I bought an evesham axis in May 2003, I have had no problems at all they have won all kinds of awards all of which are listed on the website. They are renowned for their reliability.Their warranties are very good too, there is information on these on the website but you will have to ring up for the prices there are different options. There is information on the AMD ahtlon 64 there is a link on the axis series page. Here is the link for the page about intel processors click here
the link to the nvidia website click here they make graphics cards
the link to the ati website they make graphics cards also click here
these are the leading graphics card manufacturers
I don't know the latest technology but its all there on the websites, hope this helps.