Hello mates i got some inside files from ATI chipset, we made lots of noise a while back when we leaked the roadmaps from AMD/ATI

RD790

1 It has HTX support.

2 PCI-E 2.0 compatible, 52 PCI-E lines

3 HTT 3.0 compatible

4 Internet Teaming, Dual Gigabit Ethernet

5 The RD790 Chipset has its own cache, it is has 16KB of it, not much info out of the files i got but, should give more bandwidth and also lower latencies

Source: Chilehardware