CWWK AMD 7840HS CPU+Motherboard Combo Deep Dive

CWWK AMD 7840HS NAS Motherboard – Any Good?

If you have been in the market for building your own NAS from scratch on a budget, then if you push past all the Intel Celeron, Pentium and Core CPU+Mobo combos that are flooded in the market, you might well come across this recently revealed AMD powered monster of a CPU+Motherbaord combination – The CWWK AMD-7840HS board. Arriving under several retailer brand (including Topton), this board arrives with an 8 Core CPU that can burst up to 5.1 Ghz, 2.7Ghz int. Gfx, 4x 2.5GbE, a PCIe Gen 4×8 slot, USB 4, 2x Gen 4×2 M,.2 slots an d support for up to 9 SATA drives. I mean.. WOW. The TDP is a little higher than some might like, the ECC support is up for debate (more on that later) and the 20 Lane CPU is definitely being spread out pretty wide – but there is no denying that this is a serious bot of kit. So, what exactly do you get when you pay $499+ for this SoC Mobile CPU and Motherboard combo? What’s the design like? And should you be considering this for your next TrueNAS Build? Let’s take a closer look at the AMD-7840HS NAS board.

Here are a few examples of where you can get this board online: (Topton) 8-Bay / 9-Bay Board AMD-7940HS $489 (AliExpress) HERE (Topton) The AMD-7940HS CPU+Board + 1TB NVMe + 32GB DDR5 + SFF Cables + CPU HS $729 (AliExpress) HERE (KingNovy) Complete Board + AMD-7940HS $509 (AliExpress) HERE Learn more about other Recommended M-ITX CPU+Mobo Combos HERE in an article or HERE on YouTube

Note – Performance Testing and NAS Building are still ‘WiP’ on this board as I wait for the last few components to arrive for YouTube. I will update this article with additional information resources after testing is concluded

Specification	Detail
Architecture	Zen 4 (Phoenix)
Cores / Threads	8 / 16
Base / Boost Frequency	3.8 GHz / 5.1 GHz
TDP (Thermal Design Power)	35 W (Configurable 35-54 W)
Memory Support	DDR5, LPDDR5x up to 7500 MT/s; Dual-channel; ECC support (in specific configurations of CPU)
Integrated Graphics	Radeon 780M; Graphics engine boost clock: 2700MHz
PCI-Express	Gen 4, 20 Lanes (CPU only)
Cache (L1/L2/L3)	64 KB per core / 1 MB per core / 16 MB shared
Process Size	4 nm
Socket Compatibility	FP8
Production Status / Release Date	Active / January 2023
Part Numbers	100-000000955 (FP7r2), 100-000000964 (FP7), 100-000001129 (FP8)
Maximum Temperature (tJMax)	100°C
Features	AVX, AVX2, AVX-512, ECC Memory Support, AMD-V, Precision Boost 2

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CWWK AMD 7840HS Mobo Physical Design

The CWWK 7840HS CPU+Motherboard combo represents a significant leap in compact computing, catering to a wide range of users from enthusiasts to professionals requiring high-performance systems in small form factors.

This combination of AMD’s Ryzen 7 7840HS processor and a feature-rich Mini-ITX motherboard offers an intriguing blend of power, efficiency, and expansion capabilities, making it an ideal choice for various applications, including gaming, content creation, and server use.

The motherboard itself is a lovely bit of engineering, designed with a matte black PCB and a high-density, moisture-free fiber 10-layer circuit board, ensuring both aesthetic appeal and durability. This design philosophy extends to the motherboard’s support for AMD’s “Zen 4” architecture Ryzen™ 5/7/9 series processors, providing users with the ability to choose a CPU that best fits their performance needs without compromising on form factor.

One of the standout features of this motherboard is its expansion capabilities, particularly notable given its 17×17 standard Mini-ITX form factor. It includes a PCI-E x16 slot (PCle4.0 x8 signal) for graphics or network card expansions, two M.2 NVMe (PCle4.0 x2) slots for high-speed storage, and SFF-8643 sockets that support up to four SATA 3.0 connections via cable.

