proved very popular amongst consumers, demand has been very high and the launch of the console is currently the biggest ever launch in the UK for a "revised" home console.