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B840 motherboard prices

The lowest listed unit price is $139.99 per part. The median is $208.99 per part, across 13 ranked Newegg listings.

Updated Sep 28, 2026. US dollars; tax and shipping excluded.

Compare B840 motherboard prices

13 ranked products · Newegg US · Updated (7 hours ago).

Listings are on Newegg; the marketplace seller is not supplied. Prices exclude tax and shipping. Availability can change at checkout. Newegg links are affiliate links; a purchase may earn a commission. Affiliate status does not affect order.

Filter by model, manufacturer, condition or specification

The platform control narrows RAM by generation and CPUs or boards by stated socket. Check the exact board's module type and support list; this is not a complete fit verdict.

Generation, speed, latency, socket, interface and form factor can be searched together. Listing-title specifications are labelled on each row; they do not establish fit. “New” means the listing is not labelled used or refurbished. A missing warranty is unknown.

Showing 13 of 13 products.

Current unit prices · Updated Sep 28, 2026
Product and specificationsNewegg priceUnit pricePrice referenceCondition and availability
GIGABYTE B840 EAGLE WIFI6E AMD AM5 ATX Motherboard, Support Ryzen 9000/8000/7000 Series, 8+2+2 Power Phase, DDR5, 3x M.2, PCIe 4.0, USB-C 3.2 Gen...DDR5Specifications from the Newegg listing$139.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$139.99 / partBest listed value · better unit price than 100% of 13 in the same condition group on this pageLaunch reference not recordedListing reference $149.99 · 6.7% lower; not a recorded previous salenew · in-stockWarranty: not recorded
MSI B840 GAMING PLUS WIFI Motherboard, ATX - Supports AMD Ryzen 9000 / 8000 / 7000 Processors, AM5 - DDR5 Memory Boost 8000+ MT/s (OC), PCIe 4.0...DDR5Specifications from the Newegg listing$169.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$169.99 / partHigher value · better unit price than 92% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
ASUS PRIME B840M-A WIFI-CSM AMD AM5 B840 mATX motherboard, Advanced AI Ready, DDR5, PCIe 4.0 Ready, three M.2 slots, Wi-Fi 6E, 2.5Gb LAN,...DDR5Specifications from the Newegg listing$183.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$183.99 / partHigher value · better unit price than 83% of 13 in the same condition group on this pageLaunch reference not recordedListing reference $186.99 · 1.6% lower; not a recorded previous salenew · in-stockWarranty: not recorded
MSI PRO B840-P WIFI Motherboard, ATX - Supports AMD Ryzen 9000 / 8000 / 7000 Processors, AM5 - DDR5 Memory Boost (8000+ MT/s OC), PCIe 4.0 x16, M.2...DDR5Specifications from the Newegg listing$185.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$185.99 / partHigher value · better unit price than 75% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
Asus Prime B840-PLUS WIFI-CSM Gaming Desktop Motherboard - AMD B840 Chipset - Socket AM5 - ATX - Ryzen 9, Ryzen 7 Processor Supported - 192 GB...Specifications from the Newegg listing$199.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$199.99 / partMiddle range · better unit price than 67% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
ASUS PRIME B840M-A WIFI - Motherboard - micro ATX - Socket AM5 - AMD B840 Chipset - USB-C 3.2 Gen 1, USB 3.2 Gen 1 - 2.5Specifications from the Newegg listing$204.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$204.99 / partMiddle range · better unit price than 58% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
ASUS PRIME B840-PLUS WIFI AMD AM5 B840 ATX motherboard, Advanced AI Ready, DDR5, PCIe 4.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DisplayPort, HDMI, USB...DDR5Specifications from the Newegg listing$208.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$208.99 / partMiddle range · better unit price than 50% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
ASUS PRIME B840-PLUS WIFI - Motherboard - ATX - Socket AM5 - AMD B840 Chipset - USB-C 3.2 Gen 1, USB 3.2 Gen 1 - 2.5 GigSpecifications from the Newegg listing$245.16 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$245.16 / partMiddle range · better unit price than 42% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
ASUS PRIME B840M-A AMD B840(AM5 Socket) microATX motherboard, DDR5, PCle 4.0 Ready, Realtek 2.5Gb wired LAN card, Dual DisplayPort, Rear/Front USB...DDR5Specifications from the Newegg listing$249.95 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$249.95 / partMiddle range · better unit price than 33% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
MSI B840M GAMING WIFI6E motherboard supports CPUs 9700X/9600X/7500F (AMD B840/AM5 interface)Specifications from the Newegg listing$249.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$249.99 / partMiddle range · better unit price than 25% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
ASUS PRIME B840M-A-CSM - Motherboard - micro ATX - Socket AM5 - AMD B840 Chipset - USB-C 3.2 Gen 1, USB 3.2 Gen 1 - 2.5Specifications from the Newegg listing$253.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$253.99 / partLower value · better unit price than 17% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
MSI B840M GAMING PLUS WIFI6E motherboard supports CPUs 9700X/9600X/7500F (AMD B840/AM5 interface)Specifications from the Newegg listing$259.99 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$259.99 / partLower value · better unit price than 8% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded
ASUS PRIME B840M-A WIFI AMD B840 (AM5 Socket) micro-ATX motherboard, DDR5, PCIe 4.0 Ready, three M.2 slots, Wi-Fi 6E,Realtek 2.5Gb Ethernet, Dual...DDR5Specifications from the Newegg listing$267.85 · View at Newegg (affiliate)Updated Sep 28, 2026 · 7h old$267.85 / partLower value · better unit price than 0% of 13 in the same condition group on this pageLaunch reference not recordednew · in-stockWarranty: not recorded

B840 motherboard memory and processor support

Published platform rules · Updated Jul 26, 2026
SocketAM5
Processor familiesAMD Ryzen 7000, AMD Ryzen 8000, AMD Ryzen 9000
Memory generationDDR5

AMD states that AM5 600-series and 800-series motherboards support AM5 Ryzen 7000, 8000, and 9000 processors, with a possible BIOS update on 600-series boards.

A matching socket and memory generation are only part of the check. The exact board's BIOS, module type, capacity and memory-support list still matter. The listings below are filtered by generation, not a claim that every kit works with every board.

Check a selected buildMemory for AM5A620 motherboard pricesB650 motherboard pricesB650E motherboard pricesX670 motherboard pricesX670E motherboard pricesB850 motherboard pricesX870 motherboard pricesX870E motherboard prices

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