Xeon E7-4820 vs E5-4657L v2

Primary details

Comparing Xeon E5-4657L v2 and Xeon E7-4820 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	957	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Series	no data	Intel Xeon E7
Architecture codename	no data	Westmere (2010−2011)
Release date	1 January 2014 (10 years ago)	5 April 2011 (13 years ago)
Launch price (MSRP)	no data	$1,446

Detailed specifications

Xeon E5-4657L v2 and Xeon E7-4820 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	12 (Dodeca-Core)	8 (Octa-Core)
Threads	24	16
Base clock speed	2.4 GHz	2 GHz
Boost clock speed	2.9 GHz	2.27 GHz
Bus type	no data	QPI
Bus rate	8 GT/s	5.86 GT/s
Multiplier	no data	15
L1 cache	no data	512 KB
L2 cache	no data	2 MB
L3 cache	30 MB Intel® Smart Cache	18 MB
Chip lithography	22 nm	32 nm
Die size	no data	513 mm2
Maximum core temperature	81 °C	64 °C
Number of transistors	no data	2600 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-4657L v2 and Xeon E7-4820 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	4	4 (Multiprocessor)
Socket	FCLGA2011	LGA1567
Power consumption (TDP)	115 Watt	105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-4657L v2 and Xeon E7-4820. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	1.0
Hyper-Threading Technology	+	+
Idle States	+	no data
Thermal Monitoring	+	+
Demand Based Switching	+	no data
PAE	46 Bit	no data
Status	Discontinued	Discontinued

Security technologies

Xeon E5-4657L v2 and Xeon E7-4820 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 E5-4657L v2 and Xeon E7-4820 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-4657L v2 and Xeon E7-4820. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-800, DDR3-1066, DDR3-1333, DDR3-1600, DDR3-1866	DDR3-800, DDR3-978, DDR3-1066, DDR3-1333, Speed-1066
Maximum memory size	768 GB	2 TB
Max memory channels	4	4
Maximum memory bandwidth	59.7 GB/s	34.113 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5-4657L v2 and Xeon E7-4820.

PCIe version	3.0	no data
PCI Express lanes	40	no data

Pros & cons summary

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Recency	1 January 2014	5 April 2011
Physical cores	12	8
Threads	24	16
Chip lithography	22 nm	32 nm
Power consumption (TDP)	115 Watt	105 Watt

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