Chipset | A68H | A88X | A320 | B350 | X370 | X399 | |||
USB 2.0 | 10 | 10 | 6 | 6 | 6 | 6 | |||
USB 3.0/3.1 | 2 | 4 | 3 | 4 | 8 | 16 | |||
SATA | 4 | 8 | 2 | 2 | 4 | 12 | |||
Number of PCI Express lanes | 4 (+16 in APU) | 4 (+16 in APU) | 4 (+20 in CPU Ryzen / 10 in APU) | 6 (+20 in CPU Ryzen / 10 in APU) | 8 (+20 in CPU Ryzen / 10 in APU) | 4 (+60 in CPU) | |||
SATA Express (2x SATA III or 2x PCIe 3.0) | - | - | 2 | 2 | 2 | 2 | |||
Multiple graphics cards | No | Yes | No | CrossFire only | Yes | Yes | |||
Processor overclocking | No | Yes | No | Yes | Yes | Yes |
* This is a chipset specification; the connector equipment of a particular motherboard may vary. APU (Accelerated Processing Unit) is a processor with an integrated graphics unit. APUs for the A68H/A88X chipset use only second generation PCI-Express; other processors/chipsets work with the third generation.
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