9 Best Motherboards for Ryzen 9 3900X

The Ryzen 9 3900X is the penultimate 3rd gen Ryzen CPU from AMD, topped only by the 16-core/32-thread Ryzen 9 3950X. This 12-core CPU excels at productivity tasks but it’s also pretty good gaming CPU, and it will only get better at games once next-gen consoles come out and developers start optimizing games for more cores and threads.

AMD rates the Ryzen 9 3900X at 105 watts. This means you’ll need a quality board for this CPU. The good news is that there are several budget models with quality enough VRM that can support this CPU. Of course, there’s a bunch of X570 models that can fit the bill but we sifted through the offering and included the best picks on this list. We’ve also found a quality mATX board and a couple of excellent Mini-ITX motherboards.

Just remember that, ultimately, it all comes down to features. Some quality B450 boards are enough for the 3900X but they usually don’t come with advanced features. Stuff like three M.2 slots, support for 128 GB of memory, support for ultra-fast memory, Flash BIOS and Clear CMOS options, armored M.2 slots, a bunch of heatsinks covering most of the board, flashy RGB, integrated WiFi, high-end audio section, SLI support and 3 PCIe x16 slots, PCIe 4.0 support, or well populated back panel.

Best Motherboards for Ryzen 9 3900X – Our Picks

Best Motherboards for Ryzen 9 3900X – Our Picks
AwardModel 
Best Budget B450 Motherboard for Ryzen 9 3900XMSI B450 Tomahawk Max msi b450 tomahawk
Best Budget X470 Motherboard for Ryzen 9 3900XMSI X470 Gaming PRO Carbon msi x470 gaming pro carbon
Best Budget Motherboard for Ryzen 9 3900XASUS AM4 TUF Gaming X570-Plus asus am4 tuf gaming x570 plus
Gigabyte X570 AORUS Elite Wifi gigabyte x570 aorus elite wi fi
Best High-End Motherboard for Ryzen 9 3900XGigabyte X570 AORUS Master gigabyte x570 aorus master
ASUS ROG X570 Crosshair VIII Hero asus rog x570 crosshair viii hero
MSI MEG X570 ACE msi meg x570 ace
Best Micro-ATX Motherboard for Ryzen 9 3900XASRock X570M Pro4 asrock x570m pro4 motherboard
Best Mini-ITX Motherboard for Ryzen 9 3900XMSI B450I Gaming Plus AC msi b450i gaming plus ac

Why Pick the Ryzen 9 3900X?

The Ryzen 9 3900X is a productivity beast. Its 12-core/24-thread design allows it to run circles around the Core i9 9900K in almost every productivity benchmark. If you use your PC for work and not just for games, the 3900X is a much better investment than the i9 9900K.

The CPU stays behind the 9900K when it comes to games but it holds its ground and is perfectly suitable for high-refresh-rate gaming, both at 1080p and 1440p. If you use your PC exclusively for gaming getting a Core i9 9900K – or maybe even Core i7 9700K – is probably a better idea.

But, remember that the Ryzen 9 3900X has 12 cores, which should give it an edge in future games, which will most definitely be optimized for lots of cores and threads. The only area where the Ryzen 9 3900X falls behind Intel CPUs is it overclocking potential. But that’s the thing with all 3rd gen Ryzen CPUs. They just aren’t designed with extreme overclocking in mind.

Best Budget Motherboards for Ryzen 9 3900X

If you don’t need a bunch of M.2 and SATA slots, if you’re fine with heatsinks covering only the VRM and chipset, and if you don’t care about Crossfire and SLI, check out boards featured in this section. Don’t forget to ask the seller to update the BIOS for you in case you go with a B450 or X470 board. Some older boards have Flash BIOS feature, allowing users to install new BIOS without hooking up the CPU, but many don’t.

