TERRAMASTER 4-Bay 1U Rackmount NAS or TERRAMASTER 4-Bay 8-Core NAS Enclosure? Which TERRAMASTER Model to Buy
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You are comparing the terramaster 4 bay 1u rackmount NAS vs 4 bay 8 core NAS enclosure. Both models offer four drive bays and 8GB of RAM for storage management. The main difference lies in their physical design and processing power. One is a compact 1U rackmount unit with a 12th Gen Intel Core i3. The other is a desktop enclosure powered by an 8-core Intel N305. Each serves different workspace needs.
Key differences
| Aspect | TERRAMASTER 4-Bay 1U Rackmount NAS with 8GB DDR5 | TERRAMASTER 4-Bay 8-Core NAS Enclosure |
|---|---|---|
| Processor | Intel Core i3-1215U (6 cores) | Intel N305/N300 (8 cores) |
| Form Factor | 1U Rackmount | Desktop Enclosure |
| Network Ports | Dual 10GbE | Dual 5GbE |
| NVMe Slots | Dual M.2 | Three M.2 |
| Dimensions | 17.3 x 14.2 x 1.77 inches | 8.62 x 7.13 x 5.91 inches |
Which one should you choose?
Choose TERRAMASTER 4-Bay 1U Rackmount NAS with 8GB DDR5 if
- You need a low-profile unit that fits into a standard equipment rack.
- You require 10GbE network speeds for fast data transfers between servers.
- You prioritize hardware encryption and AES-NI acceleration for business data.
Choose TERRAMASTER 4-Bay 8-Core NAS Enclosure if
- You want to run AI tasks or local large language models via OpenClaw.
- You need three NVMe slots for extensive caching or storage expansion.
- You prefer a desktop form factor that sits on a desk rather than in a rack.
Verdict: The 1U rackmount model suits users who need high-speed networking and server-grade hardware acceleration in a small footprint. The 8-core desktop enclosure is better for those who want AI capabilities, more NVMe slots, and a flexible desktop layout. Your choice depends on whether you prioritize network speed or processing cores.
Rackmount vs Desktop Form Factor
Physical dimensions
The TERRAMASTER U4-500 is a 1U rackmount unit measuring 17.3 inches wide, 14.2 inches long, and 1.77 inches high. It weighs 13.7 pounds and is designed for server racks or dense storage arrays. The TERRAMASTER F4-425 Pro is a desktop enclosure with a much smaller footprint. It measures 8.62 inches long, 7.13 inches wide, and 5.91 inches high. It weighs only 6.39 pounds. You must choose between the space-saving height of the rackmount model and the compact desktop size of the F4-425 Pro. The U4-500 fits standard 19-inch racks, while the F4-425 Pro sits on a desk or shelf.
Processor architecture
The U4-500 uses an Intel Core i3-1215U processor with 6 cores and 8 threads, turboing up to 4.4GHz. It is a 12th Gen mobile-class chip optimized for efficiency in a small form factor. The F4-425 Pro features an Intel N305 or N300, which provides 8 cores. The N300 series is based on the Alder Lake architecture but focuses on high core count for multitasking. The i3-1215U offers higher single-core clock speeds, while the N305/N300 provides more physical cores for parallel workloads. Your choice depends on whether you prioritize burst performance or concurrent task handling.
Network connectivity
The TERRAMASTER U4-500 is equipped with dual 10GbE ports, offering 20Gbps of aggregate bandwidth. It supports SMB multichannel for ultra-fast data transfers, which is critical for high-performance SMBs and 4K video production. The F4-425 Pro has dual 5GbE ports. While it can link-aggregate these ports, the maximum theoretical speed is lower than the U4-500's 10GbE. If you need maximum throughput for large file transfers or virtualization, the U4-500 provides superior network hardware. The F4-425 Pro is sufficient for standard home or small office networks.
NVMe acceleration slots
The U4-500 includes dual M.2 NVMe slots. These work with Hyper Cache technology to boost storage efficiency and speed up backups. The F4-425 Pro offers three M.2 NVMe slots, also utilizing Hyper Cache acceleration. Having an extra slot on the F4-425 Pro allows for more flexible caching configurations or additional SSD storage for virtual machines. Both models use the same caching technology to improve performance. The F4-425 Pro provides slightly more expansion options for NVMe drives within the same 4-bay form factor.
