Buying Guide
The Best Motherboards for the Ryzen 9 7900X3D
Six AM5 boards for the 12-core Ryzen 9 7900X3D compared on power stages, M.2 slots, networking and price.
By The PC Journal editorial team
12 min read6 products evaluated
The Ryzen 9 7900X3D has 12 cores, six of them with 3D V-Cache. It draws less power than the 7950X, so a mid-range X870 or B850 board covers it.
We compared 6 boards for it. This is a research-based comparison built from maker specifications and retailer listings; we did not test these parts ourselves.
Quick Picks
Our 6 recommendations at a glance. Tap a pick for the full verdict.
Most Connected
MSI MAG X870E Tomahawk MAX WiFi PZ
Four M.2 slots, 5Gbps LAN, Wi-Fi 7 and USB4 with display output.
Best for: Builds with many devices.
Our take Check price for MSI MAG X870E Tomahawk MAX WiFi PZ (opens in a new tab)
Best Value
ASUS TUF Gaming B850-PLUS WiFi
A 14+2+1 layout of 80A stages and Wi-Fi 7 on B850.
Best for: Most 7900X3D builds.
Our take Check price for ASUS TUF Gaming B850-PLUS WiFi (opens in a new tab)
Worth Considering
MSI MAG X870 Tomahawk WiFi
The X870 Tomahawk pairs 5Gbps Ethernet with Wi-Fi 7 and USB4, covering the connectivity most builders want for years.
Best for: Buyers who want 5gbps wired ethernet.
Our take Check price for MSI MAG X870 Tomahawk WiFi (opens in a new tab)
Well-Rounded Choice
ASRock B850 Steel Legend WiFi
The B850 Steel Legend pairs four M.2 slots with a PCIe 5.0 M.2 slot and a white finish.
Best for: Buyers who want 4 m.2 slots for ssd expansion.
Our take Check price for ASRock B850 Steel Legend WiFi (opens in a new tab)
Lowest-Cost X670E
MSI X670E Gaming Plus WiFi
The X670E chipset with a 14+2+1 layout at a low price.
Best for: Builders who want PCIe 5.0 lanes for less.
Our take Check price for MSI X670E Gaming Plus WiFi (opens in a new tab)
Solid Alternative
GIGABYTE B650 AORUS Elite AX
The B650 AORUS Elite AX pairs a 14+2+1 power layout with a PCIe 5.0 M.2 slot and tool-free EZ-Latch card removal.
Best for: Buyers who want 14+2+1 power stage layout.
Our take Check price for GIGABYTE B650 AORUS Elite AX (opens in a new tab)
| Pick | Why it’s here | Best for | Price |
|---|---|---|---|
| Four M.2 slots, 5Gbps LAN, Wi-Fi 7 and USB4 with display output. | Builds with many devices. | Check price for MSI MAG X870E Tomahawk MAX WiFi PZ (opens in a new tab) |
| A 14+2+1 layout of 80A stages and Wi-Fi 7 on B850. | Most 7900X3D builds. | Check price for ASUS TUF Gaming B850-PLUS WiFi (opens in a new tab) |
| The X870 Tomahawk pairs 5Gbps Ethernet with Wi-Fi 7 and USB4, covering the connectivity most builders want for years. | Buyers who want 5gbps wired ethernet. | Check price for MSI MAG X870 Tomahawk WiFi (opens in a new tab) |
| The B850 Steel Legend pairs four M.2 slots with a PCIe 5.0 M.2 slot and a white finish. | Buyers who want 4 m.2 slots for ssd expansion. | Check price for ASRock B850 Steel Legend WiFi (opens in a new tab) |
| The X670E chipset with a 14+2+1 layout at a low price. | Builders who want PCIe 5.0 lanes for less. | Check price for MSI X670E Gaming Plus WiFi (opens in a new tab) |
| The B650 AORUS Elite AX pairs a 14+2+1 power layout with a PCIe 5.0 M.2 slot and tool-free EZ-Latch card removal. | Buyers who want 14+2+1 power stage layout. | Check price for GIGABYTE B650 AORUS Elite AX (opens in a new tab) |
Our Picks
Most Connected1 of 6
MSI MAG X870E Tomahawk MAX WiFi PZ on Amazon (opens in a new tab)
The X870E Tomahawk MAX PZ offers four M.2 slots, 5Gbps LAN, Wi-Fi 7 and USB4 with display output.
Best for
- Builds with many devices.
Skip if
- Skip it if price comes first: the B650 AORUS Elite AX cost less when we checked.
