Atom C3955 vs Xeon E5-2699 v4

Primary details

Comparing Xeon E5-2699 v4 and Atom C3955 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	371	1400
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	17.46	0.76
Market segment	Server	Server
Series	Intel Xeon E5	Intel Atom
Architecture codename	Broadwell (2015−2019)	Goldmont (2016−2017)
Release date	20 June 2016 (8 years ago)	15 August 2017 (6 years ago)
Launch price (MSRP)	$4,115	$434
Current price	$429 (0.1x MSRP)	$850 (2x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E5-2699 v4 has 2197% better value for money than Atom C3955.

Detailed specifications

Xeon E5-2699 v4 and Atom C3955 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	22 (Docosa-Core)	16 (Hexadeca-Core)
Threads	44	16
Base clock speed	2.2 GHz	2.1 GHz
Boost clock speed	3.6 GHz	2.4 GHz
Bus support	2 × 9.6 GT/s	no data
L1 cache	no data	896 KB
L2 cache	5.5 MB	16 MB
L3 cache	55 MB	16 MB
Chip lithography	14 nm	14 nm
Die size	456.12 mm2	no data
Maximum core temperature	79 °C	78 °C
Number of transistors	7200 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Xeon E5-2699 v4 and Atom C3955 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	FCBGA1310
Power consumption (TDP)	145 Watt	32 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2699 v4 and Atom C3955. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon E5-2699 v4 and Atom C3955 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2699 v4 and Atom C3955 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2699 v4 and Atom C3955. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400	DDR4: 2400
Maximum memory size	1.5 TB	256 GB
Max memory channels	4	2
Maximum memory bandwidth	76.8 GB/s	38.397 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2699 v4 and Atom C3955.

PCIe version	3.0	3
PCI Express lanes	40	16
USB revision	no data	3
Total number of SATA ports	no data	16
Max number of SATA 6 Gb/s Ports	no data	16
Number of USB ports	no data	8
Integrated LAN	no data	4x10/2.5/1 GBE

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.

Xeon E5-2699 v4 outperforms Atom C3955 by 339% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	16.45	3.75
Recency	20 June 2016	15 August 2017
Physical cores	22	16
Threads	44	16
Cost	$4115	$434
Power consumption (TDP)	145 Watt	32 Watt

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Should you still have questions on choice between Xeon E5-2699 v4 and Atom C3955, ask them in Comments section, and we shall answer.

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