Finally, the I/O section, from left to right we have:
- PS2 keyboard
- PS2 Mouse
- 1x Large Air Vent
- Firewire
- 6x USB 2
- Dual Gigabit LAN
As you can see from the chart below, what used to be the North Bridge is now the IOH (In/Out hub) and that has two primary functions, the first is to connect the
PCI-E bus to the processor and there are 36 lanes available (each at 500MB/sec) in a variety of configurations - the most common is going to be 16x/16/4x and that will allow for SLI/Crossfire and maybe a Physics card, although it should be noted that other, on-board features that use the
PCI-E bus will eat into this bandwidth.
The second of the primary functions of the IOH is to connect the South Bridge (ICH10R) to the CPU at speeds of up to 2GB/sec.
There are twelve possible USB 2 connections as well as dual Gigabit LAN.
We also have six
SATA II ports, Intel Matrix Storage Technology (
RAID) and
Intel's Turbo Memory feature with user pinning.
The main link between the IOH and the processor is now called the QPI which is Intel's Quick Path Interconnect Architechture and that will transfer data at a massive 25.6GB/sec.
Another groundbreaking feature of QPI is that each processor now has it's own dedicated scalable memory instead of competing for it via the
FSB and memory controller. Should the processor need to access the memory of one of the other processors, it can access it directly via the QPI bus resulting in much less bottlenecking and faster number crunching.
I want to give a special mention to the CPU socket area as I feel this has been particularly well designed. If you take a look at any of the other manufacturers boards around the CPU socket, it's generally a busy, cluttered place with caps everywhere - Sub-Zeroists take a look at this...
With the exception of two capacitors and two jumpers, it's completely clear and flat!
Click Image For Full Size.
Finally, the back of the board - not something that I would bother with normally, but I want to show you the backplates for the PWM and
NB area.
The CPU has the standard LGA1366 back plate.
All the heatsinks are fixed in place with M3 screws and nuts - No plastic spring clips here.

A word of warning though, DFI use a kind of glue/thread locking stuff on the nuts and bolts and it can be a bit tricky to remove, so be very careful that you don't slip and scratch the board.
Continued below...