Why we like it
On M.2 slot count it ties with the B850 Steel Legend at 4. On wired network speed it ties with the X870 Tomahawk at 5Gbps. It also comes with a PCIe 5.0 graphics slot.
It uses AMD's AM5 socket, so it takes Ryzen 7000, 8000 and 9000 chips; a board built before a CPU's launch may need a BIOS update first, so check whether it supports BIOS Flashback. Check the manual for which M.2 slots share lanes with SATA ports or the second PCIe slot before filling them all. It was the most expensive pick when we checked, so weigh what it adds over the X870 Tomahawk.
Key dimensions & specs
- M.2 slots: 4
- Wired LAN: 5Gbps
- Wi-Fi: Wi-Fi 7
- USB4: Yes
- Form factor: ATX
- Socket: AM5
Pros
- 4 M.2 slots for SSD expansion
- 5Gbps wired Ethernet
- Wi-Fi 7 built in
- USB4 ports on the rear panel
Cons
- Costs more than the B650 AORUS Elite AX at the time of writing
Best Value2 of 6
ASUS TUF Gaming B850-PLUS WiFi on Amazon (opens in a new tab)
The TUF B850-PLUS offers a 14+2+1 layout of 80A power stages and Wi-Fi 7.
Best for
- Most 7900X3D builds.
Skip if
- Skip it if M.2 slot count matters most to you; the X870E Tomahawk MAX PZ offers 4.
Why we like it
It suits a 12- or 16-core Ryzen on B850. Its 3 M.2 slot count is the fewest in this group; the X870E Tomahawk MAX PZ leads at 4. It matches the B850 Steel Legend, the X670E Gaming Plus and the B650 AORUS Elite AX on wired network speed (2.5Gbps).
You also get a front USB 10Gbps Type-C header. It uses AMD's AM5 socket, so it takes Ryzen 7000, 8000 and 9000 chips; a board built before a CPU's launch may need a BIOS update first, so check whether it supports BIOS Flashback. Check the manual for which M.2 slots share lanes with SATA ports or the second PCIe slot before filling them all. When we checked, only the B850 Steel Legend and cheaper picks cost less, and the X870 Tomahawk cost more.
Key dimensions & specs
- M.2 slots: 3
- Wired LAN: 2.5Gbps
- Wi-Fi: Wi-Fi 7
- Power stages: 14+2+1
- Form factor: ATX
- Socket: AM5
Pros
- Wi-Fi 7 built in
- 14+2+1 power stage layout
- 80A power stages
- Front USB 10Gbps Type-C header
Cons
- M.2 slot count trails the X870E Tomahawk MAX PZ (4)
- Costs more than the B650 AORUS Elite AX at the time of writing
Worth Considering3 of 6
MSI MAG X870 Tomahawk WiFi on Amazon (opens in a new tab)
The X870 Tomahawk pairs 5Gbps Ethernet with Wi-Fi 7 and USB4, covering the connectivity most builders want for years.
Best for
- Buyers who want 5gbps wired ethernet.
Skip if
- The maker gives no M.2 slot count, so look elsewhere if that figure decides it for you.
Why we like it
It has 5G LAN, an extended VRM heatsink and isolated Audio Boost 5. On wired network speed it ties with the X870E Tomahawk MAX PZ at 5Gbps. It is the only pick here with an X870 chipset; the X670E Gaming Plus has an X670E chipset instead.
It also offers a PCIe 5.0 M.2 slot and Bluetooth 5.4 alongside Wi-Fi 7. It uses AMD's AM5 socket, so it takes Ryzen 7000, 8000 and 9000 chips; a board built before a CPU's launch may need a BIOS update first, so check whether it supports BIOS Flashback. Its price falls between the TUF B850-PLUS and the X870E Tomahawk MAX PZ, based on our last check. Buyers who need a confirmed M.2 slot count should compare it with the X870E Tomahawk MAX PZ, which offers 4.
Key dimensions & specs
- Wired LAN: 5Gbps
- Wi-Fi: Wi-Fi 7
- USB4: Yes
- Form factor: ATX
- Socket: AM5
- Chipset: X870
Pros
- 5Gbps wired Ethernet
- Wi-Fi 7 built in
- USB4 ports on the rear panel
- PCIe 5.0 M.2 slot
Cons
- No published M.2 slot count
- Costs more than the B650 AORUS Elite AX at the time of writing
Well-Rounded Choice4 of 6
ASRock B850 Steel Legend WiFi on Amazon (opens in a new tab)
The B850 Steel Legend pairs four M.2 slots with a PCIe 5.0 M.2 slot and a white finish.
Best for
- Buyers who want 4 m.2 slots for ssd expansion.
