so I am a computer hardware technician so I know what I need I just am not sure what I get with a motherboard, I planned on pairing this with AMD Athlon II X4 641 Quad-Core, but I know I need north and south bridge compatibility and I wasn't sure how to find out if it is included and or compatible?

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If you going with Athlon II X4 651k (FM1 socket) you have two chipsets (i.e. northbridges) to choose from A55 (Hudson D2), and the A75 (Hudson D3). It all comes down to supportability of SATA 2/3 and USB 2/3 devices. The Hudson D2 supports the following natively 6 SATA II's, 14 USB 2.0 devices, and 2 USB 1.1 devices. The Hudson D3 supports the following natively 6 SATA III's, 4 USB 3.0 devices, 10 USB 2.0 devices and 2 USB 1.1 devices. The southbridge in the A-Series CPU are the same across the line. Now in most FM1 board include a separate chipset support for SATA 2/3 and USB 3.0 support so backwards capability is a moot point.

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