AMD · AM5 · launched 2025
B850 motherboards
B850 is the 2025 mainstream AM5 chipset: CPU overclocking allowed, PCIe 5.0 to the primary M.2 required, PCIe 5.0 to the graphics slot optional, and Zen 5 support out of the box.
- Boards in database
- 6
- Capacity range
- 729–1440 W
- Sustained core power, derated
- Graphics slot
- PCIe 4.0 or 5.0
- Price range
- $199–$289
- CPU overclocking
- Allowed
- Memory overclocking (XMP / EXPO)
- Allowed
- The thing people get wrong
- Whether the graphics slot runs at Gen 5 varies by board rather than by chipset, so read the slot specification instead of assuming the chipset decides it.
The spread inside B850
Inside this one chipset, the MSI MAG B850M Mortar WiFi holds about 729 W of sustained core power and the ASUS ROG Strix B850-F Gaming WiFi holds about 1440 W. That is a factor of 2.0 between two boards wearing the same badge, and it is the reason a chipset name is a poor proxy for whether your processor will keep its clocks.
- ASUS ROG Strix B850-F Gaming WiFi1440 W · 16 × 80 A · $289
- MSI MAG B850 Tomahawk Max WiFi1260 W · 14 × 80 A · $239
- ASUS TUF Gaming B850-Plus WiFi1134 W · 14 × 80 A · $219
- ASRock B850 Pro RS WiFi1134 W · 14 × 80 A · $199
- Gigabyte B850 Aorus Elite WiFi7866 W · 14 × 55 A · $219
- MSI MAG B850M Mortar WiFi729 W · 12 × 60 A · $199
The same processors on the best and worst B850 board
Sorted worst verdict first, so the pairings to avoid are at the top.
| Pairing | Verdict | VRM °C | Score | Clock loss |
|---|---|---|---|---|
| AMD Ryzen 9 9950X3D on MSI MAG B850M Mortar WiFi225 W into 729 W | No throttle | 58 | 81 | 0 % |
| AMD Ryzen 9 9950X on MSI MAG B850M Mortar WiFi225 W into 729 W | No throttle | 58 | 81 | 0 % |
| AMD Ryzen 9 7950X on MSI MAG B850M Mortar WiFi225 W into 729 W | No throttle | 58 | 81 | 0 % |
| AMD Ryzen 9 7900X on MSI MAG B850M Mortar WiFi225 W into 729 W | No throttle | 58 | 81 | 0 % |
| AMD Ryzen 9 9900X3D on MSI MAG B850M Mortar WiFi160 W into 729 W | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 9 9900X on MSI MAG B850M Mortar WiFi160 W into 729 W | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 7 9800X3D on MSI MAG B850M Mortar WiFi140 W into 729 W | No throttle | 50 | 89 | 0 % |
| AMD Ryzen 9 7950X3D on MSI MAG B850M Mortar WiFi140 W into 729 W | No throttle | 50 | 89 | 0 % |
| AMD Ryzen 7 7700X on MSI MAG B850M Mortar WiFi140 W into 729 W | No throttle | 50 | 89 | 0 % |
| AMD Ryzen 5 7600X on MSI MAG B850M Mortar WiFi135 W into 729 W | No throttle | 50 | 89 | 0 % |
| AMD Ryzen 9 9950X3D on ASUS ROG Strix B850-F Gaming WiFi225 W into 1440 W | No throttle | 48 | 90 | 0 % |
| AMD Ryzen 9 9950X on ASUS ROG Strix B850-F Gaming WiFi225 W into 1440 W | No throttle | 48 | 90 | 0 % |
| AMD Ryzen 9 7950X on ASUS ROG Strix B850-F Gaming WiFi225 W into 1440 W | No throttle | 48 | 90 | 0 % |
| AMD Ryzen 9 7900X on ASUS ROG Strix B850-F Gaming WiFi225 W into 1440 W | No throttle | 48 | 90 | 0 % |
| AMD Ryzen 9 9900X3D on ASUS ROG Strix B850-F Gaming WiFi160 W into 1440 W | No throttle | 45 | 93 | 0 % |
| AMD Ryzen 9 9900X on ASUS ROG Strix B850-F Gaming WiFi160 W into 1440 W | No throttle | 45 | 93 | 0 % |
| AMD Ryzen 7 9800X3D on ASUS ROG Strix B850-F Gaming WiFi140 W into 1440 W | No throttle | 45 | 94 | 0 % |
| AMD Ryzen 9 7950X3D on ASUS ROG Strix B850-F Gaming WiFi140 W into 1440 W | No throttle | 45 | 94 | 0 % |
| AMD Ryzen 7 7700X on ASUS ROG Strix B850-F Gaming WiFi140 W into 1440 W | No throttle | 45 | 94 | 0 % |
| AMD Ryzen 5 7600X on ASUS ROG Strix B850-F Gaming WiFi135 W into 1440 W | No throttle | 44 | 95 | 0 % |