Graphics and encryption
The U4-500 features Intel UHD Graphics running at 1.1GHz, along with AES-NI hardware encryption. This supports accelerated data processing and can handle multimedia tasks. The F4-425 Pro also supports hardware 4K decoding and native compatibility with Plex, Emby, and Jellyfin. It includes AI-powered photo categorization. The U4-500 explicitly mentions AES-NI for security, while the F4-425 Pro emphasizes its AI-native TOS 7 OS and multimedia streaming capabilities. Both handle media well, but the U4-500 highlights its encryption hardware more prominently.
Choose the right TERRAMASTER NAS for you
Enterprise IT needing rackmount hardware
The U4-500 is a 1U rackmount unit with a 12th Gen Intel Core i3-1215U processor. It features dual 10GbE ports for 20Gbps aggregate bandwidth and delivers 2090MB/s sequential writes. This hardware acceleration supports virtualization and high-density storage in server environments.
Home lab and virtualization enthusiast
The F4-425 Pro uses an 8-core Intel N305/N300 CPU and includes three M.2 NVMe slots. It supports Docker Compose, Portainer, and VirtualBox for running containers and VMs. The desktop form factor fits easily on a desk or shelf for personal projects.
Content creator needing fast media access
This model offers dual M.2 NVMe slots with Hyper Cache technology to boost storage efficiency. It provides 450MB/s 4K random IOPS and supports RAID 0/1/5/6/10. The Intel UHD Graphics and AES-NI encryption help with secure, accelerated data processing for video workflows.
User wanting AI and smart features
The F4-425 Pro runs TOS 7, an AI-native OS with OpenClaw integration. It offers natural language commands and native support for Plex, Emby, and Jellyfin. The system includes hardware 4K decoding and a mobile app for managing files from your phone easily.
The products compared
TERRAMASTER 4-Bay 1U Rackmount NAS with 8GB DDR5
Best for: Dense rackmount storage with NVMe caching
- Drive Bays
- 4Bay
- Network Connectivity
- Dual 10GbE
- Processor
- Intel Core i3 1215U
- RAM Capacity
- 8GB DDR5
- Included Storage
- Diskless
- RAID Support
- RAID 0, 1, 5, 6, 10, TRAID, TRAID+
View on Amazon: TERRAMASTER 4-Bay 1U Rackmount NAS with 8GB DDR5 Affiliate link
The TERRAMASTER U4-500 is a 1U rackmount NAS featuring an Intel Core i3-1215U processor and 8GB DDR5 RAM. It includes dual M.2 NVMe slots for Hyper Cache acceleration and dual 10GbE ports for high-speed networking. This diskless unit supports up to 96TB of storage and offers RAID 0/1/5/6/10 configurations. It suits businesses needing dense, high-performance storage in a compact form factor.
Pros
- Intel Core i3-1215U 6-core processor with 8GB DDR5 RAM
- Dual M.2 NVMe slots with Hyper Cache technology
- Dual 10GbE ports with 20Gbps aggregate bandwidth
- Supports RAID 0, 1, 5, 6, 10, and TRAID+
Cons
- Diskless design requires separate drive purchases
- 1U rackmount form factor limits cooling headroom
- Heavier build at 13.7 pounds
Good fit if
- You need dual 10GbE connectivity for fast data transfers
- You require NVMe caching for improved IOPS performance
- You want a compact 1U rackmount solution
Skip if
- You prefer a desktop form factor over rackmount
- You need pre-installed storage drives
- You require more than 4 drive bays
Verdict: The TERRAMASTER U4-500 1U 4-Bay NAS fits IT managers who need high-speed NVMe caching and 10GbE networking in a dense rackmount chassis. It delivers strong business-grade performance for virtualization and video production tasks.
TERRAMASTER 4-Bay 8-Core NAS Enclosure
Best for: power users needing 8-core CPU and NVMe caching
- Drive Bays
- 4-Bay
- Processor
- Intel N350
- RAM Capacity
- 16GB DDR5
- Included Storage
- Diskless
- Hardware Interface
- M.2 NVMe
- Network Connectivity
- 5GbE
View on Amazon: TERRAMASTER 4-Bay 8-Core NAS Enclosure Affiliate link
This TerraMaster F4-425 Pro is a 4-bay NAS powered by an Intel N305 or N300 8-core processor and 8GB of RAM. It includes three M.2 NVMe slots for Hyper Cache acceleration and dual 5GbE ports for network connectivity. The unit runs TOS 7, an AI-native operating system. It suits users needing strong multitasking performance for virtualization, video editing, and media streaming without pre-installed drives.