This level of expandability is uncommon in Mini-ITX motherboards, offering users the flexibility to build a compact yet powerful system that can handle demanding applications and storage needs.

Memory support is another area where the 7840HS CPU+Motherboard combo shines. With dual-channel SO-DIMM DDR5 slots supporting up to 5600MHz (and backward compatibility for server-grade ECC notebook memory), it allows for high-speed, reliable memory configurations up to 64GB. This capability is crucial for application ons requiring fast data access and processing, such as video editing and 3D rendering.

HOWEVER, there is definitely a debate as to whether you can actually use ECC memory! CWWK lists 4 different CPU SKUs for this mobo and only 1 of them (the 7735HS) actually supports ECC. So, in order to investigate, I installed 1x 16GB Kingston ECC SODIMM 4800Mhz module and ran some SSH commands. Sadly, it appears that the default 7840HS version of this motherboard combo does NOT support ECC (SEE VIDEO ABOVE)

The combo’s connectivity options are equally impressive, featuring four Intel i226-V 2.5G RJ45 UDE network ports, HDMI+DP+Type-C triple display outputs supporting 4K@60Hz, and multiple USB 3.2 and Type-C interfaces. Such comprehensive connectivity ensures that users can connect a wide array of peripherals, displays, and network connections, making the system versatile for different setups and applications.

The CWWK 7840HS CPU+Motherboard combo is a great example of modern computing’s direction towards more efficient, powerful, and versatile systems within increasingly compact form factors. Whether for gaming, professional work, or server applications, this combo offers a compelling option for those seeking the pinnacle of performance and flexibility in a small package.

Its combination of a high-performance processor, expansive memory and storage options, and robust connectivity makes it a standout choice for enthusiasts and professionals alike.

The CWWK 7840HS CPU+Motherboard combo features ASMedia SATA controllers, specifically the ASM1166 and ASM1164 chips, which are central to its enhanced SATA connectivity. These chips enable the motherboard to efficiently manage SATA connections, ensuring stable and rapid data transfer rates for a range of storage devices.

The inclusion of two SFF-8643 connectors, influenced by these ASMedia components, significantly boosts the motherboard’s storage expansion capabilities. These connectors allow for up to eight SATA devices to be connected through breakout cables, optimizing storage scalability within a compact form factor. However, it’s important to highlight that these connectors do not support NVMe drives, focusing instead on maximizing SATA device compatibility.

This motherboard also boasts a single standard SATA port, complementing the SFF-8643 connectors to offer comprehensive support for SATA-based storage configurations. The strategic integration of ASMedia SATA controllers underscores a commitment to providing versatile and reliable storage solutions, tailored for users prioritizing a balance of speed, capacity, and efficiency in their builds.

The AMD Ryzen 7 7840HS is a notable entry in AMD’s mobile processor lineup, launched in January 2023. Part of the Ryzen 7 series and built on the advanced Zen 4 (Phoenix) architecture, this chip is designed to deliver high performance for laptops and portable devices. With 8 cores and 16 threads thanks to AMD’s Simultaneous Multithreading (SMT), the 7840HS offers substantial multitasking capabilities. Operating at a base frequency of 3.8 GHz with the ability to boost up to 5.1 GHz, it combines speed with efficiency, all within a 35W thermal design power (TDP). This processor also supports DDR5 memory and has integrated Radeon 780M graphics, making it well-suited for both productivity tasks and gaming.