MSI B450 Tomahawk Max
ChipsetAMD B450
Memory4 × DDR4 DIMM, max. 128 GB
Storage1 × M.2, 6 × SATAIII
Multi GPU SupportAMD Crossfire
Expansion Slots2 × PCIe x16, 3 × PCIe x1
Back Panel Ports1 × PS/2 Combo
1 × DVI-D, 1× HDMI
1 × USB 3.2 Gen2 Type-A
1 × USB 3.2 Gen2 Type-C
2 × USB 3.2 Gen1
2 × USB 2.0
1 × LAN
HD Audio Connectors
Flash BIOS Button
Wi-FiNo

We have the MSI B450 Tomahawk Max on every list of best motherboards for Ryzen CPUs for good reasons. It has a fantastic VRM regarding its price and comes with a nice set of features. Also, it’s pretty affordable. It will run 3900X fine on default clocks. Overclock the CPU only if you have a good airflow inside your case.

The board looks rather nice, without unnecessary details and with a couple of heatsinks covering VRM and chipset. DDR4 memory can run up to 4133 MHz, which is pretty good. Storage-wise you get one M.2 slot along with 6 SATAIII ports, as expected in this price point. Realtek Gigabit LAN is responsible for networking.

There’re two PCIe x16 slots out of which one works in x16 mode and another in x4 mode. The board also hosts 3 PCIe x1 slots for expansion cards. Finally, the audio section is okay. It’s powered by Realtek ALC892 Codec and supports up to 7.1-channel audio.

MSI X470 Gaming PRO Carbon
ChipsetAMD X470
Memory4 × DDR4 DIMM, max. 128 GB
Storage2 × M.2, 8 × SATAIII
Multi GPU SupportAMD Crossfire, Nvidia SLI
Expansion Slots3 × PCIe x16, 2 × PCIe x1
Back Panel Ports1 × PS/2
1 × DisplayPort, 1 × HDMI
1 × USB 3.1 Gen2 Type-C
1 × USB 3.1 Gen2 Type-A
4 × USB 3.1 Gen1
2 × USB 2.0
1 × LAN Port
1 × Optical S/PDIF OUT
Golden Audio Connectors
Clear CMOS button
Wi-FiNo

The MSI X470 Gaming PRO Carbon is a competitively priced X470 board with a VRM section that was ahead of its time meaning it can host any 3rd gen Ryzen CPU. You should overclock the 3900X without issues. The board looks pretty attractive. All black design with a couple of grey details and subtle RGB effects on heatsinks.

Memory supports goes up to 3466MHz. Not great but fast enough to get the most out of the 3900X. There are three PCIe x16 slots in total. The first runs at x16 and the first two can run in x8/x8 mode in an SLI or Crossfire setup. The third x16 PCIe slot runs in x4 mode. There are also two PCIe x1 slots.

The board features two M.2 slots, one of which is armored, along with eight SATAIII ports. The Realtek ALC1220 Codec powers the audio section, and it supports 7.1-channel audio setups. The board has Gigabit LAN by Realtek.

The alternative to this board is the MSI B450 Gaming Pro Carbon AC. It offers basically the same package minus the SLI support but it comes with a Wi-Fi module. And its VRM is only a tad weaker. If you get the B450 version, you can OC the 3900X just make sure to have lots of airflow in your case to keep VRM at normal temps.

ASUS AM4 TUF Gaming X570-Plus
ChipsetAMD X570
Memory4 × DDR4 DIMM, max. 128 GB
Storage2 × M.2, 8 × SATAIII
Multi GPU SupportAMD Crossfire
Expansion Slots2 × PCIe x16, 2 × PCIe x1
Back Panel Ports1 × PS/2
1 × DisplayPort, 1 × HDMI
4 × USB 3.2 Gen 1 ports
3 × USB 3.2 Gen 2 ports (1 × Type C, 2 × Type A)
1 × LAN (RJ45) port
1 × Optical S/PDIF out
5 × Audio jacks
Wi-FiYes

Check out our piece about the best boards for Ryzen 5 3600 to read why PCIe 4.0 support on X570 boards is mostly a gimmick, at least for now. On the other hand, X570 boards can offer a slew of other handy features for those who want it all so if you need those, feel free to get an X570 board. The two best X570 offerings sport rather competitive prices.

Both the ASUS AM4 TUF Gaming X570-Plus and Gigabyte X570 AORUS Elite Wi-Fi are great boards with excellent VRM that won’t break the bank. If you don’t need features such as dual gigabit LAN, ultra-fast memory support, or three M.2 slots, go for any of these two. They both can support overclocking the Ryzen 9 3900X without issues.

