{"product_id":"asus-prime-b840m-r-amd-b840-matx-motherboard-ddr5-am5","title":"ASUS PRIME B840M-R AMD B840 mATX Motherboard DDR5 AM5","description":"\u003cp\u003eThe ASUS PRIME B840M-R is a micro-ATX motherboard built for AMD Ryzen 9000, 8000 and 7000 series processors. It pairs DDR5 support with PCIe 4.0 connectivity and power-delivery tuning features designed for both overclocking enthusiasts and builders wanting a capable, feature-rich platform without the size of a full-size board.\u003c\/p\u003e\u003ch5\u003eWhy This Product\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDDR5 overclocking with EXPO support\u003c\/strong\u003e — This board supports up to 7200+ MT\/s with Ryzen 9000 and 7000 series CPUs, plus extensive EXPO profiles and AEMP for fine-tuned memory performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual M.2 slots with fast PCIe 4.0\u003c\/strong\u003e — The primary M.2 slot runs at PCIe 4.0 for 64 Gbps transfer speeds, enabling quick boot and load times; a secondary PCIe 3.0 slot adds storage flexibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6+2+1 phase power design\u003c\/strong\u003e — Discrete MOSFETs and a Digi+ VRM deliver stable, efficient power to the CPU with real-time voltage control and auto frequency switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtensive USB and connectivity\u003c\/strong\u003e — Four USB 5Gbps rear ports, front USB Type-C header, Ethernet, DisplayPort and HDMI provide ample I\/O for peripherals and displays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal management built in\u003c\/strong\u003e — Onboard chipset heatsink, hybrid fan headers with auto-detection for PWM or DC fans, and 2oz copper PCB design help keep temperatures stable under load.\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%;\"\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%;\"\u003eSocket\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eAMD Socket 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%;\"\u003eMemory\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eDDR5, up to 128GB (2 DIMM)\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 x M.2 (PCIe 4.0 + PCIe 3.0), 4 x 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%;\"\u003eForm Factor\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eMicro-ATX\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%;\"\u003ePower Phases\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e6+2+1 phase with MOSFETs\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%;\"\u003eEthernet\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1 x 1Gb with LANGuard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch5\u003eCompatibility\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003e✓ Supports AMD Ryzen 9000, 8000 and 7000 series processors in Socket AM5, up to 120W TDP.\u003c\/li\u003e\n\u003cli\u003e✓ Accepts DDR5 memory up to 128GB across two DIMM slots with full EXPO and AEMP support.\u003c\/li\u003e\n\u003cli\u003e✓ Micro-ATX form factor fits standard mid-tower cases; dimensions 23.6 cm × 22.9 cm.\u003c\/li\u003e\n\u003cli\u003e✓ Integrated graphics output via DisplayPort 1.4 (8K@30Hz) and HDMI 2.1 (4K@60Hz) on processors with iGPU.\u003c\/li\u003e\n\u003cli\u003eNote: PCIe x16 slot runs at x16 with Ryzen 9000 and 7000, but x8\/x4 with Ryzen 8000 series.\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 builders moving to Ryzen 9000 who want DDR5 and overclocking room without paying for larger boards.\u003c\/li\u003e\n\u003cli\u003eCompact builds that prioritise performance and feature density in a micro-ATX footprint.\u003c\/li\u003e\n\u003cli\u003eOverclockers exploring DDR5 performance via EXPO and AEFI tuning with stable power delivery.\u003c\/li\u003e\n\u003cli\u003eUsers planning AI-ready systems with multiple storage drives and USB peripherals.\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\u003eHigh-end workstations\u003c\/b\u003e requiring 10Gb Ethernet or more than 2 M.2 slots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBuilders needing full-size boards\u003c\/b\u003e for extensive expansion or maximum RAM slot count.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLegacy CPU users\u003c\/b\u003e — this board requires Socket AM5 Ryzen 9000, 8000 or 7000 series only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch5\u003eDescription\u003c\/h5\u003e\u003cp\u003eASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-R motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It's designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.\u003c\/p\u003e\u003cp\u003ePRIME B840M-R features 6+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use. 2oz copper PCB design can draw heat away from critical components to keep the optimal operating temperatures. The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings.\u003c\/p\u003e\u003cp\u003eFor those looking to surpass stock DDR5 speeds, the PRIME B840M-R offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.\u003c\/p\u003e\u003cp\u003ePRIME B840M-R offers a total of two M.2 slots, including one that supports data-transfer speeds of up to 64Gbps via PCIe 4.0, and one that supports PCIe 3.0. This enables quicker boot-up and app load times with OS or application drives.