or with very few registers per thread on die with the rest in storage ala TMS9900 http://en.wikipedia.org/wiki/Texas_Instruments_TMS9900 http://en.wikipedia.or

or with very few registers per thread on die with the rest in storage ala TMS9900 http://en.wikipedia.org/wiki/Texas_Instruments_TMS9900 http://en.wikipedia.org/wiki/Texas_Instruments_TMS9900