Gigabyte X570 AORUS Elite Wifi
ChipsetAMD X570
Memory4 × DDR4 DIMM, max. 128 GB
Storage2 × M.2, 2 × SATAIII
Multi GPU SupportAMD Crossfire
Expansion Slots2 × PCIe x16, 2 × PCIe x1
Back Panel Ports2 × SMA antenna connectors
1 × HDMI
2 × USB 3.2 Gen 2 Type-A
4 × USB 3.2 Gen 1
4 × USB 2.0/1.1
1 × LAN
1 × Optical S/PDIF Out
5 × Audio jacks
Wi-FiYes

TUF board has support for 4400MHz memory while the Aorus Elite comes with 4000MHz DDR4 support. Both boards come with two M.2 slots with heatsink over one of them. TUF offers eight SATAIII ports while the Aorus Elite comes with “only” six. Both models have two PCIe x16 slots with one working at x16 mode and the other in x4 mode.

Gigabit LAN is powered by Realtek on the ASUS board and Intel on Gigabyte. Both boards have pretty solid audio departments with 7.1-channel support. Major differences come to only 2 fan headers on the Aorus Elite (TUF has 4) and Wi-Fi and Bluetooth 4.2 modules on the Aorus board. But you can get the Wi-Fi version of the TUF X570 Gaming Plus and for less money than you would pay for the Aorus Elite.

Best High-End Motherboards for Ryzen 9 3900X

Now we’ve come to the big guns. Boards featured here have everything you need to build an overkill gaming rig. But they have a price to match. Now, the ultimate board for 3rd gen Ryzen CPUs is the Gigabyte AORUS Xtreme. We didn’t include it here because its price is exorbitant. If you really want it, feel free to buy it. But you should know that its VRM is overkill and extra features aren’t worth the price.

Gigabyte X570 AORUS Master
ChipsetAMD X570
Memory4 × DDR4 DIMM, max. 128 GB
Storage3 × M.2, 6 × SATAIII
Multi GPU SupportNvidia SLI, AMD Crossfire
Expansion Slots3 × PCIe 4.0 x16
1 × PCIe 4.0 x1
Back Panel Ports1 × Q-Flash Plus button
1 × Clear CMOS button
2 × SMA antenna connectors
1 × USB 3.2 Gen 2 Type-C
3 × USB 3.2 Gen 2
2 × USB 3.2 Gen 1
4 × USB 2.0/1.1
2 × LAN
1 × optical S/PDIF Out
5 × audio jacks
Wi-FiYes

The second best Gigabyte X570 board is the AORUS Master and this one has all you need for the ultimate gaming setup powered by the Ryzen 9 3900X. Superb VRM allowing for extreme overclocking. Support for 4400MHz DDR4 memory.

Three PCIe 4.0 x4 M.2 slots, all three covered with heatsinks. Six SATAIII connectors. Three PCIe 4.0 x16 slots – one running at x16, one at x8, and one at x4 – and one PCIe 4.0 x1 slot. Dual Gigabit LAN powered by Intel and Realtek (2.5 Gigabit module), enough for home servers. Wi-Fi module and Bluetooth 5.0 module. Huge heatsinks over the chipset and VRM.

Full RGB support for creating a full-fledged rave party inside your case. Audio department powered by Realtek ALC1220-VB codec and equipped with ESS SABRE9118 DAC for audiophile headphones. Flash BIOS and Clear CMOS support along with dual BIOS. This board has it all you need for a killer setup.

ASUS ROG X570 Crosshair VIII Hero
ChipsetAMD X570
Memory4 x DIMM, DDR4, max. 128 GB
Storage2 x M.2, 8 x SATAIII
Multi-GPU SupportNvidia SLI, AMD CrossFireX
Expansion Slots3 × PCIe 4.0 x16
1 × PCIe 4.0 x1
Back Panel Ports1 × USB BIOS FlashBack Button
1 × Clear CMOS button
7 × USB 3.2 Gen2 Type-A
1 × USB 3.1 Gen2 Type-C
4 × USB 3.2 Gen 1
1 × Anti-surge 2.5G LAN (RJ45) port
1 × Anti-surge LAN
1 × Optical S/PDIF out
5 × Gold-plated audio jacks
Wi-FiYes

If you want something with noticeably lower price but still packed with features, check out the ASUS ROG X570 Crosshair VIII Hero. Its VRM isn’t designed the same as on the other high-end boards but it’s still more than enough for the 3900X. OC and all. The board looks very sleek. Armor is covering most of the lower part and huge heatsinks are also providing armor for the back panel. There are also a couple of RGB effects.