Physically, the Ryzen 7 7840HS is manufactured using TSMC’s 4 nm process technology, which houses 25,000 million transistors on a 178 mm² die. This compact yet powerful CPU is designed for AMD’s Socket FP8, underscoring its mobile-oriented design with a configurable TDP range of 35-54W. It supports a wide range of features, including ECC memory for data integrity and PCI-Express Gen 4 for high-speed component communication.  The Ryzen 7 7840HS stands out with its inclusion of the latest Ryzen AI technology, aimed at enhancing generative AI applications, and its leading-edge Radeon 780M integrated graphics. This combination not only boosts traditional computing tasks but also opens up new possibilities in AI and gaming. The processor’s architecture enables significant improvements in instructions per cycle (IPC), benefiting from larger caches and faster memory support up to LPDDR5x-7500. Its performance is competitive with top-tier processors in its category, reflecting AMD’s commitment to delivering powerful computing solutions.

The discussion around ECC (Error-Correcting Code) memory support on the CWWK 7840HS CPU+Motherboard combo reveals a nuanced landscape of compatibility and performance considerations. While the motherboard touts support for “server-grade ECC” memory, indicating an ability to correct data corruption on-the-fly and enhance system reliability, the reality of ECC support is more complex. It requires alignment across the CPU, motherboard, and the memory itself. The AMD Ryzen 7 7840HS processor, integral to this combo, along with other CPUs offered by CWWK, presents a mixed picture regarding ECC compatibility. Despite AMD’s general support for ECC across many of its CPUs, the specific models available with this motherboard, including the 7840HS, do not officially support ECC, highlighting a disconnect between processor capabilities and motherboard features. This discrepancy underscores the importance of thorough compatibility checks for users who prioritize ECC for its error-correcting capabilities, especially in environments where data integrity is paramount.4

The situation is further complicated by the motherboard’s design and the marketing of DDR5 memory with “on-die ECC,” which does not equate to traditional ECC memory’s error-correcting functionality. This type of ECC, often referred to as a marketing gimmick, fails to provide the same level of error correction and data integrity assurance as server-grade ECC memory. As enthusiasts and professionals debate the motherboard’s ECC support, it becomes evident that while the hardware may technically support ECC, the practical benefits and implementation may fall short without the full cooperation of the CPU and explicit support from the motherboard’s firmware. This scenario leaves users in a precarious position, needing to navigate between marketing claims and technical specifications to determine the true extent of ECC support and its relevance to their specific use cases.

Given the technical details and specifications of the CWWK 7840HS CPU+Motherboard combo, we can infer some positive and negative points about this hardware combination despite the inability to access the specific Reddit page for user insights.

===== Further Testing – COMING SOON =====

Check our YouTube channel for further videos on the AMD-7840HS NAS Motherboard for testing first (such as the video below):

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CWWK AMD 7840HS NAS Motherboard Review Conclusion – Pros and Cons

Spec Highlights – 4x AMD MobileRyzen Options, SODIMM DDR5 Slots×2, ECC Supported, 2×M.2 2280 4×2 SSD Slots, PCIe 4×8 connector ×1 (x16 Physical), SFF-8643 x2 Connectors for SATA III, 4x 2.5GbE, USB 4 (20Gbs Limits) , Internal USB 2.0  – $489 on AliExpress and Check on Amazon

The combination of the AMD “Zen 4” architecture Ryzen™ 5/7/9 series processors with a very unique motherboard offers a high-performance platform that is particularly suitable for building a low scale, but HIGH POWER Network Attached Storage (NAS) server. The Mini-ITX form factor of the motherboard, compatible with 1700 series CPU coolers, ensures that it can fit into compact NAS cases while providing adequate cooling for the powerful processors housed within. In the realm of NAS servers, storage options and connectivity are key. The motherboard’s two M.2 NVMe (PCIe 4.0 x2) slots are ideal for high-speed storage drives that can handle intense read and write operations typical in a NAS environment. The inclusion of 2 * SFF-8643 sockets, which support up to four connections each and a total of 9 SATA 3.0, is an advanced feature that provides flexibility and scalability for storage expansion. This is particularly beneficial for NAS setups where large storage pools and redundancy (such as RAID configurations) are important. Network connectivity is another critical aspect of NAS servers, and this motherboard delivers with its 4 * Intel i226-V 2.5G RJ45 UDE network ports, allowing for high-speed data transfer and network redundancy or link aggregation if required. However, the lack of 10GbE port might limit the network throughput if higher speeds are needed, in which case the PCIe Gen 5×16 slot could be employed for an additional network interface card, although this might be considered an inefficient use of this high-bandwidth expansion slot. Lastly, the wide array of USB ports, including USB3.2 Gen2 Type-C with a 20Gbps rate and additional USB3.2 and USB2.0 ports, adds to the versatility of this motherboard. The built-in set of USB3.2 pin sockets also allow for further expansion and connectivity options, essential for a NAS that may need to accommodate a variety of peripherals or provide additional data transfer interfaces.