Skip if
- Skip it if price comes first: the B650 AORUS Elite AX cost less when we checked.
Why we like it
On M.2 slot count it ties with the X870E Tomahawk MAX PZ at 4. On wired network speed it ties with the TUF B850-PLUS, the X670E Gaming Plus and the B650 AORUS Elite AX at 2.5Gbps. It uses AMD's AM5 socket, so it takes Ryzen 7000, 8000 and 9000 chips; a board built before a CPU's launch may need a BIOS update first, so check whether it supports BIOS Flashback.
Check the manual for which M.2 slots share lanes with SATA ports or the second PCIe slot before filling them all. Its price falls between the X670E Gaming Plus and the TUF B850-PLUS, based on our last check.
Key dimensions & specs
- M.2 slots: 4
- Wired LAN: 2.5Gbps
- Wi-Fi: Wi-Fi 7
- Power stages: 14+2+1
- Form factor: ATX
- Socket: AM5
Pros
- 4 M.2 slots for SSD expansion
- Wi-Fi 7 built in
- 14+2+1 power stage layout
- PCIe 5.0 M.2 slot
Cons
- Costs more than the B650 AORUS Elite AX at the time of writing
Lowest-Cost X670E5 of 6
MSI X670E Gaming Plus WiFi on Amazon (opens in a new tab)
The X670E Gaming Plus WiFi is the lowest-priced X670E board here by a wide margin, with a 14+2+1 layout, Wi-Fi 6E and 2.5Gbps LAN.
Best for
- Builders who want PCIe 5.0 lanes for less.
Skip if
- Skip it if this is a deal-breaker for you: wi-Fi 6E rather than Wi-Fi 7.
Why we like it
It trades extras for the X670E chipset's PCIe 5.0 lanes. On wired network speed it ties with the TUF B850-PLUS, the B850 Steel Legend and the B650 AORUS Elite AX at 2.5Gbps. No other pick in this guide offers an X670E chipset; compare the X870 Tomahawk, which has an X870 chipset.
It also offers Bluetooth 5.3 alongside Wi-Fi 6E. It uses AMD's AM5 socket, so it takes Ryzen 7000, 8000 and 9000 chips; a board built before a CPU's launch may need a BIOS update first, so check whether it supports BIOS Flashback. On price it sat second of 6, between the cheaper B650 AORUS Elite AX and the pricier B850 Steel Legend, at the time of writing. The maker doesn't give its M.2 slot count; if that figure matters, the X870E Tomahawk MAX PZ offers 4.
Key dimensions & specs
- Wired LAN: 2.5Gbps
- Wi-Fi: Wi-Fi 6E
- Power stages: 14+2+1
- Form factor: ATX
- Socket: AM5
- Chipset: X670E
Pros
- 14+2+1 power stage layout
- PCIe 5.0 support from the X670E chipset
- Bluetooth 5.3 alongside Wi-Fi 6E
- The X670E chipset with a 14+2+1 layout at a low price
Cons
- Wi-Fi 6E rather than Wi-Fi 7
- No published M.2 slot count
- Costs more than the B650 AORUS Elite AX at the time of writing
Solid Alternative6 of 6
GIGABYTE B650 AORUS Elite AX on Amazon (opens in a new tab)
The B650 AORUS Elite AX pairs a 14+2+1 power layout with a PCIe 5.0 M.2 slot and tool-free EZ-Latch card removal.
Best for
- Buyers who want 14+2+1 power stage layout.
Skip if
- Worth skipping when wi-Fi 6E rather than Wi-Fi is a problem.
Why we like it
It is the most complete B650 board for its price here. On wired network speed it ties with the TUF B850-PLUS, the B850 Steel Legend and the X670E Gaming Plus at 2.5Gbps. No other pick in this guide offers a B650 chipset; compare the X870 Tomahawk, which has an X870 chipset.
It also comes with Q-Flash BIOS updating. It uses AMD's AM5 socket, so it takes Ryzen 7000, 8000 and 9000 chips; a board built before a CPU's launch may need a BIOS update first, so check whether it supports BIOS Flashback. It undercut the X670E Gaming Plus and every other pick on price at the time of writing. The maker doesn't give its M.2 slot count; if that figure matters, the X870E Tomahawk MAX PZ offers 4.
Key dimensions & specs
- Wired LAN: 2.5Gbps
- Wi-Fi: Wi-Fi 6E
- Power stages: 14+2+1
- Form factor: ATX
- Socket: AM5
- Chipset: B650
Pros
- 14+2+1 power stage layout
- PCIe 5.0 M.2 slot
- EZ-Latch for tool-free graphics card removal
- Q-Flash BIOS updating
Cons
- Wi-Fi 6E rather than Wi-Fi 7
- No published M.2 slot count
- Wired network speed trails the X870E Tomahawk MAX PZ (5Gbps)
How We Chose These Ryzen 9 7900X3D Motherboards
Each pick was assessed across 4 criteria weighted for real-world use.
