Synology DS423 vs DS423+

Synology DS423 vs DS423+, Plus versus value series.


Full 4-bay range compared:

DS420j – Good for multimedia, but limited to one or two things running simultaneously

DS418 (replaced by DS423) – Good for multimedia using Synology Apps (h264 + h265 support)

DS423   Good for multimedia using Synology Apps (h264 support) (Plex and h265 seem to be an issue)

DS420+(replaced by DS423+)  Good for multimedia and easy backup functions and is upgradeable. Has high availability option

DS423+  Good for multimedia and easy backup functions and is upgradeable. Has high availability option. Now two extra CPU cores for faster speeds and VMs./ Dovker

DS923+ Good for multimedia and easy backup functions and is upgradeable, expandable, has high availability option. Good for video editing and VMs/ Docker.





DS423 vs DS423+ specs compared

Synology 4-bay NAS specs compared
Model DS423 (new) DS423+(new)
Estimated Price $370 (15th March) $499 (15th March)
Processor model Realtek RTD1619B Intel Celeron J4125
Number of CPUs 1 (benchmark score: <1000) 1 (benchmark score: 2985)
processor architecture 64-bit 64-bit
processor clock 4-core 2.0 (base) / 2.7 (turbo) GHz 2-core 2.6 (base) / 3.1 (turbo) GHz
hardware encryption (AES-NI) (AES-NI)
Hardware Transcoding Engine 10-bit H.265 (HEVC), MPEG-4 Part 2, MPEG-2, VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 60 H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30
system memory 2 GB DDR4 non-ECC 2 GB DDR4 non-ECC
RAM slots soldered 2Gb soldered + 1 slot free
MAX RAM upgrades NO 6GB (2GB +4GB)
storage device
Expansion Unit NO NO
Number of HDD bays 4 4
Compatible Disk Type 3.5″ SATA HDD
M.2 2280 NVMe SSD (500MB/s)
M.2 Drive Slots NO 2 (NVMe) (2GB/s per slot) (CACHE OR STORAGE)
PCIe slot NO NO
external port
RJ-45 1GbE LAN port 2 2
USB 2.0 port
USB 3.2 Gen 1 port* 2 2
USB / SD Copy
file system
internal disk Btrfs
Noise value* 22.9 dB(A) 19.8 dB(A)
Power Supply / Transformer 90 W 90 W
power consumption 32.41 W (Access)
4.97 W (HDD Hibernation)
28.3 W (Access)
8.45 W (HDD Hibernation)
BTU 110.52 BTU/hr (Access)
16.95 BTU/hr (HDD Hibernation)
96.5 BTU/hr (Access)
28.81 BTU/hr (HDD Hibernation)
APPs and limits
Maximum number of local user accounts 1,024 2,048
Maximum number of Hybrid Share folders 5 10
The maximum number of cameras 30 40
The maximum number of snapshots 256 1,024
Synology High Availability NO YES
Synology MailPlus / MailPlus Server NO YES
Virtual Machine Manager NO YES
Warranty 2 years 3 years
SHR yes yes
BTRFS yes yes


Synology 4-bay NAS available apps compared

DS423 (2GB RAM) DS423+
Active Backup for Business
Active Backup for Business Agent (DSM)
Active Backup for Google Workspace
Active Backup for Microsoft 365
Active Insight
Advanced Media Extensions
Antivirus by McAfee
Antivirus Essential
Apache HTTP Server 2.4
Audio Station
Bitdefender for MailPlus
C2 Identity Edge Server
Central Management System
Cloud Sync
DHCP Server
DNS Server
Document Viewer
Download Station
exFAT Access
File Station
Git Server
Glacier Backup
Hybrid Share
Hyper Backup
Hyper Backup Vault
iTunes Server
LDAP Server
Log Center
Mail Station
MariaDB 10
Media Server
Migration Assistant
Node.js v12
Node.js v14
Node.js v16
Node.js v18
Note Station
OAuth Service
PDF Viewer
PHP 7.3
PHP 7.4
PHP 8.0
Presto File Server
Proxy Server
Python 3.9
Replication Service
SAN Manager
Secure SignIn Service
SMB Service
SMI-S Provider
Snapshot Replication
SSO Server
Storage Analyzer
Surveillance Station
Surveillance Device Pack
Synology Application Service
Synology Calendar
Synology Chat Server
Synology Contacts
Synology Drive Server
Synology Drive Server
Synology High Availability
Synology Mail Server
Synology MailPlus
Synology MailPlus Server
Synology Office
Synology Photos
Text Editor
Universal Search
Universal Viewer
USB Copy
Video Station
Virtual Machine Manager
VPN Server
Web Station
WebDAV Server


Synology 4-bay NAS Performance compared

SMB 1GbE – Sequential Throughput with HDD (64KB)

MODEL RS422+ DS923+ DS423+ DS423 DS420J
READ 225.77 225.85 226.58 223.90 112.93
WRITE 225.87 225.83 224.00 213.54 112.62

SMB 1GbE – Windows File Transfer with HDD

MODEL RS822(RP)+ RS422+ DS923+ DS423+ DS423 DS420J
WINDOWS DOWNLOAD 87.07 89.22 89.74 87.39 78.23 81.96
WINDOWS UPLOAD 76.36 79.24 80.23 76.00 65.97 68.64

1GbE Web Server – Nginx PHP Response Performance with HDD

MODEL RS822(RP)+ RS422+ DS923+ DS423+ DS423 DS420J
RESPONSES PER SECOND 14,469.82 9,511.32 9,710.53 10,706.80 3,062.56 2,586.49

Check Amazon and other retailers to see if the Synology DS423 NAS is available now using the links to them below (it supports us, costs you nothing extra and me and Eddie who run NASCompares will get a commission that goes directly back into the YouTube channel and blog):

Amazon UK UK 7.43 OFF (WAS 373) [LINK]
Amazon UK UK 14.98 OFF (WAS 500) [LINK]
Amazon usa USA 21.54 OFF (WAS 536) [LINK]
Amazon usa USA 4.94 OFF (WAS 557) [LINK]

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