| £173.99as of | — | — | Amazon |
 ASUS PRIME B850-PLUS-CSMAM5 · B850 · ATX · DDR5 · WiFi · first available Mar 2025 (1 yr 7 mo old) · RRP £161.99WiFi 6E · 2.5GbE · 3× M.2 · USB-C 10Gbps | £161.99as of | — | — | Amazon |
 Asus B850 MAX GAMING WIFI WAM5 · B850 · ATX · DDR5 · WiFi · first available Mar 2025 (1 yr 7 mo old) · RRP £195.99WiFi 6E · 2.5GbE · 3× M.2 · 4 RAM slots · USB-C 10Gbps | £194.99as of | — | — | Amazon |
 ASUS PRIME B850M-A-CSMAM5 · B850 · Micro-ATX · DDR5 · first available Apr 2025 (1 yr 7 mo old) · RRP £377.992.5GbE · 3× M.2 · BIOS flashback · USB-C 5Gbps | £144.98as of | — | — | Amazon |
| £134.99as of | 11% less10% under its 90-day usual | £119.63 | Amazon |
| £149.47as of | 14% less1% under its 90-day usual | £129.03 | Amazon |
| £189.95as of | — | — | Amazon |
 MB ASRock AMD AM5 B850M Pro RSAM5 · B850 · Micro-ATX · DDR5 · first available Jan 2025 (1 yr 9 mo old) · RRP £247.991× M.2 · PCIe 5.0 · 4 RAM slots · BIOS flashback · 4× SATA | £122.40as of | — | — | Amazon |
| £150.14as of | — | — | Amazon |
| £119.99as of | — | — | Amazon |
 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 slots | £139.99as of | 7% less7% under its 90-day usual | — | Amazon |
| £234.98as of | — | — | Amazon |
| £179.99as of | — | — | Amazon |
| £169.99as of | — | — | Amazon |
| £272.99as of | — | — | Amazon |
| £164.99as of | — | — | Amazon |
| £147.92as of | — | — | Amazon |
| £185.88as of | — | — | Amazon |
| £151.20as of | — | — | Amazon |
 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 20Gbps | £155.38as of | —35% under its 90-day usual | — | Amazon |
| £104.00as of | 32% less10% under its 90-day usual | £71.02 | Amazon |
| £259.99as of | — | — | Amazon |
| £108.99as of | — | — | Amazon |
 Asus TUF GAMING B850-BTF WIFI WAM5 · B850 · ATX · DDR5 · WiFi · first available Apr 2025 (1 yr 6 mo old) · RRP £261.99WiFi 7 · 2.5GbE · 3× M.2 · 4 RAM slots · USB-C 20Gbps | £205.99as of | — | — | Amazon |
| £183.98as of | —1% under its 90-day usual | — | Amazon |
| £190.51as of | — | — | Amazon |
| £220.20as of | 12% less12% under its 90-day usual | — | Amazon |
 GIGABYTE B850M FORCE Motherboard 90-day lowAM5 · B850 · Micro-ATX · DDR5 · first available Jul 2025 (1 yr 3 mo old) · RRP £119.992.5GbE · 3× M.2 · PCIe 5.0 · 2 RAM slots | £115.99as of | —3% under its 90-day usual | — | Amazon |
| £180.33as of | — | — | Amazon |
| £142.30as of | — | — | Amazon |
| £186.19as of | — | — | Amazon |
| £140.44as of | —1% under its 90-day usual | — | Amazon |
| £144.34as of | — | — | Amazon |
| £198.99as of | —13% under its 90-day usual | — | Amazon |
| £221.80as of | — | — | Amazon |
| £118.52as of | — | — | Amazon |
| £104.94as of | — | — | Amazon |
| £229.00as of | —6% under its 90-day usual | — | Amazon |
| £149.99as of | — | — | Amazon |
| £213.36as of | —10% under its 90-day usual | — | Amazon |