- Power delivery
- We noted power stage layouts where the maker lists them.
- Connectivity
- We compared Wi-Fi, wired LAN speed and USB4.
- Platform
- We checked socket, chipset and form factor from each listing.
- Storage
- We counted listed M.2 slots and PCIe 5.0 support.
What to Look for in a Ryzen 9 7900X3D Motherboard
Key buying criteria so you get the right fit the first time.
Match the chipset to your plans
On AM5, B850 covers most gaming builds with PCIe 5.0 for at least one slot. X870E adds more PCIe 5.0 lanes and USB4 for heavy expansion.
Features, not frame rates, separate the chipsets.
Networking matters for daily use
Wi-Fi 7 and 5Gbps Ethernet help only if your router supports them, but built-in Wi-Fi saves a PCIe card.
Check BIOS support and Flashback
A board may need a BIOS update before it runs a newer CPU. BIOS Flashback lets you update without a working CPU installed.
Check the rear and front I/O
Count USB ports you use every day and confirm a front USB-C header if your case has a USB-C port.
Count M.2 slots
Most games now install to NVMe drives. Count how many M.2 slots you need now and later, and check which ones share lanes with other ports.
Power delivery for high-end CPUs
Boards with more and stronger power stages run hot 16-core chips more comfortably. For eight-core gaming CPUs, most current boards are enough.
How to Choose a Ryzen 9 7900X3D Motherboard
By priority
| Priority | Consider | Why |
|---|---|---|
| Builds with many devices | X870E Tomahawk MAX PZ | Four M.2 slots, 5Gbps LAN, Wi-Fi 7 and USB4 with display output |
| Most 7900X3D builds | TUF B850-PLUS | A 14+2+1 layout of 80A stages and Wi-Fi 7 on B850 |
| Builders who want PCIe 5.0 lanes for less | X670E Gaming Plus | The X670E chipset with a 14+2+1 layout at a low price |
Scroll sideways to see every column.
Key specs side by side
Figures as each maker states them.
| Board | M.2 slots | Wired LAN | Wi-Fi | Power stages |
|---|---|---|---|---|
| X870E Tomahawk MAX PZ | 4 | 5Gbps | Wi-Fi 7 | Not listed |
| TUF B850-PLUS | 3 | 2.5Gbps | Wi-Fi 7 | 14+2+1 |
| X870 Tomahawk | Not listed | 5Gbps | Wi-Fi 7 | Not listed |
| B850 Steel Legend | 4 | 2.5Gbps | Wi-Fi 7 | 14+2+1 |
| X670E Gaming Plus | Not listed | 2.5Gbps | Wi-Fi 6E | 14+2+1 |
| B650 AORUS Elite AX | Not listed | 2.5Gbps | Wi-Fi 6E | 14+2+1 |
Scroll sideways to see every column.
By price at the time of writing
Prices change often; these tiers reflect Amazon prices when this guide was updated.
| Price tier | Boards |
|---|---|
| About $100 to $150 | B650 AORUS Elite AX |
| About $150 to $250 | X670E Gaming Plus, B850 Steel Legend, TUF B850-PLUS, X870 Tomahawk |
| About $250 to $500 | X870E Tomahawk MAX PZ |
Frequently Asked Questions
Do I need PCIe 5.0?
Current graphics cards barely benefit. PCIe 5.0 matters more for the fastest SSDs.
Do I need X870E for gaming?
No. A B850 board runs the same CPUs at the same speed; X870E adds more PCIe 5.0 lanes, USB4 and expansion.
What size motherboard should I buy?
ATX fits most mid-towers and has the most slots. Micro-ATX and Mini-ITX suit smaller cases with fewer expansion needs.
Should I fill all four memory slots?
Two sticks usually run faster and more reliably on DDR5. Buy a two-stick kit with the capacity you need.
Will a new board work with my CPU out of the box?
Usually, but check the board's CPU support list. If your chip needs a newer BIOS, BIOS Flashback updates it from a USB drive.
Is built-in Wi-Fi worth it?
Yes if you cannot run a cable. Otherwise wired Ethernet is more consistent.
Bottom Line
The X870E Tomahawk MAX PZ is the most connected board here. The TUF B850-PLUS and X870 Tomahawk suit most builds, and the X670E Gaming Plus saves money.