Editing Transmeta Crusoe (section)

== Software limitations ==
The Crusoe processor supports [[MMX (instruction set)|MMX]] but not [[Streaming SIMD Extensions|SSE]].<ref>{{cite journal |last=Halfhil |first=Tom R. |date=February 14, 2000 |title=Transmeta Breaks x86 Low-Power Barrier |url=http://www.ai.mit.edu/projects/aries/course/notes/transmeta_140701.pdf |journal=[[Microprocessor Report]] |quote=Although the FPU/multimedia unit can handle the same data types as Intel’s MMX instructions, Crusoe chips don’t have the new 128-bit registers defined by Intel’s SSE (Streaming SIMD Extensions). Transmeta says Crusoe could emulate SSE-type instructions and registers, but there’s not enough software support for SSE to justify the effort at this time.}}</ref> As of 2022, most browsers on Windows and Linux, and some other programs, need SSE or [[SSE2]] support;<ref>{{Cite web |title=Last versions of Windows applications that do not require SSE2 - Matej Horvat |url=http://matejhorvat.si/en/unfiled/nosse2.htm |access-date=2022-05-16 |website=matejhorvat.si}}</ref> therefore, that software will no longer run on the Crusoe platform. For example, [[Firefox]] dropped support for systems without SSE2 in 2017,<ref>{{Cite web |title=What version of Fire Fox for XP and site to download from? {{!}} Firefox Support Forum {{!}} Mozilla Support |url=https://support.mozilla.org/en-US/questions/1226034 |access-date=2022-05-16 |website=support.mozilla.org}}</ref> although [[K-Meleon]] could run without SSE on Windows XP. The Efficeon processor added support for SSE and SSE2.<ref>{{cite web |last=Case |first=Loy |date=October 15, 2003 |title=Transmeta Unveils the Efficeon |url=https://www.extremetech.com/computing/55146-transmeta-unveils-the-efficeon/2 |website=[[ExtremeTech]]}}</ref>