Xeon E5-4640 vs D-1540

Primary details

Comparing Xeon D-1540 and Xeon E5-4640 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1054	1323
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.80	0.28
Market segment	Server	Server
Series	Intel Xeon D	no data
Power efficiency	13.27	4.40
Architecture codename	Broadwell (2015−2019)	Sandy Bridge-EP (2012)
Release date	9 March 2015 (9 years ago)	14 May 2012 (12 years ago)
Launch price (MSRP)	$581	$2,730

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon D-1540 has 900% better value for money than Xeon E5-4640.

Detailed specifications

Xeon D-1540 and Xeon E5-4640 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	8 (Octa-Core)	8 (Octa-Core)
Threads	16	16
Base clock speed	2 GHz	2.4 GHz
Boost clock speed	2.6 GHz	2.8 GHz
Bus type	DMI 2.0	no data
Bus rate	no data	8 GT/s
Multiplier	20	no data
L1 cache	512 KB	64 KB (per core)
L2 cache	2 MB	256 KB (per core)
L3 cache	12 MB	20480 KB (shared)
Chip lithography	14 nm	32 nm
Die size	246.24 mm2	435 mm2
Maximum case temperature (TCase)	80 °C	no data
Number of transistors	3200 Million	2,270 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon D-1540 and Xeon E5-4640 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1 (Uniprocessor)	4
Socket	FCBGA1667	FCLGA2011
Power consumption (TDP)	45 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-1540 and Xeon E5-4640. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	Intel® AVX
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	no data	+
Demand Based Switching	no data	+
GPIO	+	no data

Security technologies

Xeon D-1540 and Xeon E5-4640 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon D-1540 and Xeon E5-4640 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon D-1540 and Xeon E5-4640. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR3
Maximum memory size	128 GB	384 GB
Max memory channels	2	4
Maximum memory bandwidth	34.124 GB/s	51.2 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon D-1540 and Xeon E5-4640.

PCIe version	2.0/3.0	3.0
PCI Express lanes	24	40
USB revision	2.0/3.0	no data
Total number of SATA ports	6	no data
Number of USB ports	8	no data
Integrated LAN	+	no data
UART	+	no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	6.55	4.58
Recency	9 March 2015	14 May 2012
Chip lithography	14 nm	32 nm
Power consumption (TDP)	45 Watt	95 Watt

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Should you still have questions on choice between Xeon D-1540 and Xeon E5-4640, ask them in Comments section, and we shall answer.

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