Xeon E7-8850 vs E5-2643 v3

Primary details

Comparing Xeon E5-2643 v3 and Xeon E7-8850 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	962	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	9.82	no data
Market segment	Server	Server
Series	no data	Intel Xeon E7
Architecture codename	Haswell-EP (2014)	Westmere-EX (2011)
Release date	8 September 2014 (9 years ago)	3 April 2011 (13 years ago)
Launch price (MSRP)	no data	$3,059
Current price	$96	$2599 (0.8x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-2643 v3 and Xeon E7-8850 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	6 (Hexa-Core)	10 (Deca-Core)
Threads	12	20
Base clock speed	3.4 GHz	2 GHz
Boost clock speed	3.7 GHz	2.4 GHz
Bus support	no data	6.4 GT/s
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	20 MB (shared)	30 MB (shared)
Chip lithography	22 nm	32 nm
Die size	356 mm2	513 mm2
Maximum core temperature	77 °C	69 °C
Number of transistors	2,600 million	2,600 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Xeon E5-2643 v3 and Xeon E7-8850 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	2	8
Socket	FCLGA2011	LGA1567
Power consumption (TDP)	135 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2643 v3 and Xeon E7-8850. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	+
AVX	+	no data
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	1.0
Hyper-Threading Technology	+	+
TSX	-	no data
Idle States	+	no data
Thermal Monitoring	+	+
Flex Memory Access	-	no data
Demand Based Switching	+	no data
PAE	46 Bit	no data
Status	Discontinued	Discontinued

Security technologies

Xeon E5-2643 v3 and Xeon E7-8850 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	no data
Identity Protection	-	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2643 v3 and Xeon E7-8850 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2643 v3 and Xeon E7-8850. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133	DDR3
Maximum memory size	768 GB	4 TB
Max memory channels	4	4
Maximum memory bandwidth	68 GB/s	34.113 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2643 v3 and Xeon E7-8850.

PCIe version	3.0	no data
PCI Express lanes	40	no data

Pros & cons summary

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Recency	8 September 2014	3 April 2011
Physical cores	6	10
Threads	12	20
Chip lithography	22 nm	32 nm
Power consumption (TDP)	135 Watt	130 Watt

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