Alright let's do some quoting
QPI bus goes in 40 PCI-E lanes come out (DMI is essentally a group of four modified PCI-E lanes). This is the very definition of a bridge, and the part doesn't do anything else.
Just read below. Different platforms.
They are very similar.
Which is exactly why I said and I quote "Some people confuse DMI-x4 transfer rate with PCI-E generation 1 transfer rate. Just because they share technology similarities and move at the same speeds doesn't mean they do the same things."
Not only that, but QPI is similar to both PCI-E and RAM as well. Obviously they behave differently and are used for different tasks, but should not be confused.
I am not confusing anything.
Obviously you are, but we are all entitled to our opinions. You are confusing my intentions with the comparison;
Which is why you have the X58 IOH...which is a glorified bridge chip.
Ummm...yeah its a northBRIDGE chip. It has to communicate with everything including the internal components within itself. Constantly running with no rest. The hottest chip on the board. It's definitely more than a glorified bridge. It's simply legacy tech. Intel switched it up with the X79 though, which was a terrific move on their part.
None of this has anything to do with anything, and isn't completely correct (there are more lane possibilities) regardless.
You have not addressed the issue I originally brought up. Your chart makes it look like QPI and PCI-E are separate I/O on the X58, they are not. All I/O reaching the CPU must pass through the IOH and the QPI. You cannot add QPI and PCI-E/DMI bandwidth, because all of it must ultimately fit into the QPI.
Yes I can and I did for a reason. If my chart looks like that then I'm sure most will see the diagrams for both the X58 and X79 at some point, that is if they want to know anything about the platforms. Now I see why you are so confused. As I said above I was clearly comparing both platforms based on the numbers.What you saying is obvious. Everyone with eyes can see the X58 diagram - PCI-E runs through the IOH and X79 runs directly to the CPU.
As I said in my review. They are using different platforms and I'm sure a lot of tech heads have seen the diagrams and how both of them work. I don't think it's going to confuse anyone that cares or knows about both of these platforms.
X79= 40 Lanes
X58= 32 Lanes
I'm not going into the obvious difference in the platforms layouts themselves. We all know X58 was before Intel connected the PCI-E directly to the CPU. If some don't then that's understandable....google the diagrams.Edited by Kana-Maru - 3/5/14 at 4:03am