Celeron M 390 vs B820

Primary details

Comparing Celeron B820 and Celeron M 390 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2875	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Celeron M
Power efficiency	1.35	no data
Architecture codename	Sandy Bridge (2011−2013)	Dothan (2004−2005)
Release date	1 July 2012 (12 years ago)	no data (2024 years ago)
Launch price (MSRP)	$86	no data

Detailed specifications

Celeron B820 and Celeron M 390 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)	1 (Single-Core)
Threads	2	1
Base clock speed	1.7 GHz	1.7 GHz
Boost clock speed	1.7 GHz	1.7 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	400 MHz
Multiplier	17	no data
L1 cache	64K (per core)	no data
L2 cache	256K (per core)	no data
L3 cache	2 MB (shared)	1 MB L2 KB
Chip lithography	32 nm	90 nm
Die size	131 mm2	no data
Maximum core temperature	100 °C	100 °C
Number of transistors	504 million	no data
64 bit support	+	-
Windows 11 compatibility	-	-
VID voltage range	no data	1.004V-1.292V

Compatibility

Information on Celeron B820 and Celeron M 390 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	FCPGA988,PGA988	PPGA478, H-PBGA479
Power consumption (TDP)	35 Watt	21 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron B820 and Celeron M 390. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
FMA	+	-
Enhanced SpeedStep (EIST)	+	-
My WiFi	-	no data
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	-
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Demand Based Switching	-	-
PAE	no data	32 Bit
FDI	+	no data
Fast Memory Access	+	no data
FSB parity	no data	-

Security technologies

Celeron B820 and Celeron M 390 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Anti-Theft	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron B820 and Celeron M 390 are enumerated here.

VT-d	-	no data
VT-x	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron B820 and Celeron M 390. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.335 GB/s	no data

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 Celeron M 390 integrated GPUs.

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

Peripherals

Specifications and connection of peripherals supported by Celeron B820 and Celeron M 390.

PCIe version	2.0	no data
PCI Express lanes	16	no data

Pros & cons summary

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Physical cores	2	1
Threads	2	1
Chip lithography	32 nm	90 nm
Power consumption (TDP)	35 Watt	21 Watt

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