So is there just no possible way to get 2 x16 slots on a motherboard that doesn't cost a gagillion dollars?
Here is the part list, so I guess I have to run x8 on a motherboard like this unless there is a motherboard with 2 x16 PCI-E slots that costs less than $200 (2 way CrossFire with 2 GPU's that run at x16)? So if the GPU's use x16 each and I can only supply them x8 each in CrossFire then I'm not getting their full potential correct?
Performance difference will be negligible. Remember, PCI-E 3.0 @ x8 is equal to PCI-E 2.0 @ x16
If you want true 2 x PCI-E 3.0 @ 16x, you will have to go with the X79 platform.
Also, I wouldnt bother with 2 x R9 270X right off the go. For the same price, go with the GTX 780 and go SLI later.
Explain further and elaborate, no one ever explained what x4 and x8 and 2.0 and 3.0 were to me.
My explanation would be piss poor at best. Give this a read, it will give you some numbers to work with. http://www.pugetsystems.com/labs/articles/Impact-of-PCI-E-Speed-on-Gaming-Performance-518/
And what do you think about the bus supply when doing things like litecoin mining? Would you happen to know anything about that?
No experience with mining, but people use PCI-E x1 to PCI-E x16 risers so they can use more GPUs. So from my guess, it has little impact.
Ok, and lastly, my friend reviewed my part list and said that there was not enough PCI power thingies to power the GPU, I don't remember exactly, but he said that from different sources he found that it had either 4 or 2 connections (the PSU), I don't really know what he was saying, something about insufficient connections... can you check it for me?
This topic has been moved from "Systems > Part List Opinions Wanted" to "Components > Motherboards".
The PCI-e speed makes a very small difference. It really doesn't matter. Since you said you are mining. The cards don't have to be in crossfire to mine. They just have to be on the board with drivers. You need to be worried about your difficulty and thread concurrency settings while mining.
The CrossFire allows me to kick my computer into high gear when I need to do something graphic intensive or play a video game.