ASRock X79 Extreme4-M Pro Reviews

In comparison between the two ASRock boards, you get a lot more than $10 difference in terms of extras on the full size ATX X79 Extreme4 than the price difference suggests – more PCIe slots and space for add-on cards, more SATA 6 Gbps ports and more in the box in terms of cables and SLI connectors. Thanks to the extra space, the PCIe x16 slots are also more beneficial for airflow in dual GPU setups on the Extreme4. As a result, you may see the mATX Extreme4-M being sold with small discounts (e.g. currently $219 at time of writing, saving £6) to reflect the true difference. The Extreme4 also performs slightly better, especially in the memory overclock, though that may be down to the updated BIOS version which ASRock had not released for the Extreme4-M at the time of testing. Nevertheless, the Extreme4 would be my choice if I had to choose between these two boards for performance. If you absolutely need a mATX board, the Extreme4-M is not a bad choice. However, you will not be pushing any of the boards too hard on a CPU overclock. And for the noise conscious, you will definitely have to change that default CPU fan setting of a constant 100%.