QNAP TS-439 Pro II/2TB vs QNAP TS-439 Pro II/4TB

Comparison of TS-439 Pro II/2TB, TS-439 Pro II/4TB

62 specifications	A QNAP TS-439 Pro II/2TBView product	B QNAP TS-439 Pro II/4TBView product
Storage1 differ
Total installed storage capacityDiffers	2 TB	4 TB
Number of storage drives supported	4	4
Processoridentical
Processor manufacturer	Intel	Intel
Processor family	Intel Atom®	Intel Atom®
Processor model	D410	D410
Processor frequency	1.66 GHz	1.66 GHz
Processor cores	1	1
Processor threads	2	2
Processor cache	0.512 MB	0.512 MB
L2 cacheKnown for one	—Unknown — not stated by the source	0.512 MB
Bus type	DMI	DMI
ECC supported by processor	No	No
Physical Address Extension (PAE)	32 bit	32 bit
Processing Die size	66 mm²	66 mm²
Processor cache type	L2	L2
Processor code	SLBMH	SLBMH
Processor codename	Pineview	Pineview
Processor lithography	45 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor package size	22 x 22 mm	22 x 22 mm
Processor socket	BGA 559	BGA 559
Stepping	A0	A0
Thermal Design Power (TDP)	10 W	10 W
Tjunction	100 °C	100 °C
Maximum internal memory supported by processor	4 GB	4 GB
Memory bandwidth supported by processor (max)	6.4 GB/s	6.4 GB/s
Conflict-Free processor	No	No
Memoryidentical
Internal memory	1 GB	1 GB
Internal memory type	DDR2	DDR2
Flash memoryKnown for one	—Unknown — not stated by the source	512 MB
Ports & interfacesidentical
Ethernet LAN (RJ-45) ports	2	2
USB 2.0 ports quantity	5	5
eSATA	Yes	Yes
Designidentical
Chassis type	Tower	Tower
Number of fans	1 fan(s)	1 fan(s)
Poweridentical
Output power	250 W	250 W
Weight & dimensionsidentical
Weight	3.65 kg	3.65 kg
Processor special featuresidentical
Embedded options available	Yes	Yes
Enhanced Intel SpeedStep Technology	No	No
Execute Disable Bit	Yes	Yes
Idle States	No	No
Intel 64	Yes	Yes
Intel Demand Based Switching	No	No
Intel Enhanced Halt State	No	No
Intel Trusted Execution Technology	No	No
Intel Virtualization Technology (VT-x)	No	No
Intel Virtualization Technology for Directed I/O (VT-d)	No	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Turbo Boost Technology	No	No
Number of Processing Die Transistors	123 M	123 M
Thermal Monitoring Technologies	No	No
Memory channels supported by processor	Single	Single
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Operating relative humidity (H-H)	0 - 95%	0 - 95%
Other featuresidentical
Compatible operating systems	Windows 2000/XP/Vista/7/Server 2003/2008, Mac OS X, Linux, Unix	Windows 2000/XP/Vista/7/Server 2003/2008, Mac OS X, Linux, Unix
Dimensions (WxDxH)	180 x 235 x 177 mm	180 x 235 x 177 mm
Fan	90mm	90mm
Link/Act LED	Yes	Yes
Power requirements	100 - 240V	100 - 240V
Processor ARK ID	43517	43517
Connectivity LEDs	Yes	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.