I know the 7970 is a PCIe-3.0 and I plan on buying an ASUS P8Z68 V PRO (G3) to go with it. As the board supports LGA1155, my best choice would be the i7 2600k or 2700k.
But here's the problem:
7970 although is backward-compatible with the board, the 2600k doesn't support it so ..
What will happen?
a) 2600k will support it via a PCIe-2.0 connection
b) 2600k doesn't support it at all and the whole pc will run without a graphics card
c) the whole thing doesn't even run
d) something else.
So it's safe to assume that you don't understand the term 'backwards compatible' then?
I suppose you could say that, this is going to be my first built pc. I did some googling and I got some very mixed answers.
Some said the new 7000 series won't run with the 2600k because it doesn't support PCIe3.0, but will run with the i7 3000 series because they do. Problem here is I don't want to spend extra money to get a better processor than I have to, and extra on a newer board to support them.
Just get a board that has pcie 3.0, ivybridge just has pcie 3.0 but we already have boards that have pcie 3.0 on it.
The board I'm getting is PCIe 3.0 ready, but the cpu isn't.
Ivybridge isn't out yet and won't be for a good few months so I'm just wondering ..
if the 2600k can run 7970 in "2.0 mode"
I know this may sound weird to you experienced guys but I really don't know the technical terms for these sort of things.
Backwards compatibility means that it should run regardless of the PCIe version, so it should run on v2.1, v2.0, v1.1a, v1.1 and v1.0.
Ahh .. I know where I've gone wrong, typo in first post, my bad.
The board is just "normal" compatible with the 7970 as it supports PCIe 3.0.
But I think you have answered my question since you haven't pointed out how the 2600k might have a problem with a PCIe 3.0 GPU.
So, am I right in thinking, in layman's term, the board will 'downgrade' the GPU to a 2.0 in order for the 2600k to recognise the GPU and everything will run fine as x8 bandwidth. Until when I replace the Sandy with Ivy will the GPU "run normally" as a 3.0 and I'll get x16 bandwidth. Correct?
If that's the case then I'll go ahead and buy these things.
Sorry for the confusion and thank you so much for the answers.
Question Solved. (if my train of thoughts were on the right track)