True computer users and anyone who investigates the market and technical aspects of products don't buy brand computers.
With brand computers (like dell, gateway, compaq, etc....) you get a "custom" motherboard, and generally a hunk of junk harddrive that has the tendency to crash.
They cater to people who only want the latest and greatest technology. So when computer illiterate people hear the word "Pentium 4" on their TV advertisement commercials, they think "this is good stuff, the latest Pentium" Being illiterate as they are, they don't know the P4's perform like trash. When computer idiots hear the word "Intel", they tend to get excited (so the companies try to conceal the latter word Celeron by whispering it)
Now they speak of free CD burners now that more home user computer idiots have found out about making CDs. So they throw in the cheapest, lowest speed, generic, OEM burner.
They strip these things down by loading them with a minimal amount of RAM, 5400 RPM harddrives, integrated video, and things like that. That's how they are able to sell them for so cheap.
But that's what these kinds of PCs are good for, desktop applications (using MS Word to do your taxes, and sending chain e-mails to relatives), because as far as I am aware, only a computer idiot would buy one.