Synology 4-Bay AMD Ryzen NAS Alternatives: 6 Similar Picks Compared
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You might be looking for synology ds925 4 bay diskstation alternatives because your needs differ from the standard model. The Synology DS925+ delivers strong throughput with an AMD Ryzen V1500B processor and dual 2.5GbE ports. It supports expansion up to 9 bays via the DX525. However, you may prefer different networking speeds, more RAM, or a different brand ecosystem. Some users need ECC memory for business stability, while others prioritize quiet operation or specific cache options. These variations explain why you might want to explore other 4-bay chassis.
This list compares 6 similar picks based on overlapping specifications. We selected these models because they share key traits with the DS925+, such as 4-bay capacity and AMD Ryzen or comparable quad-core processors. You will find options with higher RAM capacities, like 16GB, or faster 10GbE connectivity. Other picks focus on Intel processors for specific workloads or include hardware encryption features. By comparing these specs, you can identify the drive that matches your exact requirements for storage, networking, and processing power without relying on subjective ratings.
Our top pick: Synology 4-Bay AMD Ryzen NAS.
How these alternatives compare to the DS925+
Synology 4-Bay 16TB NAS
This bundle includes 16TB of storage and ECC RAM, which the standard DS925+ lacks. ECC memory corrects data errors, making it better for business environments where data integrity is critical. It retains the dual 2.5GbE ports and AMD Ryzen processor for familiar performance. You get immediate capacity without buying drives separately. However, the fixed storage means less flexibility to upgrade individual drives later compared to the bare DS925+ unit. Choose this if you need enterprise-grade memory stability and pre-loaded capacity right away.
Synology 4-Bay Intel Quad-Core NAS
The DS920+ uses an Intel Quad-Core processor instead of AMD Ryzen. It offers hardware encryption, a feature not listed for the DS925+. It supports NVMe cache for speed boosts. You give up the newer AMD architecture and dual 2.5GbE ports found in the DS925+. The networking is slower, likely single Gigabit. This model fits users who prioritize encryption and established Intel performance over the latest Ryzen specs. It is a budget-friendly option if you do not need high-speed network redundancy or the specific AMD processor benefits.
Asustor Lockerstor 4-Bay Quad-Core NAS
The Asustor AS6604T features a Quad-Core processor and supports SSD caching via M.2 NVMe slots. It includes dual 2.5GbE ports plus a 5GbE port, offering more networking flexibility than the DS925+. You gain access to Asustor’s ecosystem and potentially lower costs. However, you lose Synology’s software ecosystem and the specific AMD Ryzen V1500B processor. The build is slightly heavier. Pick this if you value diverse network speeds and SSD caching options over Synology’s specific software features and AMD hardware.
TERRAMASTER 4-Bay Intel Quad-Core NAS
The TerraMaster F4-425 uses an Intel Quad-Core processor, differing from the AMD Ryzen in the DS925+. It is designed for quiet operation, making it suitable for home media servers. You get 4GB of RAM and 4-bay storage. You give up the dual 2.5GbE ports and the AMD architecture. The networking is likely standard Gigabit. This model is ideal if you prioritize quiet performance and Intel compatibility over high-speed networking and the specific Ryzen processor capabilities found in the Synology DS925+.
Synology 2-Bay AMD Ryzen NAS
The DS725+ is a 2-Bay model, significantly smaller than the 4-Bay DS925+. It uses AMD Ryzen and includes NVMe caching. It offers triple network ports: 5GbE, 2.5GbE, and 1GbE, providing more connectivity options than the DS925+. You sacrifice half the drive bays and expansion capability. This model suits small offices or home users who need compact storage with high-speed network options. It is a better fit if space is limited and you do not need the large capacity of a 4-bay system.
Asustor Lockerstor 4-Bay 10GbE NAS
The Asustor AS6804T offers 16GB of RAM, far exceeding the 4GB in the DS925+. It includes 10GbE and 5GbE ports, providing much higher network throughput. It uses an AMD Ryzen Quad-Core processor and supports M.2 NVMe caching. You gain enterprise-grade memory and superior networking speed. You lose the compact 4-bay form factor and Synology’s software ecosystem. This model is for power users who need massive RAM and 10GbE speeds for heavy virtualization or large file transfers, prioritizing raw performance over compact size.
