North America
Canada
http://www.tigerdirect.ca/
http://www.bestdirect.ca/
http://www.ncix.com/
http://www.directcanada.com/
http://www.newegg.ca/
http://www.canadacomputers.com/

Mexico
http://www.paguito.com/ <---- This is a Fry's / Tiger Direct type store but they do sell PC parts
http://www.pcdomino.com/
http://www.pc-mexico.com/
http://www.digitalife.com.mx/
http://www.dimercom.mx/index.php?route=common/home <--- sells lots of gaming specific and overclocking components
http://www.pcdigital.com.mx/
http://www.pcexperts.com.mx/
http://www.tunuevapc.com/

USA
http://www.newegg.com/
http://www.circuitcity.com/ Nice return policy. Good place to order a monitor if you need to get one online.
http://us.ncix.com/
http://www.buy.com/
http://www.amazon.com/
http://www.tigerdirect.com/
http://www.provantage.com/
http://www.ewiz.com/
http://www.frozencpu.com/ great for cooling supplies of all kinds and case mods.
http://www.frys.com/template/index/
http://www.microcenter.com/



Central and South America (includes Caribbean)
Argentina
http://www.nb.com.ar/
http://www.bigpoint.com.ar/

Brazil
http://www.megamamute.com.br/ <--- caters more to gamers
http://www.kabum.com.br/cgi-local/kabum3/site/home.cgi
http://www.oficinadosbits.com.br/ <--- caters more to office PCs but sells gaming parts
http://www.balaodainformatica.com.br/site/index.asp?pagina=principal <--- Best Buy type store that sells PC parts
http://www.e-armazem.com.br/loja/default.php?PHPSESSID=eda6vjtabflvuh91b1jbfei3i0
http://www.sysconn.com.br/home <--- huge selection, sells lots of gaming and overclocking specific components
http://www.terabyteshop.com.br/
http://www.x5computadores.com.br/
http://www.chipart.com.br/
http://www.bigsonline.com.br/
http://www.compujob.com.br/ <---- sells pre built rigs and PC parts

Chile
http://www.magens.cl/index.php
http://www.pcofertas.cl/index.php?route=common/home
http://www.pcfactory.cl/

Costa Rica
http://www.cubixlat.com/ <--- ships to Costa Rica, Dominican Republic, and Guatemala, mainly sells pre built rigs and a few components but nothing like Newegg

Colombia
http://www.infoshopcorp.com/index.html

Ecuador
http://www.tecnomega.com/index.php?site=inicio

Guatemala
http://www.intelaf.com/index2.asp

Jamaica
http://store.intcomex.com/en-XJM/Home <--- ships to multiple countries in Central and South America as well

Panama
http://www.yoytec.com/index.php

Peru
http://www.grupoimportek.com/

Uruguay
http://www.banifox.com/

Venezuela
http://www.compumall.com.ve/index.php

Australia and South Pacific
Australia
http://www.msy.com.au/
http://www.techbuy.com.au/
http://www.pccasegear.com/
http://www.mwave.com.au/
http://www.umart.com.au/
http://www.scorptec.com.au/computer
http://www.itestate.com.au/pages/product/pdt_homepage.faces
http://www.pcdiy.com.au/
http://www.staticice.com.au/ Price search engine


Tunisia
http://www.3ci-online.com/
http://www.cii-tunisia.com/home.php#&panel1-1
http://www.mci.com.tn/mci/index.php
https://bestbuytunisie.tn/

New Zealand
http://pricespy.co.nz/ a shopping search engine
http://www.overclockers.co.nz/product/p-index.shtml
http://www.staticice.co.nz/ Price search engine