Memory support goes to 4400MHz DDR4. The three PCIe 4.0 x16 slots can work in x8/x8 mode when in SLI/Crossfire setup with the third x16 slot working in x4 mode. There’s also one PCIe 4.0 x1 slot. The board comes with two M.2 PCIe 4.0 x4 slots and eight SATAIII ports. We would’ve liked three M.2 slots at this price.

ROG SupremeFX High Definition Audio Codec powers the audio section. It provides excellent playback quality and lots of extra features. Dual gigabit LAN is present here as well as a slew of extra features. BIOS flash, Clear CMOS button, lots of diagnostic LEDs, ASUS Aura RGB support, Safe Boot button, and more.

MSI MEG X570 ACE
ChipsetAMD X570
Memory4 × DDR4 DIMM, max. 128 GB
Storage3 × M.2, 4 × SATAIII
Multi GPU SupportNvidia SLI, AMD CrossFire
Expansion Slots3 × PCIe 4.0 x16
2 × PCIe 4.0 x1
Back Panel PortsFlash BIOS Button
Clear CMOS Button
2 × Antenna Connectors
1 × PS/2
3×USB 3.2 Gen2 Type-A
1×USB 3.2 Gen2 Type-C
2×USB 3.2 Gen1
2×USB 2.0
REALTEK 2.5G + Intel Gigabit LAN
HD Audio Connectors
Wi-FiYes

If you want to overclock the 3900X to its limits but don’t want to pay up for the Gigabyte Aorus Master, get the MSI MEG X570 ACE. This is an excellent board for overclocking with beastly VRM. The design is a bit of a letdown compared to the Crosshair VIII Hero X570. Orange details aren’t pleasant to the eye and don’t combine well with the black and gray main theme.

Unlike the design, everything else is excellent. Build quality is on par with the ASUS and Gigabyte offerings, with heatsinks over M.2 slots and back panel, armored DIMMs and PCIe slots. The board can run DDR4 memory up to 5000MHz and comes with three M.2 PCIe 4.0 x4 slots. On the other hand, you get only four SATAIII connectors.

The board can run graphics cards in 2-way SLI and 3-way Crossfire setups, like the other two high-end boards featured here. It comes with 2 PCIe 4.0 x16 slots that can work in x8/x8 mode and the third one that works in x4 mode. There are also two PCIe 4.0 x1 slots. The Realtek ALC1220 Codec is behind audio department. It contains a DAC chip and advanced audio features.

The board features Wi-Fi 6-ready and Bluetooth 5.1 modules as well as dual Gigabit LAN. And of course, there are lots of extra features such as full RGB support, BIOS Flash and clear SMOS button, five fan headers, and more.

Best Micro-ATX Motherboard for Ryzen 9 3900X

There aren’t a lot of mATX boards out there capable of running the 3900X. The ASRock Steel Legend featured in our previous piece about best boards for 3700X and 3800X CPUs doesn’t have the VRM needed to run the 3900X. The only X570 mATX board, the ASRock X570M Pro4 does fit the bill. But, if you need a solid mATX board capable of running 3900X at stock clocks, get the MSI B450M Mortar Titanium. It’s much cheaper, looks nicer, and has almost the same set of features as the Pro4.

ASRock X570M Pro4
ChipsetAMD X570
Memory4 × DIMM, DDR4, max. 128 GB
Storage2 × M.2, 8 × SATA
Multi GPU SupportAMD CrossFire
Expansion Slots2 × PCIe x16, 1 × PCIe x1
Back Panel Ports1 × PS/2
1 × HDMI
1 × DisplayPort
1 × USB 3.2 Gen 2 Type-C
1 × USB 3.2 Gen 2 Type-A
6 × USB 3.2 Gen 1
1 × LAN
3 × Audio jacks
Wi-FiNo

The ASRock X570M Pro4 is the only X570 mATX board on the market so it automatically fills this spot. Its VRM is good enough even for overclocking the 3900X. You can run DDR4 memory up to 4200MHz and you also get two M.2 PCIe 4.0 x4 slots. There are eight SATAIII connectors in total and what’s interesting, the board comes with a third M.2 slot reserved for a Wi-Fi or Bluetooth module, which you can install separately.

