building AMD x2 systems with 8Gb ram

I want to build a system for software development, running VMs, and general computing. Not interested in overclocking or playing games with this machine. Probably Athlon X2 5200+ CPU. First req. for me is large memory - 8GB is ideal. I would like to use DDR2 800, but I see some mobos don't have approved configurations for 4 sticks of DDR2 800. Anyone using DDR2 800 to build an 8GB system - which mobo did you use?

Also I wonder if it is absolutely necessary to buy a 4x2Gb matched set of DRAM (such as
GEIL's http://www.newegg.com/Product/Prod [...] 820144109)
or is it possible to get away with the cheaper option of buying 2 otherwise identical 2x2Gb sets at the same time?

Of course I will use 64 bit O/S (probably w2k3). I also want dual monitors (or more - Surroundview with 3-4 monitors sounds great). I would love to use a mobo with integrated graphics, DSub+DVI video, builtin 1394, ethernet on PCI-e, and ability to add another vga card - but are these too consumer-oriented to have their memory maxed out? Anyone tried it?

I would like to hear from anyone who has built an AMD 8 Gb system, what hardware you used and what (if any) problems you encountered. I will report my experience.
TIA, Jintian

I guess so i cant get anyone to help me overclock my AMD 2300.