Tyan S32272NR-C958 Review lowest power 16 core Atom platform

Tyan S32272NR C958 Cover Image
Tyan S32272NR C958 Cover Image

The Tyan S32272NR-C958 is an extraordinarily interesting platform to us. At STH we have done an enormous number of Intel Atom C3000 series reviews, with more on the way. Many of the embedded parts are meant to service storage and lightweight virtualization roles or the role of security appliances. The Tyan S32272NR-C958 is different in its approach as it specifically targets the network security appliance segment. As a result, we have a platform where the hardware is tailored for that purpose and an intriguing benefit: this is the lowest power 16 core Intel Atom C3000 series platform we have tested.

If you want a video version of the overview, you can find it here:

Tyan S32272NR-C958 Overview

The Tyan S32272NR-C958 is an extremely compact system. With a mITX form factor it will fit in just about any enclosure, including the 1U short depth and desktop form factors that are popular in security appliances.

Tyan S32272NR C958 Overview
Tyan S32272NR C958 Overview

The -C958 in the SKU means that the motherboard has an affixed Intel Atom C3958 CPU. The Intel Atom C3958 is a top bin 16-core CPU running at 2.0GHz. Beyond the pure cores and clock speed, the Atom C3958 also includes Intel’s hardware acceleration technology called QuickAssist which helps compression and crypto algorithms. QAT, as it is commonly referred to, is targeted at the communications and storage markets.

Tyan S32272NR C958 RAM Slots
Tyan S32272NR C958 RAM Slots

Although the Intel Atom C3958 can take up to four DIMMs if the motherboard is configured as such, the Tyan S32272NR is configured to use only two DDR4 DIMM slots. These can be filled with up to DDR4-2400 16GB UDIMMs or 32GB RDIMMs according to Tyan.

In terms of storage, there is a m.2 slot (2242 and 2260 supported) for boot devices. There are also two 7-pin SATA III 6.0gbps connectors for boot devices. The Tyan S32272NR is not intended for storage appliances where one would typically want a large array of SATA ports and RAM onboard.

Tyan S32272NR C958 M.2 And SATA
Tyan S32272NR C958 M.2 And SATA

There are two other expansion slots. First, there is a PCIe 3.0 x8 slot as well as a SFI slot (OCP) for appliance vendors to customize their systems using add-on PCB.

Tyan S32272NR C958 PCIe And OCP
Tyan S32272NR C958 PCIe And OCP

The rear of the motherboard has dual USB 3.0 and dual 1GbE ports. There is something different than all of the other Intel Atom C3000 systems we have seen before: no IPMI management port.

Tyan S32272NR C958 Rear IO
Tyan S32272NR C958 Rear IO

Tyan S32272NR C958 Rear IOSecurity appliances typically do not have IPMI management ports as it is a vector for a remote attacker to get console access to a system. This omission has another important benefit that we will see soon: it is the lowest power Intel Atom C3958 platform we have tested thus far.

Tyan S32272NR-C958 Performance

We recently covered the Intel Atom C3958 performance. You can check that out for more information on the SoC’s performance in a variety of applications. In terms of raw compute, we often use a Linux kernel compile to test systems. Here the 16 core Atom can be competitive with even the Intel Xeon Silver CPUs with almost 3x the TDP.

Intel Atom C3958 Linux Kernel Compile Benchmark
Intel Atom C3958 Linux Kernel Compile Benchmark

Perhaps more interesting is the OpenSSL RSA performance. Here are the sign figures:

Intel Atom C3958 OpenSSL Sign Benchmark
Intel Atom C3958 OpenSSL Sign Benchmark

Here are our verify figures:

Intel Atom C3958 OpenSSL Verify Benchmark
Intel Atom C3958 OpenSSL Verify Benchmark

These were not done with QAT. We will have QAT enabled figures soon as that is in the writing queue. Still, impressive performance even without acceleration.

Tyan S32272NR-C958 Power Consumption

One of the more exciting aspects of the platform is the lack of IPMI. Current generation Aspeed AST2500 BMC chips and their associated RAM and circuitry consume around 4 watts at idle and around 5 watts when the system is loaded. As a result, on 120V power we get excellent results from the Tyan platform by removing that excess component stack:

  • Power off BMC only: 0.3W
  • OS Idle: 25.1W
  • Single Thread Maximum: 29.7W
  • 100% Load: 47.8W

These are around 5-6W lower than other Intel Atom C3958 platforms we have tested.

Final Words

For some, the lack of and IPMI management interface, lack of 10GbE, and a full set of four DDR4 DIMM slots will be a turn-off. For those in the security segment, this is a great low power platform to build an appliance from. If we were looking to build a high core count Denverton firewall/ VPN appliance today, Tyan S32272NR would certainly be on our shortlist of solutions.

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Patrick has been running STH since 2009 and covers a wide variety of SME, SMB, and SOHO IT topics. Patrick is a consultant in the technology industry and has worked with numerous large hardware and storage vendors in the Silicon Valley. The goal of STH is simply to help users find some information about server, storage and networking, building blocks. If you have any helpful information please feel free to post on the forums.


  1. In a home environment, does OpenSSL performance really matter for a server made as a router? What about VPN, if I plan to connect to my server remotely using dynamic DNS (I already have one)?

    Since I am the only one living by myself, does it make sense to get by with 2 or 4 cores for a router, such as TYAN S32272NR-C538? The TDP of 15W is very attractive, but it only supports up to PCIe x2, which makes installing a dual 10Gbit SFP+ PCIe card pointless, but I could probably have it in a storage server instead of a router and do 10Gbit fiber networking with a mesh topology for two of my home desktop computers (gaming/general purpose and music creation) where I want to transfer files above 100MB/s, especially for backing up to a rack mount server.

    Speaking of which, I’m wondering if it’s possible for a C3858 CPU to emulate a C3358 by turning off unnecessary cores if I don’t need that many cores under load and turn the cores back on when I want it for remote VPN access?

    For IPMI, if I go with a Supermicro motherboard, can IPMI be disabled to save power? It’s nice that IPMI is not included, but how am I going to install Ubuntu 18.04 (when it comes out) into an M.2 SSD since there’s no VGA connector available? It seems like I’ll have to get a PCIe x1 GPU so that I can do the installation and then remove it once done.

    Anyway, thanks for the review.


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