i7-3940XM vs Xeon E3-1545M v5

Primary details

Comparing Xeon E3-1545M v5 and Core i7-3940XM processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1230	1484
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.39	no data
Market segment	Server	Laptop
Series	Intel Xeon E3	Intel Core i7
Power efficiency	10.35	6.33
Architecture codename	Skylake-H (2015−2016)	Ivy Bridge (2012−2013)
Release date	24 January 2016 (8 years ago)	3 September 2012 (12 years ago)
Launch price (MSRP)	$679	$1,096

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E3-1545M v5 and Core i7-3940XM 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	2.9 GHz	3 GHz
Boost clock speed	3.8 GHz	3.9 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	5 GT/s
Multiplier	29	no data
L1 cache	64 KB (per core)	64K (per core)
L2 cache	256 KB (per core)	256K (per core)
L3 cache	8 MB (shared)	8 MB (shared)
Chip lithography	14 nm	22 nm
Die size	171 mm2	160 mm2
Maximum core temperature	100 °C	105 °C
Number of transistors	2,300 million	1,400 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+

Compatibility

Information on Xeon E3-1545M v5 and Core i7-3940XM 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	FCBGA1440	FCPGA988
Power consumption (TDP)	45 Watt	55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1545M v5 and Core i7-3940XM. 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)	+	+
eDRAM	128 MB	no data
My WiFi	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	+	-
Smart Response	+	no data
Demand Based Switching	no data	-
FDI	no data	+
Fast Memory Access	no data	+

Security technologies

Xeon E3-1545M v5 and Core i7-3940XM technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1545M v5 and Core i7-3940XM are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1545M v5 and Core i7-3940XM. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	DDR3
Maximum memory size	64 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	25.6 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel Iris Pro Graphics P580	Intel HD Graphics 4000
Max video memory	64 GB	no data
Quick Sync Video	+	+
Clear Video HD	+	+
Graphics max frequency	1.05 GHz	1.35 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Xeon E3-1545M v5 and Core i7-3940XM integrated GPUs.

Number of displays supported	3	3
eDP	+	+
DisplayPort	+	+
HDMI	+	+
DVI	+	no data
SDVO	no data	+
CRT	no data	+

Graphics image quality

Maximum display resolutions supported by Xeon E3-1545M v5 and Core i7-3940XM integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data

Graphics API support

APIs supported by Xeon E3-1545M v5 and Core i7-3940XM integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.4	no data

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1545M v5 and Core i7-3940XM.

PCIe version	3.0	3.0
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	4.92	3.68
Integrated graphics card	5.24	1.18
Recency	24 January 2016	3 September 2012
Chip lithography	14 nm	22 nm
Power consumption (TDP)	45 Watt	55 Watt

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Should you still have questions on choice between Xeon E3-1545M v5 and Core i7-3940XM, ask them in Comments section, and we shall answer.

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