Depends on who you believe... http://answers.yahoo.com/question/index?qid=1006042012944 http://groups.google.com/group/comp.sys.intel/browse_thread/thread/d4d7effc305e94e7/654461755d2df9b9%23654461755d2df9b9 The second link makes the distinction between physical processors and cores with the upshot being that XP home will make use of both cores. At 2006.05.18 02:13 PM, jeff larson wrote: > > For anyone getting a DuoCore or other multi-processor machine > > (that would be all the smart people!) then they need pro - > > home doesn't support multiple processors, afaik. > >My understanding is that Dual Cores are not considered to >be "multiple processors" from the OS's perspective. There are >a lot of Dual Core machines being sold right now bundled >with XP Home or Media Center. > >http://www.dell.com/content/products/features.aspx/cto_entdt_e510?c=us&c >s=19&l=en&s=dhs > >I really doubt they would even offer this configuration >if you could only use one core.