Product comparison · 2 pcs/workstations

HP 620 + ZR2740w vs HP 820 + ZR2740w

131specifications compared
10differ
121identical
7known for one product only

Key differences

Memory slots
- 620 + ZR2740w:12x DIMM
- 820 + ZR2740w:16x DIMM
Memory clock speed
- 620 + ZR2740w:1600 MHz
- 820 + ZR2740w:1866 MHz
PS/2 ports quantity
- 620 + ZR2740w:0
- 820 + ZR2740w:2
Number of 3.5" bays
- 620 + ZR2740w:3
- 820 + ZR2740w:4
PCI Express x16 (Gen 3.x) slots
- 620 + ZR2740w:2
- 820 + ZR2740w:3
Power supply
- 620 + ZR2740w:800 W
- 820 + ZR2740w:1125 W
Width
- 620 + ZR2740w:171.5 mm
- 820 + ZR2740w:203 mm
Depth
- 620 + ZR2740w:464.8 mm
- 820 + ZR2740w:525 mm

Side by side

Differences highlightedShow differences only

Comparison of 620 + ZR2740w, 820 + ZR2740w
138 specifications	A HP 620 + ZR2740w View product	B HP 820 + ZR2740w View product
Processoridentical
Processor manufacturer	Intel	Intel
Processor family	Intel® Xeon® E5 V2 Family	Intel® Xeon® E5 V2 Family
Processor model	E5-2620V2	E5-2620V2
Processor cores	6	6
Processor threads	12	12
Processor boost frequency	2.6 GHz	2.6 GHz
Processor frequency	2.1 GHz	2.1 GHz
Processor cache	15 MB	15 MB
Processor cache type	Smart Cache	Smart Cache
Bus type	QPI	QPI
FSB Parity	No	No
System bus rate	7.2 GT/s	7.2 GT/s
Processor lithography	22 nm	22 nm
Processor operating modes	64-bit	64-bit
Processor series	Intel Xeon E5-2600 v2	Intel Xeon E5-2600 v2
Processor codename	Ivy Bridge EP	Ivy Bridge EP
Thermal Design Power (TDP)	80 W	80 W
Tcase	71 °C	71 °C
Maximum number of PCI Express lanes	40	40
PCI Express configurations	x4, x8, x16	x4, x8, x16
PCI Express slots version	3.0	3.0
Number of QPI links	2	2
Number of processors installed	1	1
Processor socket	LGA 2011 (Socket R)	LGA 2011 (Socket R)
Maximum internal memory supported by processor	768 GB	768 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processor	800,1066,1333,1600 MHz	800,1066,1333,1600 MHz
Memory bandwidth supported by processor (max)	51.2 GB/s	51.2 GB/s
ECC supported by processor	Yes	Yes
Memory2 differ
Internal memory	16 GB	16 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)	4 x 4 GB	4 x 4 GB
Memory slotsDiffers	12x DIMM	16x DIMM
Memory clock speedDiffers	1600 MHz	1866 MHz
ECC	Yes	Yes
Memory channels	Quad-channel	Quad-channel
Storageidentical
Total storage capacity	1 TB	1 TB
Optical drive type	DVD Super Multi	DVD Super Multi
Storage media	HDD	HDD
Number of HDDs installed	1	1
HDD capacity	1 TB	1 TB
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Card reader integratedKnown for one	Unknown — not stated by the source	Yes
Total HDDs capacityKnown for one	1 TB	Unknown — not stated by the source
Graphicsidentical
Discrete graphics card model	Not available	Not available
Performanceidentical
Product type	Workstation	Workstation
Motherboard chipset	Intel® C602	Intel® C602
Optical driveidentical
Optical drives quantity	1	1
BD interface type	SATA	SATA
Networkidentical
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
Cabling technology	10/100/1000Base-T(X)	10/100/1000Base-T(X)
Wi-Fi	No	No
Ports & interfaces1 differ
USB 2.0 ports quantity	5	5
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	4	4
HDMI ports quantity	0	0
Ethernet LAN (RJ-45) ports	2	2
Headphone outputs	1	1
Line-outKnown for one	Unknown — not stated by the source	Yes
Line-inKnown for one	Unknown — not stated by the source	Yes
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	0	0
DVI port	No	No
PS/2 ports quantityDiffers	0	2
Firewire (IEEE 1394) ports	2	2
Expansion slots2 differ
Number of 3.5" baysDiffers	3	4
PCI Express x4 (Gen 2.x) slots	1	1
PCI Express x4 (Gen 3.x) slotsKnown for one	Unknown — not stated by the source	1
PCI Express x8 (Gen 3.x) slots	1	1
PCI Express x16 (Gen 3.x) slotsDiffers	2	3
PCI slots	1	1
PCI Express x8 (Gen 2.x) slotsKnown for one	1	Unknown — not stated by the source
Power1 differ
Power supplyDiffers	800 W	1125 W
Designidentical
Chassis type	Mini Tower	Mini Tower
Number of 5.25" bays	3	3
Product colour	Black	Black
Country of origin	China	China
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architecture	64-bit	64-bit
Recovery operating system	Windows 8.1 Pro	Windows 8.1 Pro
Displayidentical
Display included	Yes	Yes
Display diagonal	68.6 cm (27")	68.6 cm (27")
Display resolution	2560 x 1440 pixels	2560 x 1440 pixels
Display brightness	380 cd/m²	380 cd/m²
Viewing angle, horizontal	178°	178°
Viewing angle, vertical	178°	178°
Processor special featuresidentical
CPU configuration (max)	2	2
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 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 Secure Key Technology version	1.00	1.00
Intel TSX-NI	No	No
Intel TSX-NI version	0.00	0.00
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® Clear Video HD Technology (Intel® CVT HD)	No	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® OS Guard	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® Wireless Display (Intel® WiDi)	No	No
Physical Address Extension (PAE)	46 bit	46 bit
Processor ARK ID	75789	75789
Processor package size	52.5 x 45 mm	52.5 x 45 mm
Scalability	2S	2S
Supported instruction sets	AVX	AVX
Thermal Monitoring Technologies	Yes	Yes
Intel® Turbo Boost Technology	2.0	2.0
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Quick Sync Video Technology	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Identity Protection Technology (Intel® IPT)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
Conflict-Free processor	No	No
Intel® Rapid Start TechnologyKnown for one	No	Unknown — not stated by the source
Audioidentical
Audio system	HD	HD
Weight & dimensions4 differ
WidthDiffers	171.5 mm	203 mm
DepthDiffers	464.8 mm	525 mm
HeightDiffers	444.5 mm	444 mm
WeightDiffers	15.5 kg	19.5 kg
Packaging contentidentical
Mouse included	No	No
Keyboard included	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.

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