880G and 890GX differences

880G is integrated with GPU--HD 4250, which has a default operating frequency of 560MHz, while 890GX integrates GPU--HD 4290 with the default operating frequency of 700MHz.

890GX can support a x16 or two X8 pci-e 2.0 slots, while 785G and 880G support only one x16 slot, theoretically, if you want to achieve a firefight need to "lend" 4 from the South Bridge or other ways to x16 decomposition.

880G with the South Bridge is SB850 version of the--sb810, and SB850 difference is less support for SATA 6Gbps, and 890GX with the South Bridge is SB850.

In addition, according to the original plan of AMD, 880G with the SB810 Bridge chip, but the most exposed products are SB850 chips (allegedly SB810 for some reason delay), so the current exposure of 880G support SATA3 standard.