Pros
- Intel N305/N300 8-core CPU handles multitasking efficiently
- Three M.2 NVMe slots support Hyper Cache acceleration
- Dual 5GbE ports provide link-aggregated speeds up to 1020 MB/s
- TOS 7 OS features AI integration and natural language commands
Cons
- Sold diskless with no included storage drives
- No mention of rackmount compatibility or included rack ears
- Physical dimensions are larger than standard desktop enclosures
Good fit if
- You need high core counts for virtualization or Docker containers
- You want fast local caching via multiple NVMe drives
- You require dual 5GbE network ports for aggregated bandwidth
Skip if
- You need a pre-loaded drive setup for immediate use
- You are building a standard 1U rackmount server
- You prefer a smaller footprint for limited desk space
Verdict: TerraMaster F4-425 Pro 4-Bay NAS delivers robust 8-core performance and extensive caching options for power users. It is ideal for developers and homelab enthusiasts who prioritize processing power and network speed over rackmount form factors.
Specifications side by side
| Spec | TERRAMASTER 4-Bay 1U Rackmount NAS with 8GB DDR5 | TERRAMASTER 4-Bay 8-Core NAS Enclosure |
|---|---|---|
| Drive Bays | 4Bay | 4-Bay |
| Network Connectivity | Dual 10GbE | not stated |
| Processor | Intel Core i3 1215U | Intel N350 |
| RAM Capacity | 8GB DDR5 | 16GB DDR5 |
| Included Storage | Diskless | Diskless |
| RAID Support | RAID 0, 1, 5, 6, 10, TRAID, TRAID+ | not stated |
| Form Factor | Rackmount | not stated |
| Hardware Interface | not stated | M.2 NVMe |
| Number of Bays | 4-Bay | 4-Bay |
| Processor Cores | not stated | 8-Core |
| Dimensions | 14.2 × 17.3 × 1.77 inches | 8.62 × 7.13 × 5.91 inches |
| Weight | 13.7 pounds | 6.39 pounds |
| Size | 4Bay, 1U, 6Core CPU, 8GB RAM | Intel N305, 8GB RAM, Gunmetal Gray |
| Color | Black | Gunmetal Gray |
| Model | U4-500 | F4-425 Pro (N305) |
Frequently asked questions
Which TerraMaster model is better for virtualization tasks?
The TerraMaster U4-500 is the better choice for virtualization. It features an Intel Core processor and 8GB of DDR5 RAM. This configuration provides strong business-grade performance. The 1U rackmount design also allows for dense deployment in server environments. It supports NVMe caching for faster data access during heavy virtual workloads.
Does the TerraMaster F4-425 Pro have more CPU cores than the U4-500?
Yes, the TerraMaster F4-425 Pro has an 8-core processor. The U4-500 uses a 6-core Intel Core CPU. The F4-425 Pro is designed for power users who need extra processing power. This makes it ideal for developers or homelab enthusiasts who prioritize computational speed over rackmount form factors.
Can I install the TerraMaster U4-500 in a standard server rack?
Yes, the TerraMaster U4-500 is a 1U rackmount unit. It measures 1.77 inches in height, which fits standard 19-inch server racks. Its width is 17.3 inches and length is 14.2 inches. This dense form factor is designed for IT managers who need to maximize storage capacity in limited physical space.
What is the weight difference between the two TerraMaster NAS models?
The TerraMaster U4-500 weighs 13.7 pounds. The TerraMaster F4-425 Pro weighs 6.39 pounds. The U4-500 is heavier due to its metal 1U rackmount chassis and internal components. The F4-425 Pro is a desktop enclosure, making it significantly lighter and easier to move for home office setups.
Is the TerraMaster F4-425 Pro suitable for video production workflows?
The TerraMaster F4-425 Pro is suitable for video production if you need high processing power. It features an 8-core CPU and extensive NVMe caching options. This helps handle large media files efficiently. However, it lacks the 10GbE networking found in the U4-500, which might be preferred for faster network transfers in professional studios.
How much RAM does each TerraMaster 4-bay NAS have?
Both models come with 8GB of RAM. The TerraMaster U4-500 uses DDR5 RAM for higher bandwidth. The TerraMaster F4-425 Pro also includes 8GB of RAM to support its 8-core processor. This memory capacity helps manage multiple concurrent tasks and improves overall system responsiveness for both models.