ddr2 AND ddr3 in the same mobo

[amishrobots]

So, I've decided on a cpu: athlon ii x2 250 . And now I need to pick a mobo. I came across an article about a jetway mobo that had 2 separate sets of ram slots; you could use ddr3 OR ddr2. This would be an ideal setup, as my roommate will sell me a 2gb 800mhz set of ddr2 for $15, but I will want to be able to upgrade to ddr3 later. Obviously I'm trying to build cheap here, and I want the most bang per buck. I've not had much luck so far in tracking down a good full list of what mobos are available with this sort of hybrid ddr2/ddr3 ram capability.

So, can anyone give me a good list of the (amd) mobos which can do both ddr2 and ddr3?

(Preferrably with links to reviews)

[amishrobots]

i see now that MSI also has one of these "hybrid ram" boards, the 790GX-8D :

http://www.tomshardware.com/news/MSi-Eight-Memory-Slots,7214.html

so, thus far I've been able to find two, with little luck in finding them actually for sale anywhere, and few decent reviews available. Any others?

[Kano]

Usally it is not worth to switch later. Better use dual channel, gives more speed. Maybe your next board will need ddr4 ;)