Xeon E5-2643 vs E3-1270 v6

Primary details

Comparing Xeon E3-1270 v6 and Xeon E5-2643 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1136	1562
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.80	1.91
Market segment	Server	Server
Series	Intel Xeon E3	no data
Power efficiency	7.39	2.45
Architecture codename	Kaby Lake (2016−2019)	Sandy Bridge-EP (2012)
Release date	28 March 2017 (7 years ago)	6 March 2012 (12 years ago)
Launch price (MSRP)	$328	$218

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E3-1270 v6 has 204% better value for money than Xeon E5-2643.

Detailed specifications

Xeon E3-1270 v6 and Xeon E5-2643 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	4 (Quad-Core)	4 (Quad-Core)
Threads	8	8
Base clock speed	3.8 GHz	3.3 GHz
Boost clock speed	4.2 GHz	3.5 GHz
Bus type	DMI 3.0	no data
Bus rate	8 GT/s	8 GT/s
Multiplier	38	no data
L1 cache	256 KB	64 KB (per core)
L2 cache	1 MB	256 KB (per core)
L3 cache	8 MB	10240 KB (shared)
Chip lithography	14 nm	32 nm
Die size	no data	294 mm2
Maximum core temperature	no data	73 °C
Number of transistors	no data	1,270 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E3-1270 v6 and Xeon E5-2643 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)	2
Socket	FCLGA1151	FCLGA2011
Power consumption (TDP)	72 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1270 v6 and Xeon E5-2643. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® AVX
AES-NI	+	+
AVX	+	+
vPro	+	no data
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	+

Security technologies

Xeon E3-1270 v6 and Xeon E5-2643 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	no data
MPX	+	-
SGX	Yes with both Intel® SPS and Intel® ME	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1270 v6 and Xeon E5-2643 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1270 v6 and Xeon E5-2643. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400, DDR3L-1866	DDR3
Maximum memory size	64 GB	384 GB
Max memory channels	2	4
Maximum memory bandwidth	38.397 GB/s	51.2 GB/s
ECC memory support	+	+

Graphics image quality

Maximum display resolutions supported by Xeon E3-1270 v6 and Xeon E5-2643 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	N/A	no data
Max resolution over eDP	N/A	no data
Max resolution over DisplayPort	N/A	no data
Max resolution over VGA	N/A	no data

Graphics API support

APIs supported by Xeon E3-1270 v6 and Xeon E5-2643 integrated GPUs, sometimes API versions are included.

DirectX	N/A	no data
OpenGL	N/A	no data

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1270 v6 and Xeon E5-2643.

PCIe version	3.0	3.0
PCI Express lanes	16	40

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	5.62	3.36
Recency	28 March 2017	6 March 2012
Chip lithography	14 nm	32 nm
Power consumption (TDP)	72 Watt	130 Watt

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Should you still have questions on choice between Xeon E3-1270 v6 and Xeon E5-2643, ask them in Comments section, and we shall answer.

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