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 CPU motherboards are essential to building a workstation beast for a reasonable price, and you won’t have to worry about high CPU usage ever again. Of course, in this case, a reasonable price is something below $10,000.

Although second-hand dual-socket motherboards and adequate processors can be acquired for less than $1000 if you look in the right place.

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

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

Take a look!

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The Pros:

  • High-frequency RAM support
  • Two-way CPU overclocking
  • Great 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 variety of processors to choose from.

For a cheap 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 terms of expansion, this ASUS mobo comes with 3 PCIE 3.0 x16, 2 PCIe 3.0 (single x16 – dual if x8) and 2 PCIe 3.0 x8.

When it comes 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 capacity
  • Solid DRAM OC support

The Cons:

  • Sub-par I/O
  • Could use more PCIe lanes
  • Fan ports are not labeled

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

It’s also a bit lacking in the I/O segment since it has only two USB 3.0 ports on the back and two 2.0 ports. There are two more available through a header.

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

The Pros:

  • Good performance
  • Ample features for an older platform
  • Supporting CPUs have solid second-hand prices.

The Cons:

  • 512GB DRAM capacity
  • Aging 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 2014 Xeon E5-2600 v3 and up to the 2016 Xeon E5-2600 v4 family.

This socket may be a bit outdated compared to EPYC server processor or 2020 Xeon Gold CPUs, but at least you can grab those for an affordable price if you manage to find them on the used market.

The Xeon E5-2690V3 was a $2000 processor, but it’s now over 7 years old, so if you manage to grab 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 ample 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 good price and the CPUs available for it.

The Pros:

  • Cheap
  • Features comparable to branded motherboards

The Cons:

  • Only 256GB RAM capacity
  • Lack of product information
  • May not work as intended

Another LGA 2011 dual-socket motherboard for Xeon v3 and v4 CPUs, but this product is a bit different than 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 Ethernet
  • Surplus of SATA3 ports
  • Up to four M.2 slots
  • High RAM capacity

The Cons:

  • No apparent downsides except the price

The Supermicro X11DPI-NT might be selling 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, high 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.

Last but not least is the built-in Ten Gigabit Ethernet, a feature I’m sure many dual CPU motherboard users can appreciate.

Which Dual CPU Motherboard Should You Get?

Which Dual CPU Motherboard Should You Get

When buying the right dual CPU motherboard, it is vital to consider the possibilities based on the processors available. In this article, we covered the best boards for the SP3, LGA 2011, and LGA 3647 sockets.

If you’re looking to build a system with Xeon’s Scalable Processor family, we believe the Supermicro X11DPI-NT is the Best Overall. It’s got enough PCIe lanes, an abundance of SATA3 and M.2 ports, and ten gigabit LAN.

If you’re looking to go down a budget-oriented build, we recommend going with ZXCVBNM X99 since it offers the Best Value.

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
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.