Quick picks
Our 7 picks
Synology 4-Bay AMD Ryzen NAS
Best for: Users needing dual 2.5GbE ports and expandability
- Drive Bays
- 4-Bay (up to 9-Bay)
- Network Connectivity
- 2x 2.5GbE
- Processor
- AMD Ryzen V1500B
- RAM Capacity
- 4GB
- Dimensions
- 11.4 × 10.2 × 9.45 inches
- Weight
- 4.98 pounds
View on Amazon: Synology 4-Bay AMD Ryzen NAS Affiliate link
The Synology DS925+ is a 4-bay NAS drive powered by an AMD Ryzen V1500B processor and 4GB of RAM. It delivers sequential read and write speeds up to 565 MB/s. Dual 2.5GbE ports provide fast networking and redundancy. You can expand storage up to 9 bays using the DX525. This unit suits users needing reliable performance for file management, virtualization, and surveillance tasks.
Pros
- AMD Ryzen V1500B processor for dependable performance
- Dual 2.5GbE ports for fast and flexible networking
- Up to 565 MB/s sequential write throughput
- Expandable to 9 bays with DX525
Cons
- 4GB RAM may limit heavy virtualization workloads
- Compatible only with Synology branded drives
- Standard 3-year warranty is shorter than some competitors
Good fit if
- You need dual 2.5GbE ports for network redundancy
- You want to expand storage beyond 4 bays
- You require stable throughput for file and photo management
Skip if
- You need more than 4GB of RAM for virtualization
- You prefer to use third-party hard drives
- You want a warranty longer than 3 years standard
Verdict: Synology DS925+ 4-Bay NAS offers strong throughput and expandability for users who need dual 2.5GbE ports and plan to grow their storage capacity over time.
Synology 4-Bay 16TB NAS
Best for: Business users needing ECC RAM
- Drive Bays
- 4-Bay
- Network Connectivity
- 2x 2.5GbE
- Processor
- AMD Ryzen V1500B Quad-Core
- RAM Capacity
- 4 GB DDR4 ECC
- M.2 NVMe Slots
- 2 slots
- Included Storage
- 16TB
View on Amazon: Synology 4-Bay 16TB NAS Affiliate link
This Synology bundle includes a 4-bay NAS with an AMD Ryzen V1500B processor and 4 GB of DDR4 ECC RAM. It features dual 2.5 GbE ports and two M.2 NVMe slots for cache or storage. The package comes with four 4TB Seagate Ironwolf drives for a total of 16TB. You get a robust system for small business data storage, virtualization, and video surveillance.
Pros
- AMD Ryzen V1500B quad-core processor
- 4 GB DDR4 ECC memory
- Dual 2.5 GbE LAN ports
- Two M.2 NVMe slots
- Includes 16TB of storage
Cons
- Only 4 GB of RAM included
- No warranty information listed
- Higher weight at 13.2 pounds
Good fit if
- You need dual 2.5 GbE connectivity
- You want ECC memory for stability
- You require a 16TB storage bundle
Skip if
- You need more than 4 drive bays
- You require 10 GbE network speeds
- You want a diskless unit only
Verdict: Synology DS925+ 16TB NAS Bundle is a solid choice for users who need ECC memory and dual 2.5 GbE ports for business environments.
Synology 4-Bay Intel Quad-Core NAS
Best for: Users needing NVMe cache and hardware encryption
- Drive Bays
- 4-Bay
- Processor
- Intel quad-core
- RAM Capacity
- 4GB DDR4
- Included Storage
- Diskless
- Dimensions
- 8.78 × 7.83 × 6.54 inches
- Weight
- 4.94 pounds
View on Amazon: Synology 4-Bay Intel Quad-Core NAS Affiliate link
The Synology DS920+ is a 4-bay NAS with a quad-core Intel processor and 4 GB DDR4 RAM. It supports up to 9 drives via expansion. Two M.2 NVMe slots allow cache acceleration. It delivers over 225 MB/s read and write speeds. It includes two camera licenses by default. This model suits users needing scalable storage and hardware encryption.
