Home Consumer Simply NUC Ruby R8 (CBM1r8RB) AMD NUC Review

Simply NUC Ruby R8 (CBM1r8RB) AMD NUC Review

by Tom Fenton
Simply NUC Ruby parts

Over the past years, we have reviewed half a dozen Intel NUCs – ranging from the very powerful NUC 9 Pro, which is basically a small form factor (SFF) Xeon Powered workstation, to a NUC7CJYS powered by a dual-core Intel Celeron J4005 processor. Now we’re on to something entirely new, the Simply NUC Ruby R8 AMD-powered NUC.

Over the past years, we have reviewed half a dozen Intel NUCs – ranging from the very powerful NUC 9 Pro, which is basically a small form factor (SFF) Xeon Powered workstation, to a NUC7CJYS powered by a dual-core Intel Celeron J4005 processor. Now we’re on to something entirely new, the Simply NUC Ruby R8 AMD-powered NUC.

We have used the NUCs for everything, including as ESXi servers and VDI clients. The last two NUCs we reviewed were the NUC 11 Compute Element and NUC 11 Pro. Both of the NUC 11’s were designed for light gaming, home theater, and content creation. We found either of them would make a small yet powerful desktop replacement. The one thing all the NUC systems have in common is that they are powered and built by Intel. Until recently.

Simply NUC Ruby – AMD Powered NUC

We recently received an AMD Ruby R8 (CMB1r8RB) from Simply NUC, a company that specializes in selling and customizing systems, and we believe that they are one of the largest resellers that specialize in selling SFF systems. Although the system we received looks like and is the same form factor as a NUC, it’s not to be confused with the Intel product.

The Ruby is from Simply NUC’s bespoken line of AMD-powered SFF systems. It was designed as a desktop replacement with a minimal desktop footprint and can be attached to the back of a monitor via a VESA connector. In this review, we will take a close look at the Ruby R8, including its configurations and specs, and discuss the benchmarking tests we ran on the system and how it compares to comparable NUCs that we have reviewed.

Simply NUC Ruby r8 bottom

There are various configurations available for the Ruby – the least powerful is powered by a Ryzen 3 4300U processor, and the most powerful is powered by a Ryzen 7 4800U processor. They come in a 115 x 115 x 49mm case. The model we are reviewing in this article is the Ruby R8 with a Ryzen 7 4800U processor.

The photo below shows how similar in size and construction the Ruby is to an Intel NUC 8, 9, and 10.

All the Ruby models have two DDR4-3200 SO-DIMM memory slots, and two 2280 M.2 slots (one supports a SATA drive while the other supports an NVMe or SATA drive). They have one HDMI 2.0a and one DisplayPort 1.2a. For network connectivity, they have a 1GbE and a 2.5GbE NIC, Wi-Fi 6 AX200, and Bluetooth 5. For USB connectivity, they have two USB 3.2 Gen 2 Type-A ports, two USB 3.2 Gen 2 Type-C ports, and two USB 2.0 ports. Fully configured, a Ruby has a starting price of $519.

Simply NUC Ruby Ruby R8 Specifications

Below are specifications for the Ruby R8 that we will be reviewing:

