Xeon E3-1585 v5 vs E5-2643 v2

Primary details

Comparing Xeon E5-2643 v2 and Xeon E3-1585 v5 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1047	1097
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.22	0.78
Market segment	Server	Server
Series	no data	Intel Xeon E3
Architecture codename	Ivy Bridge-EP (2013)	Skylake (2015−2016)
Release date	1 September 2013 (10 years ago)	31 May 2016 (8 years ago)
Launch price (MSRP)	$2,200	$556
Current price	$29 (0x MSRP)	$979 (1.8x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E5-2643 v2 has 185% better value for money than Xeon E3-1585 v5.

Detailed specifications

Xeon E5-2643 v2 and Xeon E3-1585 v5 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)	4 (Quad-Core)
Threads	12	8
Base clock speed	3.5 GHz	3.5 GHz
Boost clock speed	3.8 GHz	3.9 GHz
Bus support	no data	4 × 8 GT/s
L1 cache	64 KB (per core)	256 KB
L2 cache	256 KB (per core)	1 MB
L3 cache	15 MB (shared)	8 MB
Chip lithography	22 nm	14 nm
Die size	160 mm2	no data
Maximum core temperature	74 °C	100 °C
Number of transistors	1,400 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Xeon E5-2643 v2 and Xeon E3-1585 v5 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	1
Socket	FCLGA2011	FCBGA1440
Power consumption (TDP)	130 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2643 v2 and Xeon E3-1585 v5. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
eDRAM	no data	128 MB
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	+	no data
Flex Memory Access	-	no data
Demand Based Switching	+	no data
PAE	46 Bit	no data
FDI	no data	+
Status	Discontinued	Discontinued

Security technologies

Xeon E5-2643 v2 and Xeon E3-1585 v5 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2643 v2 and Xeon E3-1585 v5 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2643 v2 and Xeon E3-1585 v5. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	LPDDR3-1600, DDR4-2133
Maximum memory size	768 GB	64 GB
Max memory channels	4	2
Maximum memory bandwidth	59.7 GB/s	34.134 GB/s
ECC memory support	+	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel Iris Pro Graphics P580
Max video memory	no data	64 GB
Quick Sync Video	no data	+
Clear Video	no data	+
Graphics max frequency	no data	1.15 GHz
Execution Units	no data	72

Graphics interfaces

Available interfaces and connections of Xeon E5-2643 v2 and Xeon E3-1585 v5 integrated GPUs.

Number of displays supported

no data

3

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2643 v2 and Xeon E3-1585 v5.

PCIe version	3.0	3.0
PCI Express lanes	40	16

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.

E5-2643 v2 outperforms E3-1585 v5 by 9% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	5.91	5.44
Recency	1 September 2013	31 May 2016
Physical cores	6	4
Threads	12	8
Cost	$2200	$556
Chip lithography	22 nm	14 nm
Power consumption (TDP)	130 Watt	65 Watt

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Should you still have questions on choice between Xeon E5-2643 v2 and Xeon E3-1585 v5, ask them in Comments section, and we shall answer.

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