MSI sends out word that it has issued a cryptocurrency mining BIOS for several of its Z170 and Z270 motherboards. This new BIOS version fixes an issue that resulted in problems with efficiency allocating resources for systems with six GPUs installed. Download links and installation instructions can be found at MSI.
With the rise of bitcoin/ethereum mining, AMD graphics cards once again became one of the top-selling graphics card series in the market. However, it is relatively harder to acquire the economic mining motherboard due to the fact that Intel slowly discontinued the H81 and B85 chipset, and this caused the shortage of mining motherboards in the market. Users found a new way out along with the release of the 100-series chipset, yet many of them found that when they attached 6 AMD graphics cards on the 100-series motherboard, even though the board successfully recognized 6 graphics cards, there were always exclamation marks on 3 or 4 graphics cards within device manager in the OS. And, of course, the cards with exclamation marks would not function properly during mining. MSI consistently heard such inquiries from customers.
Hence, MSI does a series of tests for its products and picked a couple motherboards including Z170-A PRO, Z170A SLI PLUS, Z170 KRAIT GAMING, Z170A KRAIT GAMING, Z170A KRAIT GAMING 3X, Z270-A PRO, H270-A PRO which fit the purpose of mining. There are few things that need to be done before mining and it will be explained in the paragraph below using MSI Z270-A PRO as example.
MSI has patched solutions especially for PCIE device recognition on the boards which are mentioned above. The “above 4G decoding” option is added to BIOS which allows the motherboard to efficiently allocate resources for all 6 graphics cards.