Product comparison · 2 servers

Dell PowerEdge R420 server vs Dell PowerEdge R520 server

94specifications compared
4differ
90identical
1known for one product only

Key differences

Memory slots
- PowerEdge R420 server:12
- PowerEdge R520 server:12x DIMM
Maximum storage capacity
- PowerEdge R420 server:12 TB
- PowerEdge R520 server:24 TB
Chassis type
- PowerEdge R420 server:Rack (1U)
- PowerEdge R520 server:Rack (2U)
Power supply
- PowerEdge R420 server:500 W
- PowerEdge R520 server:495 W

Side by side

Differences highlightedShow differences only

Comparison of R420, R520
95 specifications	A Dell PowerEdge R420 server Model R420 View product	B Dell PowerEdge R520 server Model R520 View product
Processoridentical
Processor manufacturer	Intel	Intel
Processor family	Intel® Xeon® E5 Family	Intel® Xeon® E5 Family
Processor model	E5-2403	E5-2403
Processor frequency	1.8 GHz	1.8 GHz
Processor cores	4	4
Processor cache	10 MB	10 MB
Motherboard chipset	Intel C600	Intel C600
Memory channels supported by processor	Triple	Triple
Number of processors installed	1	1
Thermal Design Power (TDP)	80 W	80 W
Processor cache type	Smart Cache	Smart Cache
System bus rate	6.4 GT/s	6.4 GT/s
Bus type	QPI	QPI
ECC supported by processor	Yes	Yes
Embedded options available	No	No
Execute Disable Bit	Yes	Yes
FSB Parity	No	No
Idle States	Yes	Yes
Maximum internal memory supported by processor	375 GB	375 GB
Maximum number of PCI Express lanes	24	24
Memory bandwidth supported by processor (max)	25 GB/s	25 GB/s
Memory clock speeds supported by processor	800,1066 MHz	800,1066 MHz
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Number of QPI links	1	1
Processor code	SR0LS	SR0LS
Processor codename	Sandy Bridge EN	Sandy Bridge EN
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor package size	45 x 42.5 mm	45 x 42.5 mm
Processor series	Intel Xeon E5-2400	Intel Xeon E5-2400
Processor socket	LGA 1356 (Socket B2)	LGA 1356 (Socket B2)
Processor threads	4	4
Scalability	2S	2S
Stepping	M1	M1
Supported instruction sets	AVX	AVX
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	No	No
Memory1 differ
Internal memory	2 GB	2 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory clock speed	1333 MHz	1333 MHz
Memory layout (slots x size)	1 x 2 GB	1 x 2 GB
Memory slotsDiffers	12	12x DIMM
Maximum internal memory	192 GB	192 GB
Storage1 differ
Maximum storage capacityDiffers	12 TB	24 TB
Total storage capacity	500 GB	500 GB
Number of HDDs installed	1	1
HDD capacity	500 GB	500 GB
HDD interface	Serial ATA	Serial ATA
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
RAID supportKnown for one	No	Unknown — not stated by the source
Optical drive type	No	No
Networkidentical
Cabling technology	10/100/1000Base-T(X)	10/100/1000Base-T(X)
Ethernet LAN	Yes	Yes
Ethernet interface type	Gigabit Ethernet	Gigabit Ethernet
Networking features	Gigabit Ethernet	Gigabit Ethernet
Ports & interfacesidentical
Ethernet LAN (RJ-45) ports	2	2
VGA (D-Sub) ports quantity	1	1
Expansion slotsidentical
PCI Express slots version	3.0	3.0
Design1 differ
Chassis typeDiffers	Rack (1U)	Rack (2U)
Rack mounting	Yes	Yes
Processor special featuresidentical
CPU configuration (max)	2	2
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	Yes	Yes
Intel Dual Display Capable Technology	No	No
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	No	No
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Identity Protection Technology version	0.00	0.00
Intel Rapid Storage Technology	No	No
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® Anti-Theft Technology (Intel® AT)	No	No
Intel® Clear Video HD Technology (Intel® CVT HD)	No	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	No	No
Intel® Identity Protection Technology (Intel® IPT)	No	No
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Quick Sync Video Technology	No	No
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost Technology	No	No
Intel® Wireless Display (Intel® WiDi)	No	No
Processor ARK ID	64615	64615
Power1 differ
Redundant power supply (RPS) support	No	No
Number of power supply units	1	1
Power supplyDiffers	500 W	495 W
Sustainabilityidentical
Sustainability certificates	ENERGY STAR	ENERGY STAR

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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