LongRun is an energy - saving microprocessor technology developed by Transmeta and first used in 2000. LongRun2 is an improved version of its predecessor and first appeared in 2003.
LongRun technology was primarily aimed at aggressively reducing the clock speed and voltage supplied to the processor to reduce power consumption. LongRun2 was designed according to the same concept and was aimed at qualitative improvements of its predecessor.
In LongRun2, compared with its predecessor, a new approach was used to dynamically adjust the voltage thresholds. Dynamic tuning is designed to stop leakage from microprocessor transistors, which were not taken into account when manufacturing the chip.
History and Licensing
LongRun technology was first introduced in the Crusoe family of processors in 2000. [one]
On October 14, 2003, Transmeta announced its Efficeon processor, and with it the second version of LongRun - LongRun2, which was used in it. [2]
In 2003-2004, Transmeta announced a restructuring of its business, the essence of which is the transition from the release of processors to the sale of its intellectual property. Licenses for LongRun2 were sold to NEC and Fujitsu . [3]
On January 25, 2005, Sony licensed LongRun2 for use in its products, primarily in Cell processors designed for PlayStation 3 game consoles. [4] [3]
On August 7, 2008, licenses for LongRun and LongRun2 were sold to the American company nVidia through a one-time payment of $ 25 million. [5]
In September 2009, Transmeta and LongRun technologies were put up for sale. [one]
Notes
- ↑ 1 2 Joel Hruska. Transmeta puts itself, LongRun technology up for sale . Ars Technica (September 2009). Date of treatment September 1, 2011. Archived on February 25, 2012.
- ↑ Michael Kanellos. Transmeta shows the fine print on Efficeon . CNet (October 14, 2003). Date of treatment April 25, 2010. Archived February 25, 2012.
- ↑ 1 2 Sony licensed Transmeta's LongRun 2 technology . 3DNews (January 26, 2005). Date of appeal April 25, 2010.
- ↑ Guest Contributor. Sony will run with Transmeta's LongRun2 . TechRepublic (January 25, 2005). Date of treatment April 25, 2010. Archived February 25, 2012.
- ↑ Brooke Crothers. Transmeta licenses low-power tech to Nvidia . CNet (August 7, 2008). Date of treatment April 25, 2010. Archived February 25, 2012.
External links
- CS433 Prof. Luddy Harrison TransmetaCrusoe (English) ( PDF ). University of Illinois (2005). Date of treatment September 1, 2011. Archived on February 25, 2012.
- Tom Krazit. Transmeta Plans for the LongRun . PC World (August 23, 2004). Date of treatment September 1, 2011. Archived on February 25, 2012.
- Wolfgang Gruener. Transmeta to finally see licensing revenues . TG Daily (July 5, 2007). Date of treatment September 1, 2011. Archived on February 25, 2012.