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Best-value AM5 motherboards under £300 right now

The AM5 motherboards under £300 in stock on Amazon.co.uk, best value first. This list is generated from price, popularity and the specifications each Amazon listing states, not from hands-on testing.

Up to this budget the list takes in upper-range B850 and B650E boards and the entry X870 models. AMD requires USB4, a PCIe 5.0 graphics slot and a PCIe 5.0 M.2 slot on every X870 board, and 5 GbE networking and WiFi 7 turn up regularly. The extra money mostly buys connectivity and heavier power delivery rather than speed in games.

286 boards in stock in this band, the top 20 shown · prices last checked 5 Nov 2026, 12:23 GMT

AM5 motherboards under £300, best value first
BoardPriceSavingWarehouseBuy
#1 ASUS ROG Strix B850-F Gaming WiFi AMD motherboard 90-day lowAM5 · B850 · ATX · DDR5 · WiFi · first available Jan 2025 (1 yr 9 mo old) · RRP £375.76WiFi 7 · 2.5GbE · 4× M.2 · PCIe 5.0 · BIOS flashbackWhy it ranks here: in stock · Amazon sales rank #2,685 · 20% under its usual 90-day price · WiFi 7 · 2.5GbE LAN · 4 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · BIOS flashback · first available Jan 2025 (score 75.6 of 100)
£207.00as of 20% less20% under its 90-day usual—Amazon
#2 ASUS EX-B850M-V7 AMD Micro-ATX MotherboardAM5 · B850 · Micro-ATX · DDR5 · first available Mar 2026 (8 mo old) · RRP £200.995GbE · 2× M.2 · PCIe 5.0 · USB-C 10GbpsWhy it ranks here: in stock · Amazon sales rank #1,641 · 28% under its usual 90-day price · 5GbE LAN · 2 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available Mar 2026 (score 64.8 of 100)
£94.95as of —28% under its 90-day usual—Amazon
#3 ASUS B850M AYW GAMING OC WIFI7 W Lowest we've recordedAM5 · B850 · Micro-ATX · DDR5 · WiFi · first available Mar 2026 (8 mo old) · RRP £316.99WiFi 7 · 2.5GbE · 3× M.2 · BIOS flashback · USB-C 20GbpsWhy it ranks here: in stock · Amazon sales rank #34,628 · 35% under its usual 90-day price · WiFi 7 · 2.5GbE LAN · 3 M.2 slots · BIOS flashback · first available Mar 2026 (score 64.3 of 100)
£155.38as of —35% under its 90-day usual—Amazon
#4 ASUS B850 MAX Gaming WiFi WAM5 · B850 · ATX · DDR5 · WiFi · first available Nov 2025 (11 mo old)WiFi 6E · 2.5GbE · 3× M.2 · PCIe 5.0 · BIOS flashbackWhy it ranks here: in stock · 31% under its usual 90-day price · WiFi 6E · 2.5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · BIOS flashback · first available Nov 2025 (score 64.0 of 100)
£198.93as of —31% under its 90-day usual—Amazon
#5 ASUS ROG Strix X870-I Gaming WiFi 90-day lowAM5 · X870 · Mini-ITX · DDR5 · WiFi · first available Sep 2024 (2 yr 1 mo old)WiFi 7 · 2.5GbE · 2× M.2 · PCIe 5.0 · USB4Why it ranks here: in stock · Amazon sales rank #78,428 · 27% under its usual 90-day price · WiFi 7 · 2.5GbE LAN · 2 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · BIOS flashback · first available Sep 2024 (score 60.3 of 100)
£189.99as of 16% less27% under its 90-day usual—Amazon
#6 MSI MAG B850M MORTAR WIFI Motherboard 30-day lowAM5 · B850 · Micro-ATX · DDR5 · WiFi · first available May 2025 (1 yr 6 mo old) · RRP £209.99WiFi 7 · 5GbE · 3× M.2 · PCIe 5.0 · 4 RAM slotsWhy it ranks here: in stock · Amazon sales rank #2,225 · 6% under its usual 90-day price · WiFi 7 · 5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available May 2025 (score 57.1 of 100)
£169.86as of 15% less6% under its 90-day usual£144.39Amazon