  • Manufacturer: Simply NUC
  • Model: Ruby R8
  • MSRP: $$819 bare
  • Form factor: SFF
  • Installed OS: Windows 10 Pro
  • Supported OSes: Windows 10, 64-bit, Red Hat Linux, and Ubuntu
  • CPU: AMD Ryzen 7 4800U
    • 8 cores, 16 threads
    • 8MB L3 cache, 4MB L2 cache
    • 8 GHz base, 4.2 GHz Max Boost
    • TDP 10-25W
    • Image Processing Unit (IPU)
  • Embedded GPU: AMD Radeon Vega 8 Graphics (up to 1.75 GHz, and 8 cores)
  • Memory: 16 GB installed (64 GB max) 2 x DDR4-3200 1.2V SO-DIMMs
  • Internal storage options:
    • 1x M.2 2242 SATA III / PCIe Gen 3 (populated with a 1TB Samsung EVO 860 SSD)
    • 1x M.2 2280 PCIe Gen 4 X4 NVMe
  • Display:
    • 1x HDMI 2.0b1x HDMI
    • 1x DP 1.4a
    • 2x DP 1.4a (Type-C)
    • Max res. DP 7680×4320
  • Power consumption: 19V, 4.74A, 90W AC-DC external power supply
  • Ports:
    • 2x USB 3.2 (front)
    • 2x USB 2.0 (rear)
    • 2x USB 3.2 Type-C
  • Multimedia:
    • 5 mm audio-in/out jack
  • Network connectivity:
    • 1x 1GbE NIC
    • 1x 2.5GbE NIC
    • Intel Wi-Fi 6 AX200 802.11ax
      • 4Gbps Supports 802.11a/b/g/n/ac/ax
    • Bluetooth v5.0
  • Physical size: 115 x 115 x 49mm
  • Physical weight: N/A
  • Color: black
  • Compliance standards: the product meets numerous safety regulations, EMC/RF, and environmental standards.
  • Package contents: Ruby R8 device, power adapter, single sheet startup guide, and VESA mounting plate.
  • Warranty: 2-year standard, other warranty options available.

Simply NUC Ruby R8 Design and Build

We received our Ruby in a white 5” x 7.5” x 4.5” white box emblazoned with “Simply NUC. THINK BIG, go mini.” After removing the top of the box, we found the computer, a VESA mounting plate with screws, an external power supply, as well as a quick start.

On the rear of the device are an HDMI, DisplayPort, ports, two USB 2.0 ports, a 1GBE, 2.5Gbe, and the electric power inlet.

Simply NUC Ruby ports

The front of the device holds the silver power button/LED, two Type-A USB 3.2 ports, two Type-C USB 3.2 ports, and the 3.5mm audio jack.

Simply NUC Ruby USB

The sides and top of the device’s case are made of black plastic with ventilation holes on the two sides. The bottom is made of metal and has a threaded hole where its VESA mount can be attached. The top of the device has a slight indentation and can easily be pried off. Overall, the case on this device is durable and should hold up well for home, office, or edge deployments.

The bottom of the case is attached by four captive Phillips-head screws. By removing these screws, you will expose the motherboard, attached to the base is a daughterboard for a SATA M.2, that was unpopulated.

Simply NUC Ruby open

The motherboard has an Intel AX200GW Wi-Fi module, a full-sized M.2 slot populated with a 1TB Samsung 860 EVO SATA SSD. The two 1.2V DDR4 slots were populated with Kingston KVR32S22S8/8 SO-DIMMs.

Simply NUC Ruby closeup

The unit has a single AMD Ryzen 7 4800U processor that was launched in Q2 of 2020. This CPU is a 64-bit eight-core mobile x64 microprocessor based on 7nm Xen 2 microarchitecture, with 8MB L3 cache and 4MB L2 cache. It supports hyper-threading, meaning that a total of 16 threads can be running at a given time. The processor operates at a nominal speed of 1.8 GHz with a Max boost of up to 4.2 GHz. It has a Thermal Design Power (TDP) rating of 24 W and supports up to 64 GB of dual-channel DDR4-3200 memory.

The CPU has an integrated Radeon RX Vega 8 integrated graphics card with 8 CUs and up to 1750 MHz. The GPU has 8 cores.

The WLAN is an Intel Wi-Fi 6 AX200 that is capable of transfer rates of up to 2.4 Gbps. Since this is a module, and not soldered into the motherboard, it can be replaced if desired.

Initial Boot

For the initial boot and testing of the device, we connected it to a Dell UltraSharp 32” 4K Monitor (U3219Q) via HDMI. The Dell monitor has a keyboard, mouse, and video (KVM) switch built into it, which proved extremely useful throughout our testing as it allowed us to switch between the device and our laptop with the push of a button. We plugged a Dell wireless keyboard and mouse (part number KM636) dongle into the monitor’s upstream USB port.

We booted up the system and were presented with the Windows 10 Pro (20H2 build 19042.867) installation wizard. It took less than five minutes to install Windows and have the system running. We then updated Windows Pro and the AMD BIOS and drivers to the latest versions.

