LOL I thought we went through this earlier, you could always get an FX-60 if you want to stay AMD

However, C2D in my opinion is the way to go, but which one? e6300 (Multi 6-7) and e6400(6-8) are awesome value for money, but depending on the application the lack of L2 cache can hurt them. The B1 rev 6300 and 6400 chips could easily overclock to at least e6700 speeds. If you really want raw power e6600 - e6800 can't be beaten, especially the 6800 with unlocked multi :yumyum: . But, you need to have some serious cash for the luxury. I'd honestly settle with the happy medium of 6600 - 6700. LOL I have a family and mortgage
As far as motherboards are concerned, you are limited if you want to retain SLI. Do you really need SLI? Imho, it's really only warranted if you're running at a huge screen resolution.The 570 and 590's suffered from memory scaling issues; nforce 6 is on the way which is supposed to have fixed this. But, there hasn't been a release date for them yet, or that I can find. Perhaps, you could get an P965 ASUS P5B Deluxe (which from bios 0711 also supports crossfire...ATI R600 :yumyum: ), either an DX10 compliant
8800GTX or GTS and the Conroe processor of choice.
As far as RAM is concerned anything GSKILL, OCZ or Mushkin. But as I told you this morning, there are two variants on the ram that I have. Don't forget to get the latest revision specifically for Intel, or you'll have some major crashing issues.
Sorry if this seems a little disjointed, but I have 3 kids hanging off my legs atm lol
PV