PROS High-Performance CPU: The AMD Ryzen 7 7840HS processor, with 8 cores and 16 threads capable of reaching up to 5.1GHz, offers excellent performance for demanding applications and multitasking. This makes the combo suitable for high-end gaming, content creation, and computational tasks. Comprehensive Connectivity and Expansion: The motherboard’s design, featuring a PCI-E x16 slot (physically, in reality it is x8 operational), dual M.2 NVMe slots, multiple SATA3.0 connections, and 2.5G RJ45 network ports, provides a wide range of connectivity options. This allows for extensive storage solutions, high-speed internet connectivity, and the possibility of graphics or network card expansions, making it versatile for various use cases. Advanced Memory Support: With dual-channel SO-DIMM DDR5 slots supporting up to 5600MHz and server-grade ECC notebook memory (still being investigated about it’s compatibility in Mobo vs CPU in the 7840HS), the combo offers cutting-edge memory technology with high-speed and reliable memory options, beneficial for workstations and servers requiring error correction for stability. Efficient Power Consumption: The TDP rating of 35-54W for the CPU indicates efficient power usage, which is crucial for keeping the system cool and reducing energy costs, particularly in environments where the system might be running continuously, such as servers or media centers. Compact and Durable Design: The Mini-ITX form factor is ideal for users looking to build small, space-efficient systems without compromising on performance. Additionally, the high-quality, moisture-free fiber circuit board with full protection enhances the durability and longevity of the motherboard.

CONS Power Supply Requirements: The recommendation to use a power supply of more than 500W with 9 disks may necessitate a higher initial investment for users aiming to fully utilize the motherboard’s storage capabilities, especially in compact builds where space and cooling for large power supplies can be a concern. Complexity for Beginners: The wealth of features and expansion options, while beneficial for experienced users, may overwhelm beginners. The technical nature of managing multiple storage devices, optimizing memory configurations, and ensuring compatibility with various components requires a certain level of expertise. Limited PCI-E Bandwidth: The single PCI-E x16 slot operating at x8 signal might limit the performance of high-end graphics cards or other PCI-E devices. This could be a bottleneck for users aiming to achieve maximum graphical performance or looking to install multiple high-bandwidth PCI-E cards. Cost: Given the high-end specifications and features, the CWWK 7840HS combo is likely to carry a premium price tag. This cost might be prohibitive for budget-conscious builders or those who do not require the advanced features offered by this combo. Cooling Considerations: The compact Mini-ITX form factor, while advantageous for space-saving, may present challenges in terms of cooling, especially when housing high-performance components like the Ryzen 7840HS. Users will need to carefully consider cooling solutions to maintain optimal temperatures and prevent thermal throttling.

 

Here are a few examples of where you can get this board online: (Topton) 8-Bay / 9-Bay Board AMD-7940HS $489 (AliExpress) HERE (Topton) The AMD-7940HS CPU+Board + 1TB NVMe + 32GB DDR5 + SFF Cables + CPU HS $729 (AliExpress) HERE (KingNovy) Complete Board + AMD-7940HS $509 (AliExpress) HERE Learn more about other Recommended M-ITX CPU+Mobo Combos HERE in an article or HERE on YouTube

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