Pros
- 4-bay capacity expandable to 9 drives
- Two M.2 NVMe SSD slots for cache
- Over 225 MB/s sequential read/write
- AES-NI hardware encryption engine
- Two built-in camera licenses included
Cons
- Uses older Intel processor instead of AMD Ryzen
- No 2.5GbE ports listed in specifications
- Heavier at 4.94 pounds compared to lighter alternatives
Good fit if
- You want a 4-bay NAS with NVMe cache support
- You need hardware encryption for data security
- You plan to expand storage with a DX517 unit
Skip if
- You require AMD Ryzen processors
- You need built-in 2.5GbE networking
- You prefer a lighter and more compact chassis
Verdict: The Synology DS920+ 4-Bay NAS offers reliable 4-bay storage with NVMe cache options and hardware encryption. It fits users who prioritize expandability and encryption over the latest AMD Ryzen processors or high-speed networking ports.
Asustor Lockerstor 4-Bay Quad-Core NAS
Best for: Users needing 2.5GbE ports and SSD caching
- Drive Bays
- 4-Bay
- Network Connectivity
- 2x 2.5GbE
- Processor
- Quad-Core 2.0GHz
- RAM Capacity
- 4GB DDR4
- M.2 NVMe Slots
- 2 slots
- Included Storage
- Diskless
View on Amazon: Asustor Lockerstor 4-Bay Quad-Core NAS Affiliate link
The Asustor Lockerstor 4 AS6604T is a 4-bay NAS with a Quad-Core 2.0GHz processor and 4GB DDR4 RAM. It features two 2.5GbE ports and two M.2 NVMe slots for SSD caching. This diskless unit supports over 200 apps and includes four free IP camera licenses. It suits users needing reliable local storage with flexible expansion options for media or backup tasks.
Pros
- Quad-Core 2.0GHz processor for multitasking
- Two 2.5GbE network ports for faster transfers
- Two M.2 NVMe slots for SSD caching
- Includes four free IP camera licenses
Cons
- Lower 2.0GHz clock speed compared to competitors
- Fixed 4GB RAM with no upgrade path listed
- Diskless design requires separate drive purchase
Good fit if
- You need fast local network speeds with 2.5GbE ports
- You want to use SSDs for caching or storage
- You plan to connect multiple IP cameras to the system
Skip if
- You require pre-installed drives for immediate use
- You need a processor with higher clock speeds
- You prefer a system with more than four drive bays
Verdict: Asustor Lockerstor 4 AS6604T fits users who prioritize network speed and SSD caching flexibility over raw CPU clock speed in a 4-bay chassis.
TERRAMASTER 4-Bay Intel Quad-Core NAS
Best for: Quiet home media servers with Intel CPUs
- Drive Bays
- 4-Bay
- Network Connectivity
- 2.5GbE
- Processor
- Intel x86 quad-core
- RAM Capacity
- 4GB
- Included Storage
- Diskless
- RAID Support
- TRAID, TRAID+
View on Amazon: TERRAMASTER 4-Bay Intel Quad-Core NAS Affiliate link
The TerraMaster F4-425 is a 4-bay NAS powered by an Intel x86 quad-core processor and 4GB of RAM. It features a single 2.5GbE port for fast transfers and supports up to 120TB of storage. The device includes hardware 4K decoding for media servers and operates quietly at 21dB. It suits users needing reliable local storage with mobile app control and flexible RAID options.
Pros
- Intel x86 quad-core processor handles 4K transcoding
- 4GB RAM supports multitasking and concurrent access
- Single 2.5GbE port for faster network transfers
- Tool-free push-lock HDD trays for quick installation
- Operates at a quiet 21dB(A)
Cons
- Only one 2.5GbE port limits network redundancy
- No mention of dual-gigabit Ethernet for backup links
- 4GB RAM is lower than the 4GB+ Ryzen options in this list
Good fit if
- You want a quiet NAS for a bedroom or living area
- You need hardware 4K decoding for Plex or Emby
- You prefer Intel-based architecture over AMD Ryzen
Skip if
- You require dual 2.5GbE or 10GbE ports for network redundancy
- You need more than 4GB of RAM for heavy virtualization
- You are already using Synology and want seamless ecosystem integration
Verdict: TerraMaster F4-425 4-Bay NAS offers solid Intel performance and quiet operation for users prioritizing media handling and ease of drive installation over network redundancy.
