i7-4940MX vs Xeon E3-1280 v6

Primary details

Comparing Xeon E3-1280 v6 and Core i7-4940MX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1133	1357
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.24	no data
Market segment	Server	Laptop
Series	Intel Xeon E3	Intel Core i7
Power efficiency	7.48	7.14
Architecture codename	Kaby Lake (2016−2019)	Haswell (2013−2015)
Release date	28 March 2017 (7 years ago)	20 January 2014 (10 years ago)
Launch price (MSRP)	$612	$1,096

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E3-1280 v6 and Core i7-4940MX 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	3.9 GHz	3.1 GHz
Boost clock speed	4.2 GHz	4 GHz
Bus type	DMI 3.0	no data
Bus rate	8 GT/s	5 GT/s
Multiplier	39	no data
L1 cache	256 KB	64K (per core)
L2 cache	1 MB	256K (per core)
L3 cache	8 MB	8 MB (shared)
Chip lithography	14 nm	22 nm
Die size	no data	177 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	no data	100 °C
Number of transistors	no data	1,400 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+

Compatibility

Information on Xeon E3-1280 v6 and Core i7-4940MX 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)	1
Socket	FCLGA1151	FCPGA946
Power consumption (TDP)	72 Watt	57 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1280 v6 and Core i7-4940MX. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	+
FDI	no data	+

Security technologies

Xeon E3-1280 v6 and Core i7-4940MX technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1280 v6 and Core i7-4940MX are enumerated here.

AMD-V	-	+
VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1280 v6 and Core i7-4940MX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400, DDR3L-1866	DDR3
Maximum memory size	64 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	38.397 GB/s	25.6 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel HD Graphics 4600
Max video memory	no data	1.7 GB
Quick Sync Video	-	+
Clear Video HD	-	+
Graphics max frequency	no data	1.35 GHz
InTru 3D	-	+

Graphics interfaces

Available interfaces and connections of Xeon E3-1280 v6 and Core i7-4940MX integrated GPUs.

Number of displays supported	no data	3
eDP	no data	+
DisplayPort	-	+
HDMI	-	+
VGA	no data	+

Graphics image quality

Maximum display resolutions supported by Xeon E3-1280 v6 and Core i7-4940MX 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 E3-1280 v6 and Core i7-4940MX 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 E3-1280 v6 and Core i7-4940MX.

PCIe version	3.0	3
PCI Express lanes	16	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.

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Pros & cons summary

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Performance score	5.69	4.30
Recency	28 March 2017	20 January 2014
Chip lithography	14 nm	22 nm
Power consumption (TDP)	72 Watt	57 Watt

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Should you still have questions on choice between Xeon E3-1280 v6 and Core i7-4940MX, ask them in Comments section, and we shall answer.

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