Product comparison · 2 nas & storage servers

QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531 vs QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521

130specifications compared
21differ
109identical
29known for one product only

Key differences

The QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 has 0.2 GHz more processor frequency than the QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531 (2.4 GHz vs 2.2 GHz). The QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531 has 2 more processor cores than the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 (6 vs 4). The QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531 has 4 more processor threads than the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 (12 vs 8). RAID levels: 0, 1, 5, 6, 10, 50, 60, JBOD on the QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531, 0, 1, 5, 6, JBOD on the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521. Processor model: D-1531 on the QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531, D-1521 on the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521.

RAID levels
- TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531:0, 1, 5, 6, 10, 50, 60, JBOD
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:0, 1, 5, 6, JBOD
Processor model
- TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531:D-1531
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:D-1521
Processor frequency
- TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531:2.2 GHz
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:2.4 GHz
Processor cores
- TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531:6
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:4
Processor threads
- TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531:12
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:8
Processor cache
- TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531:9 MB
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:6 MB
Processor code
- TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531:SR2DG
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:SR2DF
Internal memory
- TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531:16 GB
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:8 GB

Side by side

Differences highlightedShow differences only

Comparison of TS-1685-D1521-16G-550W, TS-1685-D1521-8G
159 specifications	A QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531 Model TS-1685-D1521-16G-550W View product	B QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 Model TS-1685-D1521-8G View product
Storage1 differ
Storage drives installed	Yes	Yes
Total installed storage capacity	128 TB	128 TB
Number of storage drives installed	16	16
Number of storage drives supported	16	16
Installed storage drive type	HDD	HDD
Supported storage drive types	HDD & SSD	HDD & SSD
Storage drive capacity	8 TB	8 TB
Supported storage drive interfaces	M.2, Serial ATA III	M.2, Serial ATA III
Storage drive sizes supported	2.5,3.5"	2.5,3.5"
Number of M.2 (M & B) slotsKnown for one	6	Unknown — not stated by the source
RAID support	Yes	Yes
RAID levelsDiffers	0, 1, 5, 6, 10, 50, 60, JBOD	0, 1, 5, 6, JBOD
Online RAID migrationKnown for one	Yes	Unknown — not stated by the source
Online RAID expansionKnown for one	Yes	Unknown — not stated by the source
Hot-swap drive bays	Yes	Yes
Supported file systems	FAT32, HFS+, NTFS, ext3, ext4	FAT32, HFS+, NTFS, ext3, ext4
Bad block scanKnown for one	Yes	Unknown — not stated by the source
Storage drive sizeKnown for one	Unknown — not stated by the source	2.5/3.5"
Processor6 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Xeon® D	Intel® Xeon® D
Processor modelDiffers	D-1531	D-1521
Processor frequencyDiffers	2.2 GHz	2.4 GHz
Processor boost frequency	2.7 GHz	2.7 GHz
Processor coresDiffers	6	4
Processor threadsDiffers	12	8
Processor cacheDiffers	9 MB	6 MB
CPU configuration (max)	1	1
ECC supported by processor	Yes	Yes
PCI Express configurations	1x16, 1x4, 1x8	1x16, 1x4, 1x8
PCI Express slots version	2.0, 3.0	2.0, 3.0
Processor cache typeKnown for one	L3	Unknown — not stated by the source
Processor codeDiffers	SR2DG	SR2DF
Processor codename	Broadwell	Broadwell
Processor lithography	14 nm	14 nm
Processor operating modes	64-bit	64-bit
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Processor series	Intel Xeon D-1500	Intel Xeon D-1500
Processor socket	BGA 1667	BGA 1667
Scalability	1S	1S
Stepping	V2	V2
Thermal Design Power (TDP)	45 W	45 W
Maximum internal memory supported by processor	128 GB	128 GB
Conflict-Free processor	Yes	Yes
Memory1 differ
Internal memoryDiffers	16 GB	8 GB
Internal memory type	DDR4	DDR4
Maximum RAM supported	128 GB	128 GB
Memory form factorKnown for one	RDIMM	Unknown — not stated by the source
Memory slotsKnown for one	4	Unknown — not stated by the source
Flash memory	512 MB	512 MB
Network2 differ
Ethernet LAN	Yes	Yes
Ethernet LAN data ratesDiffers	1000,10000 Mbit/s	10,100,1000,10000 Mbit/s
Ethernet LAN data rate supported (max)Known for one	10000 Mbit/s	Unknown — not stated by the source
