Atom C3950 vs Celeron B820

Primary details

Comparing Celeron B820 and Atom C3950 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2750	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Server
Series	Intel Celeron	Intel Atom
Architecture codename	Sandy Bridge (2011−2013)	Goldmont (2016−2017)
Release date	1 July 2012 (12 years ago)	15 August 2017 (6 years ago)
Launch price (MSRP)	$86	$389
Current price	$34 (0.4x MSRP)	no data

Detailed specifications

Celeron B820 and Atom C3950 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	2 (Dual-core)	16 (Hexadeca-Core)
Threads	2	16
Base clock speed	1.7 GHz	1.7 GHz
Boost clock speed	1.7 GHz	2.2 GHz
Bus support	4 × 5 GT/s	no data
L1 cache	128 KB	896 KB
L2 cache	512 KB	16 MB
L3 cache	2 MB (shared)	16 MB
Chip lithography	32 nm	14 nm
Die size	131 mm2	no data
Maximum core temperature	100 °C	78 °C
Number of transistors	504 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Celeron B820 and Atom C3950 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	FCPGA988,PGA988	FCBGA1310
Power consumption (TDP)	35 Watt	24 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron B820 and Atom C3950. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	-	+
FMA	+	no data
Enhanced SpeedStep (EIST)	+	+
QuickAssist	no data	-
My WiFi	-	no data
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	-
Idle States	+	no data
Thermal Monitoring	+	no data
Flex Memory Access	+	no data
Demand Based Switching	-	no data
FDI	+	no data
Fast Memory Access	+	no data
Status	Discontinued	Launched

Security technologies

Celeron B820 and Atom C3950 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron B820 and Atom C3950 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron B820 and Atom C3950. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4: 2400
Maximum memory size	16 GB	256 GB
Max memory channels	2	2
Maximum memory bandwidth	21.3 GB/s	38.397 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	no data
Graphics max frequency	1.05 GHz	no data

Graphics interfaces

Available interfaces and connections of Celeron B820 and Atom C3950 integrated GPUs.

Number of displays supported	2	no data
eDP	+	no data
DisplayPort	+	no data
HDMI	+	no data
SDVO	+	no data
CRT	+	no data

Peripherals

Specifications and connection of peripherals supported by Celeron B820 and Atom C3950.

PCIe version	2.0	3
PCI Express lanes	16	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	2x10/2.5/1 GBE + 2x1 GBE

Pros & cons summary

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Recency	1 July 2012	15 August 2017
Physical cores	2	16
Threads	2	16
Cost	$86	$389
Chip lithography	32 nm	14 nm
Power consumption (TDP)	35 Watt	24 Watt

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