Xeon 6776P-B vs Atom C3958

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1991	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.17	no data
Market segment	Server	Server
Series	Intel Atom	no data
Power efficiency	3.05	no data
Designer	Intel	Intel
Architecture codename	Goldmont (2016−2017)	no data
Release date	15 August 2017 (8 years ago)	1 October 2025 (recently)
Launch price (MSRP)	$449	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Performance to price scatter graph

Detailed specifications

Atom C3958 and Xeon 6776P-B 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)	72 (Doheptaconta-Core)
Performance-cores	no data	72
Threads	16	144
Base clock speed	2 GHz	2.3 GHz
Boost clock speed	2 GHz	3.5 GHz
Bus rate	no data	0 GT/s
Multiplier	20	no data
L1 cache	896 KB	no data
L2 cache	16 MB	no data
L3 cache	16 MB	288 MB
Chip lithography	14 nm	Intel 3 nm
Maximum core temperature	83 °C	85 °C
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Atom C3958 and Xeon 6776P-B 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)	no data
Socket	FCBGA1310	no data
Power consumption (TDP)	31 Watt	325 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3958 and Xeon 6776P-B. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX
AES-NI	+	+
Enhanced SpeedStep (EIST)	+	-
QuickAssist	+	+
Speed Shift	no data	-
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
Deep Learning Boost	-	+

Security technologies

Atom C3958 and Xeon 6776P-B technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	+	+
Secure Boot	+	no data
SGX	-	Yes with Intel® SPS
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Atom C3958 and Xeon 6776P-B are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom C3958 and Xeon 6776P-B. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4: 2400	DDR5
Maximum memory size	256 GB	2.25 TB
Max memory channels	2	8
Maximum memory bandwidth	38.397 GB/s	no data
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Atom C3958 and Xeon 6776P-B.

PCIe version	3	Gen4, Gen5
PCI Express lanes	16	48
USB revision	3	no data
Total number of SATA ports	16	no data
Number of USB ports	8	no data
Integrated LAN	4x10/2.5/1 GBE	+

Pros & cons summary

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Recency	15 August 2017	1 October 2025
Physical cores	16	72
Threads	16	144
Power consumption (TDP)	31 Watt	325 Watt

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