#7 GIGABYTE X870 AORUS Elite X3D AMD AM5 ATX MotherboardAM5 · X870 · ATX · DDR5 · WiFi · first available Feb 2026 (8 mo old)WiFi 7 · 5GbE · 4× M.2 · PCIe 5.0 · USB4Why it ranks here: in stock · Amazon sales rank #19,746 · 2% under its usual 90-day price · WiFi 7 · 5GbE LAN · 4 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · BIOS flashback · first available Feb 2026 (score 56.7 of 100)
£250.93as of 3% less2% under its 90-day usual—Amazon
#8 ASUS X870 MAX Gaming WIFI7W Motherboard Socket AMD AM5AM5 · X870 · ATX · DDR5 · WiFi · first available Apr 2025 (1 yr 6 mo old) · RRP £359.99WiFi 7 · 2.5GbE · PCIe 5.0 · USB4 · USB-C 40GbpsWhy it ranks here: in stock · Amazon sales rank #6,777 · 13% under its usual 90-day price · WiFi 7 · 2.5GbE LAN · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available Apr 2025 (score 56.3 of 100)
£199.99as of —13% under its 90-day usual—Amazon
#9 ASUS ROG Strix B850-A Gaming WiFi AMD ATX motherboardAM5 · B850 · ATX · DDR5 · WiFi · first available Jan 2025 (1 yr 9 mo old) · RRP £349.96WiFi 7 · 2.5GbE · 4× M.2 · PCIe 5.0 · BIOS flashbackWhy it ranks here: in stock · Amazon sales rank #2,685 · WiFi 7 · 2.5GbE LAN · 4 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · BIOS flashback · first available Jan 2025 (score 55.6 of 100)
£199.99as of 22% less£155.24Amazon
#10 MSI PRO B850-S EVO WIFI Motherboard Lowest we've recordedAM5 · B850 · ATX · DDR5 · WiFi · first available Mar 2026 (7 mo old) · RRP £169.99WiFi 7 · 5GbE · 3× M.2 · PCIe 5.0 · 4 RAM slotsWhy it ranks here: in stock · Amazon sales rank #23,732 · 7% under its usual 90-day price · WiFi 7 · 5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available Mar 2026 (score 55.2 of 100)
£139.99as of 7% less7% under its 90-day usual—Amazon
#11 TUF Gaming B850M-PLUS WIFI7 AMD B850 mATX Motherboard 30-day lowAM5 · B850 · Micro-ATX · DDR5 · WiFi · first available Oct 2025 (1 yr old)WiFi 7 · 2.5GbE · 3× M.2 · PCIe 5.0 · USB-C 20GbpsWhy it ranks here: in stock · Amazon sales rank #2,590 · 5% under its usual 90-day price · WiFi 7 · 2.5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available Oct 2025 (score 54.7 of 100)
£214.75as of —5% under its 90-day usual—Amazon
#12 MAG B850 TOMAHAWK MAX WIFI II Lowest we've recordedAM5 · B850 · ATX · DDR5 · WiFi · first available Mar 2026 (7 mo old) · RRP £259.99WiFi 7 · 5GbE · 3× M.2 · PCIe 5.0 · 4 RAM slotsWhy it ranks here: in stock · Amazon sales rank #1,989 · WiFi 7 · 5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available Mar 2026 (score 54.3 of 100)
£229.99as of ——Amazon
#13 ASUS TUF GAMING B850M-PLUS WIFI AMD mATX motherboardAM5 · B850 · Micro-ATX · DDR5 · WiFi · first available Jan 2025 (1 yr 9 mo old) · RRP £282.75WiFi 6E · 2.5GbE · 3× M.2 · PCIe 5.0 · BIOS flashbackWhy it ranks here: in stock · Amazon sales rank #1,416 · 1% under its usual 90-day price · WiFi 6E · 2.5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · BIOS flashback · first available Jan 2025 (score 54.2 of 100)
£195.00as of —1% under its 90-day usual—Amazon
#14 ASUS TUF GAMING B850-PLUS WIFI AMD ATX motherboardAM5 · B850 · ATX · DDR5 · WiFi · first available Jan 2025 (1 yr 9 mo old) · RRP £308.42WiFi 7 · 2.5GbE · 3× M.2 · PCIe 5.0 · BIOS flashbackWhy it ranks here: in stock · Amazon sales rank #2,590 · WiFi 7 · 2.5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · BIOS flashback · first available Jan 2025 (score 53.7 of 100)
£188.38as of 22% less£146.60Amazon