\u003c\/p\u003e\u003cp\u003eThe PRIME B840M-R motherboard is engineered with onboard chipset heatsink and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads. Each onboard header supports auto-detection of PWM or DC fans.\u003c\/p\u003e\u003cp\u003eNumerous USB ports support high-end rigs loaded with peripherals, including four rear USB 5Gbps Type-A ports and a front USB 5Gbps Type-C® connector for transmission speeds of up to 5Gbps.\u003c\/p\u003e\u003ch5\u003eSpecifications\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eGeneral\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;\"\u003eASUS\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;\"\u003ePRIME B840M-R\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;\"\u003eMicro-ATX (23.6 cm × 22.9 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eProcessor Support\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%;\"\u003eSocket\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eAMD Socket 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%;\"\u003eCompatible CPUs\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eAMD Ryzen 9000, 8000 and 7000 series\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 Power Limit\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUp to 120W\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 x DIMM (DDR5)\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%;\"\u003eMax 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%;\"\u003eMemory Speeds (Ryzen 9000\/7000)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUp to 7200+ MT\/s (OC) with EXPO\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 Speeds (Ryzen 8000)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUp to 7600+ MT\/s (OC) with EXPO\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 Slot 1\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003ePCIe 4.0 x4 (up to 64 Gbps) — type 2280\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 Slot 2\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003ePCIe 3.0 x4 — type 2242\/2260\/2280\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 x SATA 6Gb\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eConnectivity \u0026amp; I\/O\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%;\"\u003eRear USB Ports\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e4 x USB 5Gbps (Type-A), 2 x USB 2.0 (Type-A)\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%;\"\u003eFront USB Headers\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1 x USB 5Gbps Type-C, 1 x USB 5Gbps header (2 ports), 2 x USB 2.0 headers (4 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%;\"\u003eVideo Output\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1 x DisplayPort 1.4 (8K@30Hz), 1 x HDMI 2.1 (4K@60Hz)\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%;\"\u003eEthernet\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1 x 1Gb Realtek with LANGuard\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;\"\u003e3 x audio jacks\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%;\"\u003eLegacy I\/O\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1 x PS\/2 keyboard\/mouse combo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eExpansion \u0026amp; Power\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 x PCIe 4.0 x16 (x16 on 9000\/7000, x8\/x4 on 8000), 1 x 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%;\"\u003ePower Design\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e6+2+1 phase with discrete MOSFETs, Digi+ VRM\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%;\"\u003eMain Power\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1 x 24-pin connector, 1 x 8-pin +12V CPU\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%;\"\u003eFan Headers\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1 x 4-pin CPU, 2 x 4-pin Chassis (hybrid, auto-detect PWM\/DC)\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%;\"\u003eRGB Headers\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eAddressable RGB Gen 2 headers with Aura Sync\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eProtection \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%;\"\u003eASUS 5X Protection\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eDigi+ VRM, LANGuard, Overvoltage protection, SafeSlot Core+, Stainless-steel back I\/O\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%;\"\u003eASUS Q-Design\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eQ-Dashboard, Q-DIMM, Q-LED (CPU\/DRAM\/VGA\/Boot Device), Q-Slot\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%;\"\u003eThermal Design\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eOnboard chipset heatsink, 2oz copper PCB\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%;\"\u003eRAID Support\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eRAID 0\/1\/5\/10 via AMD RAIDXpert2\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%;\"\u003eOverclocking\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eAMD EXPO, AEMP, extensive UEFI tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"ASUS","offers":[{"title":"Default Title","offer_id":55688963260792,"sku":"ASU-2752","price":109.36,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/9119\/7218\/files\/pd_11e0d22c-0660-430e-bc80-0774a6e3107c.webp?v=1791161076","url":"https:\/\/tech-syndicate.co.uk\/products\/asus-prime-b840m-r-amd-b840-matx-motherboard-ddr5-am5","provider":"Tech Syndicate","version":"1.0","type":"link"}