Editing Celeron (section)

==== Willamette-128 ====
These Celerons were for socket 478 and were based on the ''[[Pentium 4#Willamette|Willamette]]'' [[Pentium 4]] core, being a completely different design compared to the previous Tualatin Celeron. These are often known as the ''Celeron 4''. Their L2 cache (128&nbsp;KB) is half that of the ''Willamette''-based Pentium 4's 256&nbsp;KB of L2 cache, but otherwise the two are very similar. With the transition to the Pentium 4 core the Celeron now featured SSE2 instructions. The ability to share the same socket as the Pentium 4 meant that the Celeron now had the option to use [[RDRAM]], [[DDR SDRAM]], or traditional [[SDRAM#SDR SDRAM|SDRAM]]. Willamette Celerons were launched May 15, 2002, initially at 1.7&nbsp;GHz, and offered a noticeable performance improvement over the older 1.3&nbsp;GHz ''Tualatin''-based Celeron part, being able to finally outperform a 1.3&nbsp;GHz AMD Duron, which at the time was AMD's top competing budget processor.<ref>{{cite news|last=Schmidt|first=Patrick|title=Good Old Newbie: Intel's 1.7 GHz Celeron for Socket 478|url=http://www.tomshardware.com/2002/05/15/good_old_newbie/|archive-url=https://web.archive.org/web/20071213032908/http://www.tomshardware.com/2002/05/15/good_old_newbie/|url-status=dead|archive-date=December 13, 2007|publisher=[[Tom's Hardware Guide]]|date=May 15, 2002|access-date=July 30, 2007}}</ref> On June 12, 2002, Intel launched the last Willamette Celeron, a 1.8&nbsp;GHz model.<ref>{{cite news|last=Sigvartsen|first=Ana|title=Intel pushes Celerons to 1.8 GHz|url=http://www.infosatellite.com/news/2002/06/a130602celeron_18.html|publisher=Infosatellite.com|date=June 13, 2002|access-date=July 30, 2007|url-status=dead|archive-url=https://web.archive.org/web/20071012160258/http://infosatellite.com/news/2002/06/a130602celeron_18.html|archive-date=October 12, 2007|df=dmy-all}}</ref> It contains 42 million transistors and has a die area of 217&nbsp;mm<sup>2</sup>.<ref>{{cite web|url=http://www.chiplist.com/Intel_Pentium_4_Celeron_processor_Willamette_128/tree3f-subsection--2027-/|title=Intel Pentium 4 Celeron processor (Willamette-128)|work=chiplist.com}}</ref>

In Intel's "Family/Model/Stepping" scheme, Willamette Celerons and Pentium 4s are family 15, model 1, and their Intel product code is 80531.