#15 MSI X870E GAMING PLUS WIFI Motherboard 30-day lowAM5 · X870E · ATX · DDR5 · WiFi · first available May 2025 (1 yr 6 mo old) · RRP £289.99WiFi 7 · 5GbE · 3× M.2 · PCIe 5.0 · USB4Why it ranks here: in stock · Amazon sales rank #2,901 · 3% under its usual 90-day price · WiFi 7 · 5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available May 2025 (score 53.4 of 100)
£184.99as of 10% less3% under its 90-day usual£167.38Amazon
#16 MSI MAG X870E GAMING MAX WIFI MotherboardAM5 · X870E · ATX · DDR5 · WiFi · first available Jan 2026 (9 mo old) · RRP £249.99WiFi 7 · 5GbE · 3× M.2 · PCIe 5.0 · USB4Why it ranks here: in stock · Amazon sales rank #2,901 · WiFi 7 · 5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available Jan 2026 (score 53.4 of 100)
£209.99as of ——Amazon
#17 MSI PRO X870E-S EVO WIFI MotherboardAM5 · X870E · ATX · DDR5 · WiFi · first available Mar 2026 (8 mo old) · RRP £219.99WiFi 7 · 5GbE · 3× M.2 · PCIe 5.0 · USB4Why it ranks here: in stock · Amazon sales rank #2,901 · WiFi 7 · 5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available Mar 2026 (score 53.4 of 100)
£219.98as of ——Amazon
#18 Gigabyte B850 GAMING X WIFI6E MotherboardAM5 · B850 · ATX · DDR5 · WiFi · first available Jan 2025 (1 yr 9 mo old) · RRP £176.99WiFi 7 · 2.5GbE · 2× M.2 · PCIe 5.0 · 4 RAM slotsWhy it ranks here: in stock · Amazon sales rank #1,464 · WiFi 7 · 2.5GbE LAN · 2 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · BIOS flashback · first available Jan 2025 (score 53.1 of 100)
£159.99as of ——Amazon
#19 Gigabyte B850 AORUS ELITE WIFI7 MotherboardAM5 · B850 · ATX · DDR5 · WiFi · first available Jan 2025 (1 yr 9 mo old) · RRP £239.99WiFi 7 · 2.5GbE · 2× M.2 · PCIe 5.0 · 4 RAM slotsWhy it ranks here: in stock · Amazon sales rank #1,464 · WiFi 7 · 2.5GbE LAN · 2 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · BIOS flashback · first available Jan 2025 (score 53.1 of 100)
£205.99as of 19% less£167.32Amazon
#20 MSI MAG X870E Gaming Plus MAX WiFi Motherboard Lowest we've recordedAM5 · X870E · ATX · DDR5 · WiFi · first available Feb 2026 (8 mo old)WiFi 7 · 5GbE · 3× M.2 · PCIe 5.0 · USB4Why it ranks here: in stock · Amazon sales rank #194,843 · 10% under its usual 90-day price · WiFi 7 · 5GbE LAN · 3 M.2 slots · PCIe 5.0 graphics slot · PCIe 5.0 M.2 · first available Feb 2026 (score 53.1 of 100)
£245.47as of —10% under its 90-day usual—Amazon

Tick two to four boards, then compare them side by side.

How this list is made

Nobody at motherboarddeals.co.uk has tested these boards. The list is generated from the data we hold: the price on Amazon.co.uk, how well the board sells, and the specifications its Amazon listing states. A board has to be in stock and under the budget to appear. It then scores points for being in stock (10), for its Amazon sales rank (up to 30, on a sliding scale), for selling below its own usual price of the last 90 days (one point per percent, up to 20, once we hold two weeks of its price history), for the features its listing states (up to 30: WiFi generation, 2.5 GbE or faster networking, the number of M.2 slots, PCIe 5.0 and a BIOS flashback button) and for how recently it was first available (up to 10). The line under each board names the factors that counted for it. A feature the listing does not state scores nothing, so a good board with a thin listing can rank lower than it deserves, and CPU and board bundles are left out. The order is recalculated whenever prices are checked, roughly every six hours; nobody can pay to move up it. How we track motherboard prices explains where the numbers come from.

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