MSI · B550 · ATX
MSI MAG B550 Tomahawk Max WiFi
- AM4
- DDR4-5100
- PCIe 4.0
- Tier A
- Wi-Fi
- 2.5 GbE
The MSI MAG B550 Tomahawk Max WiFi holds about 638 W of sustained core power across 10 Vcore stages, which is the figure every processor on this page is measured against.
By Farrukh Sufyan Sarwar · Last verified 19 September 2026 · Model v1.0 · Build 2026-09-20
- Sustained capacity
- 638 W
- Derated for design and cooling
- Vcore stages
- 10 × 60 A
- Phase design
- Teamed phases
- VRM cooling
- Heavy heatsink
- Memory slots
- 4 × DDR4
- Up to 128 GB
- Validated speed
- 5100 MT/s
- M.2 slots
- 2
- Graphics slot
- PCIe 4.0 x16
- BIOS Flashback
- Yes
Power delivery
The MSI MAG B550 Tomahawk Max WiFi carries 10 Vcore power stages rated 60 A each in a teamed arrangement, under heavy heatsinks. Derating for the design and the cooling, our model puts it at roughly 638 W of sustained core power, which is enough for everything up to the AMD Ryzen 9 5900X at 140 W. That figure is published here rather than a marketing total because the phases that feed the SoC and the integrated graphics carry none of the CPU's core load.
What it throttles
Every AM4 processor in this database runs on the MSI MAG B550 Tomahawk Max WiFi without throttling. Its power delivery is not the constraint on this platform, so pick your processor on price and core count and move on.
Lane layout
Every AM4 processor on this board
| Processor | Verdict | VRM °C | Score | Clock loss |
|---|---|---|---|---|
| AMD Ryzen 3 41004 cores · 65 W sustained · Zen 2 (Renoir) | No throttle | 45 | 94 | 0 % |
| AMD Ryzen 5 56006 cores · 85 W sustained · Zen 3 | No throttle | 46 | 92 | 0 % |
| AMD Ryzen 7 5700X8 cores · 88 W sustained · Zen 3 | No throttle | 47 | 92 | 0 % |
| AMD Ryzen 5 36006 cores · 85 W sustained · Zen 2 | No throttle | 46 | 92 | 0 % |
| AMD Ryzen 5 5600X6 cores · 85 W sustained · Zen 3 | No throttle | 46 | 92 | 0 % |
| AMD Ryzen 5 5600G6 cores · 85 W sustained · Zen 3 | No throttle | 46 | 92 | 0 % |
| AMD Ryzen 7 3700X8 cores · 88 W sustained · Zen 2 | No throttle | 47 | 92 | 0 % |
| AMD Ryzen 7 5700G8 cores · 88 W sustained · Zen 3 | No throttle | 47 | 92 | 0 % |
| AMD Ryzen 5 55006 cores · 85 W sustained · Zen 3 | No throttle | 46 | 92 | 0 % |
| AMD Ryzen 5 45006 cores · 85 W sustained · Zen 2 (Renoir) | No throttle | 46 | 92 | 0 % |
| AMD Ryzen 5 5600GT6 cores · 85 W sustained · Zen 3 Refresh | No throttle | 46 | 92 | 0 % |
| AMD Ryzen 7 57008 cores · 88 W sustained · Zen 3 Refresh | No throttle | 47 | 92 | 0 % |
| AMD Ryzen 5 4600G6 cores · 85 W sustained · Zen 2 (Renoir) | No throttle | 46 | 92 | 0 % |
| AMD Ryzen 5 5500GT6 cores · 85 W sustained · Zen 3 Refresh | No throttle | 46 | 92 | 0 % |
| AMD Ryzen 5 3600X6 cores · 110 W sustained · Zen 2 | No throttle | 49 | 90 | 0 % |
| AMD Ryzen 5 3600XT6 cores · 110 W sustained · Zen 2 | No throttle | 49 | 90 | 0 % |
| AMD Ryzen 7 5800X3D8 cores · 120 W sustained · Zen 3 V-Cache | No throttle | 50 | 89 | 0 % |
| AMD Ryzen 7 5700X3D8 cores · 120 W sustained · Zen 3 Refresh | No throttle | 50 | 89 | 0 % |
| AMD Ryzen 9 5900X12 cores · 140 W sustained · Zen 3 | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 7 5800X8 cores · 135 W sustained · Zen 3 | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 9 5950X16 cores · 140 W sustained · Zen 3 | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 9 3900X12 cores · 140 W sustained · Zen 2 | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 9 3950X16 cores · 140 W sustained · Zen 2 | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 9 5900XT16 cores · 140 W sustained · Zen 3 Refresh | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 7 5800XT8 cores · 135 W sustained · Zen 3 Refresh | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 7 3800X8 cores · 135 W sustained · Zen 2 | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 9 3900XT12 cores · 140 W sustained · Zen 2 | No throttle | 52 | 87 | 0 % |
| AMD Ryzen 7 3800XT8 cores · 135 W sustained · Zen 2 | No throttle | 52 | 87 | 0 % |