Xeon D-1557 vs Atom C3958

Primary details

Comparing Atom C3958 and Xeon D-1557 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1612	1038
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.59	0.67
Market segment	Server	Server
Series	Intel Atom	Intel Xeon D
Architecture codename	Goldmont (2016−2017)	Broadwell (2015−2019)
Release date	15 August 2017 (6 years ago)	24 February 2016 (8 years ago)
Launch price (MSRP)	$449	$694
Current price	$740 (1.6x MSRP)	$1395 (2x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon D-1557 has 14% better value for money than Atom C3958.

Detailed specifications

Atom C3958 and Xeon D-1557 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	16 (Hexadeca-Core)	12 (Dodeca-Core)
Threads	16	24
Base clock speed	2 GHz	1.5 GHz
Boost clock speed	2 GHz	2.1 GHz
L1 cache	896 KB	64K (per core)
L2 cache	16 MB	256K (per core)
L3 cache	16 MB	1.5 MB (per core)
Chip lithography	14 nm	14 nm
Die size	no data	306.18 mm2
Maximum core temperature	83 °C	no data
Maximum case temperature (TCase)	no data	80 °C
Number of transistors	no data	3,200 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Atom C3958 and Xeon D-1557 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	1
Socket	FCBGA1310	FCBGA1667
Power consumption (TDP)	31 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3958 and Xeon D-1557. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® AVX2
AES-NI	+	+
AVX	no data	+
Enhanced SpeedStep (EIST)	+	+
QuickAssist	+	no data
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	no data	+
Idle States	no data	+
Thermal Monitoring	no data	+
GPIO	no data	+
Status	Launched	Launched

Security technologies

Atom C3958 and Xeon D-1557 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Atom C3958 and Xeon D-1557 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom C3958 and Xeon D-1557. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4: 2400	DDR4, DDR3
Maximum memory size	256 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	38.397 GB/s	34.124 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Atom C3958 and Xeon D-1557.

PCIe version	3	2.0/3.0
PCI Express lanes	16	32
USB revision	3	2.0/3.0
Total number of SATA ports	16	6
Max number of SATA 6 Gb/s Ports	16	no data
Number of USB ports	8	8
Integrated LAN	4x10/2.5/1 GBE	+
UART	no data	+

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 D-1557 outperforms Atom C3958 by 117% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	2.77	6.00
Recency	15 August 2017	24 February 2016
Physical cores	16	12
Threads	16	24
Cost	$449	$694
Power consumption (TDP)	31 Watt	45 Watt

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Should you still have questions on choice between Atom C3958 and Xeon D-1557, ask them in Comments section, and we shall answer.

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