From Sony’s press release:
NEW PLAYSTATION®3 RETAIL SALES ACHIEVE
1 MILLION UNITS IN 3 WEEKS WORLDWIDE
Tokyo, September 24, 2009: Sony Computer Entertainment Inc. today announced that retail sales of its new PlayStation®3 (PS3®) (CECH-2000A) computer entertainment system achieved a total of 1 million units*1 worldwide in the 3 weeks since its launch on September 1, 2009 [...]