Atom C3958 vs C3858

Place in the ranking	1650	1762
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.93	0.54
Market segment	Server	Server
Series	Intel Atom	Intel Atom
Power efficiency	11.21	7.54
Architecture codename	Goldmont (2016−2017)	Goldmont (2016−2017)
Release date	15 August 2017 (7 years ago)	15 August 2017 (7 years ago)
Launch price (MSRP)	$332	$449

Cost-effectiveness evaluation

Performance per price, higher is better.

Atom C3858 has 72% better value for money than Atom C3958.

Detailed specifications

Atom C3858 and Atom C3958 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	12 (Dodeca-Core)	16 (Hexadeca-Core)
Threads	12	16
Base clock speed	2 GHz	2 GHz
Boost clock speed	2 GHz	2 GHz
Multiplier	20	20
L1 cache	672 KB	896 KB
L2 cache	12 MB	16 MB
L3 cache	12 MB	16 MB
Chip lithography	14 nm	14 nm
Maximum core temperature	83 °C	83 °C
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Atom C3858 and Atom C3958 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 (Uniprocessor)
Socket	FCBGA1310	FCBGA1310
Power consumption (TDP)	25 Watt	31 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3858 and Atom C3958. You'll probably need this information if you require some particular technology.

AES-NI	+	+
Enhanced SpeedStep (EIST)	+	+
QuickAssist	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-

Security technologies

Atom C3858 and Atom C3958 technologies aimed at improving security, for example, by protecting against hacks.

EDB	+	+
Secure Boot	+	+
Secure Key	+	+
SGX	-	-
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Atom C3858 and Atom C3958 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom C3858 and Atom C3958. Depending on the motherboard, higher memory frequencies may be supported.

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

Peripherals

Specifications and connection of peripherals supported by Atom C3858 and Atom C3958.

PCIe version	3	3
PCI Express lanes	16	16
USB revision	3	3
Total number of SATA ports	16	16
Max number of SATA 6 Gb/s Ports	16	16
Number of USB ports	8	8
Integrated LAN	4x10/2.5/1 GBE	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.

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.

Atom C3858 2.96
+19.8%

Atom C3958 2.47

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Atom C3858 4707
+19.8%

Atom C3958 3929