Atom x5-E3940 vs Xeon E5-2680 v4

Primary details

Comparing Xeon E5-2680 v4 and Atom x5-E3940 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	695	2309
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.94	no data
Market segment	Server	Laptop
Series	Intel Xeon (Desktop)	5x Intel Atom
Power efficiency	8.79	11.64
Architecture codename	Broadwell-EP (2016)	Apollo Lake (2014−2016)
Release date	20 June 2016 (8 years ago)	30 August 2014 (10 years ago)
Launch price (MSRP)	$1,745	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-2680 v4 and Atom x5-E3940 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	14 (Tetradeca-Core)	4 (Quad-Core)
Threads	28	4
Base clock speed	2.4 GHz	1.6 GHz
Boost clock speed	3.3 GHz	1.8 GHz
Bus type	QPI	no data
Bus rate	2 × 9.6 GT/s	no data
Multiplier	24	no data
L1 cache	448 KB	56K (per core)
L2 cache	3.5 MB	2 MB (shared)
L3 cache	35 MB	0 KB
Chip lithography	14 nm	14 nm
Die size	306.18 mm2	no data
Maximum core temperature	86 °C	no data
Maximum case temperature (TCase)	no data	103 °C
Number of transistors	4700 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2680 v4 and Atom x5-E3940 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 (Multiprocessor)	1 (Uniprocessor)
Socket	FCLGA2011	Intel BGA 1296
Power consumption (TDP)	120 Watt	10 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2680 v4 and Atom x5-E3940. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon E5-2680 v4 and Atom x5-E3940 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data
Secure Key	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2680 v4 and Atom x5-E3940 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2680 v4 and Atom x5-E3940. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400	DDR3-1866
Maximum memory size	1.5 TB	8 GB
Max memory channels	4	no data
Maximum memory bandwidth	76.8 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Intel HD Graphics 500

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2680 v4 and Atom x5-E3940.

PCIe version	3.0	2.0
PCI Express lanes	40	4

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

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.

---

Pros & cons summary

---

Performance score	11.15	1.23
Recency	20 June 2016	30 August 2014
Physical cores	14	4
Threads	28	4
Power consumption (TDP)	120 Watt	10 Watt

---

Should you still have questions on choice between Xeon E5-2680 v4 and Atom x5-E3940, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---