First time building a rig ground up...

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so: x16x16electrical>x16x8electrical>x16x4electrical? Is that a true statement?

Therefore I'd put one card in the main x16x16 and another in the x16x8?

LOL i swear it, THIS is my last question!
 
That is a correct statement.

Not to mention that if you tried to use the bottom and top pci-e slot, you would most likely have a tough time finding a long enough crossfire bridge.
 

Yes, that's true. The motherboard manual should also tell you which slots to use for crossfire.
 
@xX StitcH: Oh yeah, i should have thought of that... -_-

@shortstuff_mt: oh the manual will tell me? sweet!

Thank you everyone for your help. I couldn't have done this with out any of you!

I guess I'll begin slowly ordering the parts by the end of this week. I'm still open to tips and help though; if anyone remembers something else don't hesitate to post. 😉

 
Have you thought about going sli? You can get slighty better performance than running crossfire. Also the G Skill PI Black DDR2 800 has tested to be fast and efficient during gaming because of the lower latency.. You can get the ne GTX 275 which will outperform the 4870 1GB and the 4890 512 for about $249.. Later on u can add a 2nd or even 3rd GTX 275 depending on whuch MoBo u have, and will smoke most crossfires set ups except the 4870 X2's or the upcoming 4890X2's but thats why nVidia has the gtx 285's and the GTX 295.. Think about SLi it usually smokes crossfire set ups.. You can even run 2 GTS 250's and play anyrhing out there..