ECS A990FXM-A Black Extreme
The 990FX looks very similar to its predecessor, the 890FX. There are no new innovations to the chipset to speak of but if you look closely, the a HyperTransport 3.0 processor link with previous 5.2 GT/s of peak interconnect bandwidth from the 890FX gets upgraded to version 3.1 and 6.4 GT/s of bandwidth on the 990FX. There are no changes to the silicon but perhaps the Hypertransport speed may be improved with the additional bandwidth. The Northbridge is a PCI Express 2.0 switch with 42 lanes of connectivity and the 990FX now supports Nvidia GeForce cards (though not all motherboard models will feature this). This is a welcome sight, seeing AMD users were pretty much stuck with AMD/ATI graphic cards for some time.
The SB950 offers additional PCI express lanes and all 6 of the serial ATA ports use 6Gbps of connectivity. The USB ports still feature USB 2.0 as the next generation has not been embraced, seeing as the I/O blocks have not changed either. Folks, there really is no cutting edge differences on both the 990FX and SB950.