Product comparison · 2 servers

Lenovo ThinkServer RD540 server vs Lenovo ThinkServer RD640 server

99specifications compared
17differ
82identical
12known for one product only

Key differences

Processor model
- ThinkServer RD540 server:E5-2620
- ThinkServer RD640 server:E5-2640
Processor frequency
- ThinkServer RD540 server:2 GHz
- ThinkServer RD640 server:2.5 GHz
Processor boost frequency
- ThinkServer RD540 server:2.5 GHz
- ThinkServer RD640 server:3 GHz
CPU multiplier (bus/core ratio)
- ThinkServer RD540 server:25
- ThinkServer RD640 server:30
Embedded options available
- ThinkServer RD540 server:Yes
- ThinkServer RD640 server:No
Memory clock speeds supported by processor
- ThinkServer RD540 server:800,1066,1333 MHz
- ThinkServer RD640 server:800,1066,1333,1600 MHz
Tcase
- ThinkServer RD540 server:77.4 °C
- ThinkServer RD640 server:73 °C
Number of HDDs supported
- ThinkServer RD540 server:4
- ThinkServer RD640 server:16

Side by side

Differences highlightedShow differences only

Comparison of RD540, RD640
111 specifications	A Lenovo ThinkServer RD540 server Model RD540 View product	B Lenovo ThinkServer RD640 server Model RD640 View product
Processor7 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Xeon® E5 Family	Intel® Xeon® E5 Family
Processor modelDiffers	E5-2620	E5-2640
Processor frequencyDiffers	2 GHz	2.5 GHz
Processor boost frequencyDiffers	2.5 GHz	3 GHz
Processor cores	6	6
Processor cache	15 MB	15 MB
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® C602J
Memory channels supported by processor	Quad	Quad
Number of processors installed	1	1
Thermal Design Power (TDP)	95 W	95 W
Processor cache type	Smart Cache	Smart Cache
System bus rate	7.2 GT/s	7.2 GT/s
Bus type	QPI	QPI
CPU multiplier (bus/core ratio)Differs	25	30
ECC supported by processor	Yes	Yes
Embedded options availableDiffers	Yes	No
Execute Disable Bit	Yes	Yes
FSB Parity	No	No
Graphics & IMC lithography	32 nm	32 nm
Idle States	Yes	Yes
Maximum internal memory supported by processor	750 GB	750 GB
Maximum number of PCI Express lanes	40	40
Memory bandwidth supported by processor (max)	42.6 GB/s	42.6 GB/s
Memory clock speeds supported by processorDiffers	800,1066,1333 MHz	800,1066,1333,1600 MHz
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Number of QPI links	2	2
PCI Express configurations	x4, x8, x16	x4, x8, x16
Physical Address Extension (PAE)	46 bit	46 bit
Processor codename	Sandy Bridge EP	Sandy Bridge EP
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor package size	52.5 x 45.0 mm	52.5 x 45.0 mm
Processor series	Intel Xeon E5-2600	Intel Xeon E5-2600
Processor socket	LGA 2011 (Socket R)	LGA 2011 (Socket R)
Processor threads	12	12
Scalability	2S	2S
Stepping	C2	C2
Supported instruction sets	AVX	AVX
TcaseDiffers	77.4 °C	73 °C
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	No	No
Memoryidentical
Internal memory	16 GB	16 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory slots	20	20
Maximum internal memory	320 GB	320 GB
Storage3 differ
Maximum storage capacity	16 TB	16 TB
Total storage capacity	0 GB	0 GB
Number of HDDs installed	0	0
HDD interfaceDiffers	Serial ATA	Serial ATA, Serial Attached SCSI (SAS)
HDD sizeKnown for one	Unknown — not stated by the source	2.5"
Number of HDDs supportedDiffers	4	16
RAID support	Yes	Yes
RAID levelsDiffers	0, 1, 5, 10	1, 5, 6, 10, 50, 60
Hot-swapKnown for one	Yes	Unknown — not stated by the source
Networkidentical
Cabling technology	10/100/1000Base-T(X)	10/100/1000Base-T(X)
Ethernet LAN	Yes	Yes
Ports & interfaces2 differ
Ethernet LAN (RJ-45) ports	2	2
USB 2.0 ports quantityDiffers	2	6
VGA (D-Sub) ports quantityDiffers	1	2
Expansion slotsidentical
PCI Express x8 (Gen 3.x) slotsKnown for one	Unknown — not stated by the source	2
PCI Express x16 (Gen 3.x) slotsKnown for one	Unknown — not stated by the source	1
PCI Express slots version	3.0	3.0
Design1 differ
Chassis typeDiffers	Rack (1U)	Rack (2U)
Performanceidentical
BIOS typeKnown for one	Unknown — not stated by the source	UEFI
Trusted Platform Module (TPM)	Yes	Yes
Softwareidentical
Operating system installed	No	No
Compatible operating systems	Microsoft Windows Server 2012 Microsoft Windows Server 2008 Microsoft Windows Server 2008 R2 Microsoft Windows Small Business Server 2011 Novel SUSE Linux Enterprise Server Red Hat Enterprise Linux Server VMware ESXi	Microsoft Windows Server 2012 Microsoft Windows Server 2008 Microsoft Windows Server 2008 R2 Microsoft Windows Small Business Server 2011 Novel SUSE Linux Enterprise Server Red Hat Enterprise Linux Server VMware ESXi
Processor special features1 differ
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 Secure Key Technology version	1.00	1.00
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® 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)	Yes	Yes
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® Secure Key	Yes	Yes
Intel® Turbo Boost Technology	1.0	1.0
Intel® Wireless Display (Intel® WiDi)	No	No
Processor ARK IDDiffers	64594	64591
Poweridentical
Redundant power supply (RPS) support	Yes	Yes
Power supply	800 W	800 W
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	10 - 35 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	8 - 80%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	8 - 90%
Operating altitudeKnown for one	Unknown — not stated by the source	0 - 3048 m
Sustainabilityidentical
Sustainability certificatesKnown for one	Unknown — not stated by the source	ENERGY STAR
Weight & dimensions3 differ
WidthDiffers	435.8 mm	441.9 mm
DepthDiffers	718.8 mm	87.3 mm
HeightDiffers	43.4 mm	720.5 mm

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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