Originally Posted by BeerPowered
Your i7 3820K has 40 PCIe lanes same as the 5930K.
Counting all of your devices:
Xonar Sound Card 1x lane total
Ultra M.2 Takes 4x lanes total
U.2 takes 4x lanes total
780Ti SLI 16x lanes total minimum or 24x lanes maximum
That's a minimum of 25 lanes or a maximum of 33 lanes.
The difference? The minimum runs both GPUs at 8x8x (5820K) Speeds and the max runs them at 16x8x (5930K). (Note: At 16x16x with all of your devices you are using 41 PCIe lanes, aka over budget by 1 lane)
So you can still get the 5820K which is similarly priced to the 6700K and run all your devices.
Very true but I get Antsy at 3 years. So I just do GPUs. At 5 years is when its like screw it all in! New Build!
if I want both GPUs running at 16x, the m.2 and u.2 drives at 4x each and the Xonar Sound card at 1x (41x combined) then I'm stuck with needing Socket 2011v3 which has 40, right? This still means one of the GPUs would be at 8x? From what I've read, SLI cards with one at 16x and 1 at 8x see very little performance hit provided the SLI bridge is in place, otherwise a 10-14% hit is seen. Wont the network controller and other SATA drives also use up lanes? 1 for Network and 4 for SATA drives, again, I think, so I'm going to see one GPU at 8x no matter what, unless I opt for a dual socket 2011 v3 and 80 lanes which seems .... excessive (ok, tempting too).
Does this make sense?
Oddly, I just ran GPUZ and it's reporting both cards are running in 8x right now, which is puzzling. Maybe I should look at dropping SLI and just getting one big new GeForce GTX 980 Ti ...
With the lanes issue, it seems the 5930k upgrade just isn't going to do that much to be worth it. I'm leaning toward either all in on a big new build or just do nothing but format drives and clean install.