2.5GbE NIC

This is the second SFF system that we received with a 2.5GbE NIC in it. We were curious as to how well it would perform. We connected the two systems together using a MikroTik CRS305-1G-4S+IN 10GbE 5-Port Desktop Switch using Cat 6 cables.

We then used iperf3 to test the bandwidth between the two systems. I first connected the systems through a 10GbE switch. The results showed a transfer rate of 2.36 Gbps.

Simply NUC Ruby R8 Performance

To evaluate the device’s performance, we ran benchmarking tests on it and then compared the results to the Intel NUCs that fit in the same category as the Ruby R8; the NUC 8, NUC 10, NUC 11 Compute Element, and NUC 11 Pro. We excluded the NUC 9 Pro from the results as it is a workstation-class machine and has a different form factor than the other systems.

SPECworkstation 3

SPECworkstation 3 is a specialized test designed for benchmarking the key aspects of workstation performance by using over 30 workloads to test CPU, graphics, I/O, and memory bandwidth. The workloads fall into seven broad categories: Media and Entertainment, Product Development, Life Sciences, Energy, Financial Services, General Operations, and GPU Compute. We are going to list the broad-category results which represent an average for all the individual workloads in each category.

The results from our tests indicate that the Ruby with its 8 cores was faster than all the NUC systems other than the NUC 11 CE which has an 11th generation i7 processor.

Overall, the results are aligned with what we expected to see with this system, as systems with more and faster cores, should perform better.

SPECworkstation 3
System NUC 8 NUC 10 Pro NUC 11 CE NUC 11 Pro Ruby R8
  i7-8559U 4 [email protected] GHz


i7-10710U 6 [email protected]


i7-1185G7 4 [email protected]


i5-1135G7 4 [email protected]


AMD Ryzen 7 4800U 8 [email protected]


M&E 0.93 1.34 1.1 0.95 1.39
ProdDev 1.09 1.42 1.36 0.86 1.46
LifeSci 0.78 1.40 1.12 0.93 1.48
Energy 0.70 0.70 0.77 0.60 0.67
Financial Services 1.04 1.40 1.17 1.17 2.46
General Operations 1.38 1.38 1.41 1.31 N/A
GPU Compute N/A 0.46 N/A N/A N/A

SPECviewperf 12.1

We ran the SPECviewperf 12 benchmark on the Ruby R8. The SPECviewperf 12, considered to be the worldwide standard for measuring graphics performance based on professional applications, runs 9 benchmarks called viewsets, which represent graphics content and behavior from actual applications, and include categories such as: 3D Max, CATIA, Creo, Energy, Maya, Medical, Showcase, Siemens NX, and Solidworks.

This test really highlights the 8 cores in the Ruby R8 as in some tests it was more performant than the NUC 11 CE in some tests and slightly lagged it. The R8 had outstanding performance in the Siemens NX (SNX) test which fully utilized the 8 cores in the R8.  Both of the NUC 11’s have Iris iGPU’s in them which helped in graphics-intensive workloads despite them having fewer CPU cores than the Ruby R8.

SPECviewperf 12.1
System NUC 8 NUC 10 Pro NUC 11 CE NUC 11 Pro Ruby R8
  i7-8559U 4 [email protected]


i7-10710U 6 [email protected]


i7-1185G7 4 [email protected]


i5-1135G7 4 [email protected]


AMD Ryzen 7 4800U 8 [email protected]


3dsmax 20.74 11.84 32.77 27.29 41.71
catia 21.33 14.12 40.36   29.56 37.17
creo 17.57 13.01 9.6 —— 31.78
energy 0.39 0.28 0.60     0.52 0.56
maya 24.55 13.05 45.09 24.22 29.16
medical 5.32 2.79 13.03 12.74 12.42
showcase 12.68 7.16 22.31 9.48 14.88
snx 2.96 2.75 3.00 2.70 17.52
SW 35.13 22.44 41.21 6.57 48.08

PCMark 10

We run the PCMark 10 benchmark to test how well systems run common office applications.

Many of these applications have not been optimized to take advantage of the multi-core CPUs or GPUs that modern systems have. This is shown by the score where the Ruby R8 with its 8-core CPU was slightly beaten by the NUC 11 CE system even though it had twice as many CPU cores as it.

