The Best Dual CPU Motherboards

Some motherboards allow you to install two processors at the same time. Here are the best dual CPU motherboards to get right now.

Dual processor motherboards are crucial for constructing a workstation brute for an affordable cost, and you won’t have to concern yourself with excessive CPU usage anymore. Naturally, in this scenario, an affordable cost is something below $10,000.

You can find dual-socket motherboards and processors for less than $1000 if you search well.

Whether you’re going with new or old, you will enjoy the advantages of an abundance of PCIe lanes, substantial RAM capacity, high-speed Ethernet, and more.

Here is a list of the best models we could find to get your hands on one of the best dual CPU motherboards available.

Take a look!

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The Pros:

  • High-frequency RAM supportrnTwo-way CPU overclockingrnGreat back I/O

The Cons:

  • Could use with higher RAM capacity

ASUS WS C621E Sage is a dual CPU motherboard supporting the 1st and 2nd Gen Xeon Scalable Processors, so you’ll have a range of processors to choose from.

For an affordable system, you could grab this $650 to $700 motherboard and two Xeon Bronze 3206R for another $650. That’s a total of 16 cores, no hyperthreading, unfortunately, and you will be limited to 2133 MHz RAM.

You could jump to Xeon Gold 6226R, which costs considerably more ($1400), but you’ll get 32 threads per CPU and 2933 MHZ RAM.

In regard to expansion, this ASUS motherboard has 3 PCIE 3.0 x16, 2 PCIe 3.0 (one x16 – two if x8) and 2 PCIe 3.0 x8 for growth.

In regards to I/O, there are 2x 3.1 Gen 2 USB ports (Type-A and Type-C), 4x USB 3.1 Gen 1 ports and 4x 2.0 ports, BIOS Flashback, 2x Gigabit Ethernet ports, and PS/2 ports.

The Pros:

  • High DRAM capacityrnSolid DRAM OC support

The Cons:

  • Sub-par I/OrnCould use more PCIe lanesrnFan ports are not labeled

AMD’s EPYC processors have made quite an impact these past couple of years, primarily because of expansion options, DRAM capacity, and affordability. However, the H11DSI-O motherboard by Supermicro won’t exactly save your wallet at a cost of around $650 to $750.

If you are interested in this motherboard, make sure you grab a 2.x board revision so you can have support for EPYC 7002 CPUs and 3200 MHz DRAM overclock.

Expansion slots include 2 PCIe 3.0 x16 and 3 PCIe 3.0 x8. A bit less than the previous Xeon motherboard.

Additionally, there is a minor absence in the I/O section as it consists of solely two USB 3.0 ports situated at the rear, along with two 2.0 ports. Through a header, two extra ports are accessible.

Setting up fans won’t be an issue since there are eight 4-pin PWM fan headers.

The Pros:

  • Good performancernAmple features for an older platformrnSupporting CPUs have solid second-hand prices.

The Cons:

  • 512GB DRAM capacityrnAging architecture, lacking features

We can’t talk about the best dual CPU motherboards if we don’t fit some older platforms in here. For example, the ASUS Z10PA-D8 is an LGA 2011 socket motherboard that supports anything from the 2014 Xeon E5-2600 v3 and up to the 2016 Xeon E5-2600 v4 family.

This socket might appear somewhat outdated when compared to EPYC server processors or Xeon Gold CPUs from 2020, but fortunately, you can still acquire them for a reasonable price if you happen to find them on the secondhand market.

The Xeon E5-2690V3 was a $2000 processor, but it’s now over seven years old, so if you manage to acquire two for half of the original price, you’ll have a 48-thread system up and running.

This platform does support DDR4 but only up to 2400 MHz and 512GB capacity (8 slots). Whether that’s enough DRAM depends on your use case.

It has abundant storage support with 10 SATA3 ports, one of them being M.2.

Overall, it is a solid dual socket motherboard, but only if you manage to find it at a reasonable price and the CPUs available for it.

The Pros:

  • CheaprnFeatures comparable to branded motherboards

The Cons:

  • Only 256GB RAM capacityrnLack of product informationrnMay not work as intended

Another LGA 2011 dual-socket motherboard for Xeon v3 and v4 processors, however, this item is slightly distinct from ASUS’ product.

This weirdly named X99 motherboard is a “new” product. Independent/unknown brands take these old platforms and repurpose them for server/workstation use. In this case, they’ve scrapped two (or more) one-CPU X99 motherboards and made it into a dual-socket mobo.

An unbranded motherboard built with this method results in a low final price. So, instead of paying up to $600 for a dead platform, you can grab one of these Chinese rebrands. Combine that low price with the cheap (used) Xeon E5-2600 v3 or v4; it’s a steal. And you can always upgrade to a higher core count CPU.

In terms of features, it is quite similar to the ASUS Z10PA-D8.

The Pros:

  • 10 Gbps EthernetrnSurplus of SATA3 portsrnUp to four M.2 slotsrnHigh RAM capacity

The Cons:

  • No apparent downsides except the price

The Supermicro X11DPI-NT might sell for $700+ on Amazon, but it’s definitely worth it as it is one of the most feature-rich boards in this article.

It shares the same socket as the previously mentioned ASUS WS C621E Sage board, but this one has a lot more SATA3 and M.2 ports.

Up to 4 Terabytes of ECC DRAM is possible at 2999 MHz. So, elevated frequency and capacity too.

In terms of expansion, it has 4 PCIe 3.0 x16 and 2 PCIe 3.0 x8, so a bit lacking in comparison to the ASUS board, but good enough. Back I/O could also use more ports as it has only one 3.2 Gen 1 port and two Gen 3.0 ports.

Lastly, we have the included Ten Gigabit Ethernet, a characteristic that I’m confident many users of dual CPU motherboards will find valuable.

Which Dual CPU Motherboard Should You Get?

Which Dual CPU Motherboard Should You Get

When purchasing a dual CPU motherboard, it’s important to think about what processors are available. We’ve listed the top boards for SP3, LGA 2011, and LGA 3647 sockets in this guide.

If you want to create a system with Xeon’s Scalable Processor family, we think the Supermicro X11DPI-NT is the top choice. It has plenty of PCIe lanes, lots of SATA3 and M.2 ports, and ten gigabit LAN.

If you want to create a low-cost build, we suggest choosing ZXCVBNM X99 as it provides the Greatest Worth.

Of course, AMD’s EPYC servers are incredibly powerful, so don’t turn a blind eye to the Supermicro H11DSI-O.

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Branko Gapo

Keeping up with the incredibly fast evolution of computer technology is almost impossible. That's why Branko will be using his knowledge on this matter to share news and information on all the latest essential technological innovations and advancements related to CPUs.