There are two PCIe 4.0 x16 slots. The first works in x16 mode and the second in x4 mode. Realtek ALC1200 Audio Codec is responsible for the board’s audio section. The board doesn’t look like much. Simple black and grey design without any standout details. It should be fine for the 3900X but again, if you don’t plan on overclocking better get the MSI B450M Mortar Titanium.

Best Mini-ITX Motherboard for Ryzen 9 3900X

The best Mini ITX board for the Ryzen 9 3900X is the ASUS ROG Strix X570-I Gaming. That board is excellent in all departments. Superb VRM, excellent design, and lots of features. But the price it has on Amazon (when it’s available at all) is ludicrous. We cannot recommend it at the current price it has on Amazon. But if you find it at a regular price (placed between affordable X570 boards and boards such as ASUS ROG Crosshair VIII Hero) get it without thinking.

The second best board is the Asus ROG Crosshair VIII Impact but that one is also priced too high and it isn’t a proper Mini ITX board. Its form factor is DTX, which is 30mm longer than regular Mini ITX boards. That means this one won’t fit into every Mini-ITX case. Finally, the best bang for the buck is the MSI B450I Gaming Plus AC. That board has an amazing VRM for the price and a solid slew of features. But be careful when overclocking. Make sure to have good airflow or one small fan aimed directly at the VRM section.

We are left with the Gigabyte X570 AORUS Pro WIFI, which has solid VRM, enough to overclock the 3900X. But that one isn’t available on Amazon at the moment. If you want to overclock your 3900X CPU get this one if you cannot find the ROG Strix X570-I Gaming at a normal price. And don’t even think about getting the ASRock X570 PHANTOM GAMING-ITX/TB3. It’s great on paper but user reviews mention a ton of issues. So, we’ve come around to the MSI B450I Gaming Plus AC.

MSI B450I Gaming Plus AC
ChipsetAMD B450
Memory2 × DDR4 DIMM, max. 64 GB
Storage1 × M.2, 4 × SATAIII
Multi GPU SupportNone
Expansion Slots1 × PCIe x16
Back Panel Ports1 × PS/2
1 × DisplayPort, 1 × HDMI
1 × LAN
4 × USB 3.1 Gen1
2 × USB 2.0
HD Audio Connectors
Wi-FiYes

The MSI B450I Gaming Plus AC is an exceptional Mini-ITX board. First of all, it’s extremely affordable. Next, its VRM is so good it’s enough to run the 3900X at the base clock. You can even overclock the CPU if you have good enough airflow or a fan directly aimed at the VRM section of the board to keep it cool.

DDR4 memory can work up to 3466 MHz, but we recommend running the memory a bit lower. Next, the board has one M.2 slot along with four SATAIII ports. You also get one PCIe x16 slot. The audio section is a bit weak. The Realtek ALC887 Codec is a bit older but it does support 7.1 channel systems.

This is a nice board but again, if you find the ASUS ROG Strix X570-I Gaming at a normal price, get that one. Also, if you find Gigabyte X570 AORUS Pro WIFI in stock, you should get it if you want to overclock the CPU and need the second M.2 slot.

Goran Damnjanovic
Goran Damnjanovic
Goran is Levvvel's senior hardware writer. He studied psychology but found that video games and PC hardware were much more interesting. Over the years he's developed expertise in everything gaming tech related.
Goran Damnjanovic
Goran Damnjanovic
Goran is Levvvel's senior hardware writer. He studied psychology but found that video games and PC hardware were much more interesting. Over the years he's developed expertise in everything gaming tech related.

One Response

  1. Love your reviews, rely on them, in fact. Only one thing, since you made a point of it: “Penultimate” doesn’t mean ‘next to best’, it means ‘next to last’. You meant to say ‘the penultimate word on excellence’, for example.

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