PCMark 10
System NUC 10 Pro


NUC 11 CE NUC 11 Pro Ruby R8
  i7-10710U 6 [email protected]


i7-1185G7 4 [email protected]


i5-1135G7 4 [email protected]


AMD Ryzen 7 4800U 8 [email protected]


Total Score  4,268 /4,093 5,112 4,475 4,908
Essentials  8,472 /7,405 9,624 8,725 8,570
Productivity 6,837 /6,657 7,080 6,221 6,638
Digital Content Creation 3,643 /3,775 5,321 4,482 5,642

NUC 8 vs. NUC 10 Pro vs. NUC 11 CE vs. NUC 11 Pro vs. Ruby R8

Invariably, the AMD-powered Ruby R8 will be compared to Intel NUC systems, as these NUCs were designed for similar use cases. Below is a comparison of the key hardware components of all of these systems.

NUC 8 NUC 10 Pro NUC 11 CE NUC 11 Pro Ruby R8
Processor i7-8559U

4 cores / 8 threads

Clock speed 2.7/4.5GHz



6 cores / 12 threads

Clock speed 1.1/4.7 GHz



4 cores / 8 threads

Clock speed 3.0/4.8GHz MAX TDP 28W


4 cores / 8 threads

Clock speed 2.6/4.4GHz MAX TDP 28W

AMD Ryzen 7 4800U 8 [email protected]

Clock speed 1.8/4.2GHz MAX TDP 25W

iGPU Iris Plus Graphics 655

48 Execution Units

Intel UHD Graphics 620

24 Execution Units

Intel Iris Xe Graphics

96 Execution Units

Intel Iris Xe Graphics

96 Execution Units

AMD Radeon Vega 8 Graphics (up to 1.75 GHz, and 8 cores)
Discrete GPU N/A N/A N/A N/A N/A
RAM 32GB DDR4 2400


Support for 32 GB in 2 slots

16GB DDR4 2666


Support for 64 GB in 2 slots

16 GB soldered-down, dual-channel LPDDR4X memory 16GB DDR4 3200


Support for 64 GB in 2 slots

16GB DDR4 3200


Support for 64 GB in 2 slots

Wi-Fi Intel Wireless-AC 9560

Max speed 1.73 Gbps

Intel AX 201

Max speed 2.4 Gbps

Intel Wi-Fi 6 AX 201 Max speed 2.4 Gbps Intel Wi-Fi 6 AX 201 Max speed 2.4 Gbps Intel Wi-Fi 6 AX 200 Max speed 2.4 Gbps
Wired Internet 1 x 1GbE 1 x 1 GbE 2 x 1 GbE

out-of-bound management

1 x 2.5 GbE 1 x 1GbE

1 x 2.5GbE


This is the first NUC-sized system we have reviewed that contains an AMD processor and Radeon Vega 8 iGPU. The AMD Ryzen 7 4800U performed very well in our benchmark tests, equaling the performance of the Intel processor-based systems that we have tested in the past. When compared to systems with an Iris Xe iGPU, the Radeon Vega 8 performed admirably and is in the same class as the Iris XE. Both are solid graphic processors for casual gamers and are perfectly suitable for everyday use with home and office applications. If you are interested, you can read our evaluation of the Iris XE for gaming.

The Ruby R8 does have very good connectivity with its USB port assortment. For storage, it supports an M.2 2240 SATA/NVMe slot which would be good for a boot device, and a PCIe Gen4 x4 m.2 2280 slot for high-performance storage. With its 2.5GbE, 1GbE wired and 2.4MbE wireless network connectivity will not be a problem even for high bandwidth applications.

Overall, this system is comparable in performance to the NUC 11 systems that we recently tested. It is well-suited for home and office power-users who use common office applications, do demanding web-browsing, and moderate content-creation but want, or need, a computer that they can attach to the back of a monitor or that takes up a minimal amount of desktop real estate. We are pleased to see that companies like SimplyNUC are releasing SFF computers with AMD processors that are worthy competitors to Intel NUC’s.

Simply NUC

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