Synology 2-Bay AMD Ryzen NAS
Best for: Compact home storage with NVMe cache
- Drive Bays
- 2-Bay
- Network Connectivity
- 1x 2.5GbE, 1x 1GbE
- Processor
- Ryzen R1600
- RAM Capacity
- 4GB
- M.2 NVMe Slots
- 2 slots
- Included Storage
- 8TB
View on Amazon: Synology 2-Bay AMD Ryzen NAS Affiliate link
The Synology DS725+ is a compact 2-bay NAS designed for home and small-office use. It features an AMD Ryzen R1600 quad-core processor and 4GB of RAM for smooth multitasking. You get one 2.5GbE and one 1GbE port, plus two M.2 NVMe slots for cache. This unit supports up to 276 MB/s read speeds and expands via a DX525 unit.
Pros
- AMD Ryzen R1600 quad-core processor
- 2x M.2 NVMe slots for caching
- 1x 2.5GbE and 1x 1GbE ports
- Up to 276 MB/s sequential read throughput
Cons
- Only 2 drive bays limit total storage
- No second 2.5GbE port for link aggregation
- Lower port speed than 4-bay competitors
Good fit if
- You need a small footprint for home use
- You want NVMe cache support
- You prefer Synology software
Skip if
- You require 4 drive bays
- You need dual 2.5GbE ports
- You want a rackmount form factor
Verdict: Synology DS725+ 2-Bay Ryzen NAS fits users who need compact storage with NVMe caching. It suits small offices that value Synology's ecosystem over raw bay count.
Asustor Lockerstor 4-Bay 10GbE NAS
Best for: High-RAM NAS with 10GbE and NVMe slots
- Drive Bays
- 4 Bay
- Network Connectivity
- Dual 5GbE, Dual 10GbE
- Processor
- AMD Ryzen Quad-Core 2.3 GHz
- RAM Capacity
- 16GB ECC DDR5
- M.2 NVMe Slots
- 4 M.2 NVMe Slots
- Included Storage
- Diskless
View on Amazon: Asustor Lockerstor 4-Bay 10GbE NAS Affiliate link
The Asustor AS6804T is a 4-bay NAS built for high-performance caching and virtualization. It features a 2.3 GHz AMD Ryzen quad-core processor and 16GB of ECC DDR5 RAM. You get four M.2 NVMe slots for fast storage expansion and dual 10GbE plus dual 5GbE ports for heavy network traffic. This unit suits users who need substantial memory and high-speed connectivity for demanding tasks.
Pros
- 16GB ECC DDR5 RAM capacity
- Four M.2 NVMe slots for SSD caching
- Dual 10GbE and dual 5GbE network ports
- AMD Ryzen quad-core 2.3 GHz processor
Cons
- Larger physical dimensions than compact 4-bay units
- No included hard drives (diskless)
- Higher power draw due to 10GbE and ECC memory
Good fit if
- You need 16GB of RAM for virtual machines
- You require 10GbE network speeds for local transfers
- You want to use multiple NVMe SSDs for caching
Skip if
- You need a small footprint for tight spaces
- You want a pre-loaded NAS with drives
- You only require 1GbE or 2.5GbE connectivity
Verdict: Asustor AS6804T 4-Bay NAS with 16GB RAM delivers enterprise-grade memory and networking for power users who prioritize speed and expansion over compact size.