Copper ethernet cabling technologyKnown for one	10GBASE-T, 1000BASE-T	Unknown — not stated by the source
Wi-Fi	No	No
DHCP client	Yes	Yes
DHCP server	Yes	Yes
Jumbo frames support	Yes	Yes
iSCSI support	Yes	Yes
Wake-on-LAN ready	Yes	Yes
Supported network protocolsDiffers	TCP/IP	IPv4, IPv6, MB2/SMB3, NFS v3/NFS v4, FTP, FTPS, TFTP, HTTP, HTTPS, SSH, iSCSI, SNMP, SMTP, SMSC
Link aggregationKnown for one	Unknown — not stated by the source	Yes
Ports & interfaces2 differ
Ethernet LAN (RJ-45) ports	6	6
USB port	Yes	Yes
USB 2.0 ports quantityDiffers	0	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	3	1
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	0	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	0	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity	0	0
Fiber ports quantity	0	0
VGA (D-Sub) ports quantity	0	0
eSATA ports quantity	0	0
HDMI ports quantity	0	0
Serial ports quantity	0	0
3.5 mm (1/8-inch) outKnown for one	Yes	Unknown — not stated by the source
Thunderbolt 2 ports quantity	0	0
Thunderbolt ports quantity	0	0
PCI Express x8 (Gen 3.x) slotsKnown for one	2	Unknown — not stated by the source
RS-232 portsKnown for one	Unknown — not stated by the source	0
Thunderbolt 3 ports quantityKnown for one	Unknown — not stated by the source	0
Design2 differ
Chassis typeDiffers	Desktop	Tower
Cooling type	Active	Active
Product colour	Black	Black
Number of fans	5 fan(s)	5 fan(s)
Fan diameter	9.2 cm	9.2 cm
Fan diameter 2	9 cm	9 cm
LED indicatorsDiffers	HDD, SSD, System	Yes
Built-in display	Yes	Yes
Display type	LCD	LCD
Built-in speaker(s)Known for one	Yes	Unknown — not stated by the source
Number of built-in speakersKnown for one	1	Unknown — not stated by the source
Performance4 differ
Type	NAS	NAS
Device classDiffers	Large Enterprise Business	Home & Home Office
Backup function	Yes	Yes
Backup featuresDiffers	Cloud, USB drive, iSCSI LUN	Cloud, iSCSI LUN
Multilingual support	Yes	Yes
Noise levelKnown for one	22.5 dB	Unknown — not stated by the source
Share folder access right managementKnown for one	Yes	Unknown — not stated by the source
Web-based management	Yes	Yes
Access Control List (ACL)	Yes	Yes
Backup buttonKnown for one	Yes	Unknown — not stated by the source
Browser supportedDiffers	Internet Explorer 10+, Chrome, Firefox, Safari 7+	Internet Explorer 10, Firefox 8, Safari 4, Google Chrome
On/off switch	Yes	Yes
Reset button	Yes	Yes
S.M.A.R.T. support	Yes	Yes
Security algorithmsDiffers	256-bit AES, FIPS 140-2, HTTPS, SNMP, SNMPv3, SSL/TLS	256-bit AES, FIPS 140-2, SNMP, SNMPv3, SSH
Share folder	CIFS/SMB	CIFS/SMB
System log	Yes	Yes
Universal Plug and Play (UPnP)	Yes	Yes
Built-in FTP serverKnown for one	Unknown — not stated by the source	Yes
Built-in iTunes serverKnown for one	Unknown — not stated by the source	Yes
Hot spareKnown for one	Unknown — not stated by the source	Yes
Password authenticationKnown for one	Unknown — not stated by the source	Yes
Software1 differ
Operating system version	4.3	4.3
Windows operating systems supported	Windows 10, Windows 7, Windows 8	Windows 10, Windows 7, Windows 8
Linux operating systems supported	Yes	Yes
Mac operating systems supportedDiffers	Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks	Yes
Server operating systems supported	Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016	Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
Operating system installedKnown for one	Unknown — not stated by the source	QNAP Turbo System
Power1 differ
Power supply location	Built-in	Built-in
Power supply unit (PSU) capacityDiffers	550 W	250 W
Number of power supply unitsKnown for one	1	Unknown — not stated by the source
Power consumption (typical)	127 W	127 W
Power consumption (sleep)	61.36 W	61.36 W
AC input voltage	100 - 240 V	100 - 240 V
AC input frequency	50 - 60 Hz	50 - 60 Hz
Output currentKnown for one	3 A	Unknown — not stated by the source
Fan voltageKnown for one	Unknown — not stated by the source	12 V
Weight & dimensionsidentical
Width	369.9 mm	369.9 mm
Depth	319.8 mm	319.8 mm
Height	303.8 mm	303.8 mm
Packaging contentidentical
Cables included	AC, LAN (RJ-45)	AC, LAN (RJ-45)
Quick installation guide	Yes	Yes
Processor special featuresidentical
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel Secure Key Technology version	1.00	1.00
Intel TSX-NI	Yes	Yes
Intel TSX-NI version	1.00	1.00
Intel Trusted Execution Technology	Yes	Yes
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® OS Guard	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® Turbo Boost Technology	2.0	2.0
Maximum number of PCI Express lanes	32	32
Thermal Monitoring Technologies	Yes	Yes
UART	Yes	Yes
Memory channels supported by processor	Dual	Dual
Memory types supported by processor	DDR3-SDRAM, DDR4-SDRAM	DDR3-SDRAM, DDR4-SDRAM
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Operating relative humidity (H-H)	5 - 95%	5 - 95%
Other features1 differ
Processor ARK IDDiffers	91203	91202
Digital Living Network Alliance (DLNA) certifiedKnown for one	Unknown — not stated by the source	Yes

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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