Celeron 797 vs B820

Primary details

Comparing Celeron B820 and Celeron 797 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2873	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Celeron
Power efficiency	1.35	no data
Architecture codename	Sandy Bridge (2011−2013)	Sandy Bridge (2011−2013)
Release date	1 July 2012 (12 years ago)	1 January 2012 (12 years ago)
Launch price (MSRP)	$86	$107

Detailed specifications

Celeron B820 and Celeron 797 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	1.4 GHz
Boost clock speed	1.7 GHz	1.4 GHz
Bus type	DMI 2.0	DMI 2.0
Bus rate	4 × 5 GT/s	4 × 5 GT/s
Multiplier	17	14
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	2 MB (shared)	1.5 MB (shared)
Chip lithography	32 nm	32 nm
Die size	131 mm2	131 mm2
Maximum core temperature	100 °C	100 °C
Number of transistors	504 million	504 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Celeron B820 and Celeron 797 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	FCPGA988,PGA988	Intel BGA1023
Power consumption (TDP)	35 Watt	17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron B820 and Celeron 797. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2
FMA	+	+
Enhanced SpeedStep (EIST)	+	+
My WiFi	-	-
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
Demand Based Switching	-	-
FDI	+	+
Fast Memory Access	+	+

Security technologies

Celeron B820 and Celeron 797 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Anti-Theft	-	-

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron B820 and Celeron 797 are enumerated here.

VT-d	-	-
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron B820 and Celeron 797. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16 GB	16 GB
Max memory channels	2	2
Maximum memory bandwidth	21.335 GB/s	21.335 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	Intel® HD Graphics for 2nd Generation Intel® Processors
Clear Video HD	-	-
Graphics max frequency	1.05 GHz	950 MHz
InTru 3D	-	-

Graphics interfaces

Available interfaces and connections of Celeron B820 and Celeron 797 integrated GPUs.

Number of displays supported	2	2
eDP	+	+
DisplayPort	+	+
HDMI	+	+
SDVO	+	+
CRT	+	+

Peripherals

Specifications and connection of peripherals supported by Celeron B820 and Celeron 797.

PCIe version	2.0	2.0
PCI Express lanes	16	16

Pros & cons summary

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Recency	1 July 2012	1 January 2012
Physical cores	2	1
Threads	2	1
Power consumption (TDP)	35 Watt	17 Watt

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