Specifications side by side
| Spec | Synology 4-Bay AMD Ryzen NAS | Synology 4-Bay 16TB NAS | Synology 4-Bay Intel Quad-Core NAS | Asustor Lockerstor 4-Bay Quad-Core NAS | TERRAMASTER 4-Bay Intel Quad-Core NAS | Synology 2-Bay AMD Ryzen NAS | Asustor Lockerstor 4-Bay 10GbE NAS |
|---|---|---|---|---|---|---|---|
| Drive Bays | 4-Bay (up to 9-Bay) | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 2-Bay | 4 Bay |
| Network Connectivity | 2x 2.5GbE | 2x 2.5GbE | not stated | 2x 2.5GbE | 2.5GbE | 1x 2.5GbE, 1x 1GbE | Dual 5GbE, Dual 10GbE |
| Processor | AMD Ryzen V1500B | AMD Ryzen V1500B Quad-Core | Intel quad-core | Quad-Core 2.0GHz | Intel x86 quad-core | Ryzen R1600 | AMD Ryzen Quad-Core 2.3 GHz |
| RAM Capacity | 4GB | 4 GB DDR4 ECC | 4GB DDR4 | 4GB DDR4 | 4GB | 4GB | 16GB ECC DDR5 |
| M.2 NVMe Slots | not stated | 2 slots | not stated | 2 slots | not stated | 2 slots | 4 M.2 NVMe Slots |
| Included Storage | not stated | 16TB | Diskless | Diskless | Diskless | 8TB | Diskless |
| RAID Support | not stated | not stated | not stated | not stated | TRAID, TRAID+ | not stated | not stated |
| Hardware Interface | not stated | not stated | not stated | M.2 NVMe | not stated | M.2 NVMe | M.2 NVMe |
| Number of Bays | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 2-Bay | 4-Bay |
| Processor Cores | not stated | not stated | not stated | Quad-Core | Quad-Core | not stated | Quad-Core |
| Intended Use | not stated | not stated | not stated | not stated | Home Users | not stated | not stated |
| Dimensions | 11.4 × 10.2 × 9.45 inches | not stated | 8.78 × 7.83 × 6.54 inches | 9.06 × 6.69 × 7.3 inches | 8.74 × 7.05 × 6.06 inches | 8.78 × 4.17 × 6.54 inches | 13 × 12 × 10 inches |
| Weight | 4.98 pounds | 13.2 pounds | 4.94 pounds | 6.53 pounds | 4.19 pounds | 6.61 pounds | not stated |
| Size | 29 cm x 26 cm x 25 cm | 16TB | DS920+ | 4 Bay | 4Bay, F4-425 | 6.54 inches H x 4.17 inches W x 8.78 inches D | not stated |
| Color | black | not stated | Black | AS6604T | Black | gray | not stated |
| Model | DS925+ | DS925+/8TB-IW | DS920+ | AS6604T | F4-425 | DS725+/8TB-IW | AS6804T |
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Frequently asked questions
Which Synology NAS is best for users needing dual 2.5GbE ports?
The Synology DS925+ is the top pick for this requirement. It features an AMD Ryzen processor and dual 2.5GbE network ports. This setup provides strong throughput and allows for easy expansion. You can grow your storage capacity over time by connecting additional enclosures. It fits users who prioritize network speed and future growth potential.
What is the best Synology option for business environments requiring ECC RAM?
The Synology DS925+ 16TB NAS Bundle is ideal for business use. It includes ECC memory, which corrects data errors to maintain integrity. This bundle also offers dual 2.5 GbE ports for reliable connectivity. It is a solid choice when data safety and network performance are critical for your operations.
Is there a budget-friendly Synology NAS with NVMe cache support?
The Synology DS920+ serves as the best budget option. It supports NVMe cache for improved performance and includes hardware encryption for security. While it uses an Intel Quad-Core processor instead of AMD Ryzen, it offers reliable 4-bay storage. This model suits users who value expandability and encryption over the latest CPU technology.
Which Asustor NAS offers 2.5GbE ports and SSD caching?
The Asustor Lockerstor 4 AS6604T is a strong alternative. It features 2.5GbE and 5GbE network connectivity for faster data transfer. The device supports SSD caching via M.2 NVMe slots to boost speed. It fits users who prioritize network performance and caching flexibility over raw CPU clock speed in a compact 4-bay chassis.
Which NAS is best for quiet home media servers?
The TerraMaster F4-425 is designed for quiet operation. It uses an Intel Quad-Core processor to handle media tasks efficiently. This 4-bay NAS prioritizes ease of drive installation and media handling. It is a suitable choice for home users who value low noise levels and straightforward setup over advanced network redundancy features.
What is the best compact Synology NAS with NVMe cache?
The Synology DS725+ is the best 2-bay option. It features an AMD Ryzen processor and supports NVMe caching for enhanced performance. The device includes 5GbE, 2.5GbE, and 1GbE ports for flexible networking. It suits small offices that value Synology's ecosystem and compact size over having more drive bays.
Which NAS offers 16GB RAM and 10GbE connectivity?
The Asustor AS6804T delivers enterprise-grade specifications. It includes 16GB of RAM and 10GbE network ports for high-speed data transfer. The device also features M.2 NVMe slots and an AMD Ryzen Quad-Core processor. It is designed for power users who prioritize speed and expansion capabilities over a compact physical footprint.