{"product_id":"msi-pro-b840m-b-am5-matx-motherboard-ddr5-pcie-4-0","title":"MSI PRO B840M-B AM5 mATX Motherboard - DDR5, PCIe 4.0","description":"\u003cp\u003eThe MSI PRO B840M-B is a compact AM5 motherboard built for AMD Ryzen 9000, 8000 and 7000 series processors, with DDR5 support and PCIe 4.0 connectivity. It combines a solid power delivery system with practical features like dual M.2 slots, 2.5G LAN and front USB Type-C, making it suitable for builders who need performance without a full-size board.\u003c\/p\u003e\u003ch5\u003eWhy This Product\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDDR5 with up to 12% latency reduction\u003c\/strong\u003e — This board supports DDR5 memory at 8000+ MT\/s (overclocked) across two DIMM slots, paired with MSI's Memory Boost technology and dedicated SMT welding to maximise performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7+2+1 direct power design\u003c\/strong\u003e — Digital power phases with an 8-pin CPU connector and Load-Line Calibration keep voltage stable under load, improving headroom for demanding workloads and overclocking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCIe 4.0 and dual Gen 4 M.2 slots\u003c\/strong\u003e — One x16 PCIe 4.0 slot and two M.2 Gen4 x4 64Gbps slots deliver fast expansion for graphics and NVMe storage without compromise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5G LAN for stable networking\u003c\/strong\u003e — Realtek 8125 controller provides reliable wired connectivity suitable for multimedia work and competitive gaming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact mATX form factor\u003c\/strong\u003e — 244 × 226 mm footprint fits smaller cases while retaining four SATA ports, dual M.2 slots and seven USB 5Gbps ports for connectivity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch5\u003eAt a Glance\u003c\/h5\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eSocket\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eAMD AM5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eForm factor\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003emATX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eMemory support\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eDDR5 up to 8000+ MT\/s (OC), 128GB max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eStorage\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e2 × M.2 Gen4 x4, 4 × SATA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eExpansion\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1 × PCIe 4.0 x16, 1 × PCIe 3.0 x1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eUSB ports\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e7 × USB 5Gbps + 6 × USB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eNetworking\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e2.5G LAN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch5\u003eCompatibility\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003e✓ Fits AMD Ryzen 9000, 8000 and 7000 series processors on Socket AM5.\u003c\/li\u003e\n\u003cli\u003e✓ Works with mATX and smaller ATX cases; dimensions are 244 × 226 mm.\u003c\/li\u003e\n\u003cli\u003e✓ Accepts standard DDR5 UDIMMs up to 8000+ MT\/s (overclocked), 128GB maximum across two slots.\u003c\/li\u003e\n\u003cli\u003e✓ Dual BIOS protects against corruption during flashing and accidental short-circuit damage.\u003c\/li\u003e\n\u003cli\u003eNote: Display output requires processor graphics; no dedicated GPU VRAM needed, but built-in video only reaches 4K 60Hz over HDMI 2.1.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch5\u003eBest For \/ Trade-offs\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBudget-conscious Ryzen 9000 builds\u003c\/li\u003e\n\u003cli\u003eSmall-form-factor systems and compact cases\u003c\/li\u003e\n\u003cli\u003eDDR5 performance builds on a tighter budget than high-end boards\u003c\/li\u003e\n\u003cli\u003eBuilders who value dual M.2 and four SATA for mixed storage\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTrade-offs:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eFull-size ATX cases:\u003c\/b\u003e mATX design does not fill a standard ATX board area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMultiple graphics cards:\u003c\/b\u003e single x16 PCIe 4.0 slot and one x1 PCIe 3.0 slot limit expansion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eExtreme overclocking:\u003c\/b\u003e while stable, this is a mainstream board not targeted at advanced enthusiasts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWireless networking:\u003c\/b\u003e no Wi-Fi module; 2.5G LAN only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch5\u003eDescription\u003c\/h5\u003e\u003cp\u003ePRO B840M-B is engineered with many exclusive features of MSI, PCIe 4.0 M.2, EZ PCIe Clip II, 2.5G LAN, and Front Type-C, ready for the AMD Ryzen™ 9000 series processors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDIRECT 7+2+1 POWER DESIGN\u003c\/strong\u003e\u003cbr\u003eUnleash and sustain the maximum performance with a VRM design built with a total of 7+2+1 digital power phases. With an 8-pin power connector, PRO B840M-B is ready for the challenge of heavy-loading tasks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOPTIMIZED PCB SOLUTION\u003c\/strong\u003e\u003cbr\u003eThe PCB design has been optimized for higher bandwidth and faster transfer speeds, which is also beneficial for reliable circuit transmission.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e6 PCB layers\u003c\/li\u003e\n\u003cli\u003e2oz Thickened Copper\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMORE FOR PERFORMANCE\u003c\/strong\u003e\u003cbr\u003eWhat you set, is what you get. LLC makes sure your CPU voltage remains 100% stable under any load. This greatly improves stability when demanding more CPU performance.\u003c\/p\u003e\u003cp\u003eDual BIOS — Prevents potential short-circuit damage to the CPU and other critical components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDDR5 MEMORY SUPPORT WITH HIGH PERFORMANCE\u003c\/strong\u003e\u003cbr\u003eA huge step of DDR performance enhancement with the latest DDR5 memory. Combines with dedicated SMT welding process and MSI Memory Boost technology, PRO B840M-B is ready to deliver the world-class memory performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLatency Killer\u003c\/strong\u003e\u003cbr\u003eUP TO 12% Memory latency Reduction\u003c\/p\u003e\u003ch5\u003eSpecifications\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eBoard\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eMSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003ePRO B840M-B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eChipset\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eAMD B840\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eForm factor\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003emATX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e244 × 226 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eCPU support\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eAMD Ryzen 9000, 8000, 7000 series (Socket AM5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eMemory \u0026amp; Storage\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eMemory slots\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e2 × DDR5 UDIMM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eMemory speed\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e8000+ MT\/s (OC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eMaximum memory\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e128GB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eM.2 slots\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e2 × Gen4 x4 64Gbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eSATA ports\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e4 × 6Gbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eConnectivity \u0026amp; Ports\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003ePCIe slots\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1 × PCIe 4.0 x16, 1 × PCIe 3.0 x1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eUSB 5Gbps\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e7 ports (6 Type-A + 1 Type-C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eUSB 2.0\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e6 ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eLAN\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eRealtek 8125 2.5G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eAudio\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e8-channel (7.1) HD Audio with Audio Boost\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eVideo output\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eHDMI 2.1 (4K 60Hz), VGA (requires processor graphics)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003ePower \u0026amp; Features\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003ePower delivery\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e7+2+1 digital power phases, 8-pin CPU connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eVoltage regulation\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eLoad-Line Calibration (LLC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003ePCB layers\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e6 layers, 2oz thickened copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eBIOS\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eDual BIOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eOS support\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eWindows 11 64-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"MSI","offers":[{"title":"Default Title","offer_id":55697035231608,"sku":"MSI-7379","price":123.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/9119\/7218\/files\/49f33192b008d0a26d8107defeaa0dd9ee7f7a51.jpg?v=1792012125","url":"https:\/\/tech-syndicate.co.uk\/products\/msi-pro-b840m-b-am5-matx-motherboard-ddr5-pcie-4-0","provider":"Tech Syndicate","version":"1.0","type":"link"}