Intel Celeron B820 vs Intel Core i7-2677M

Comparative analysis of Intel Celeron B820 and Intel Core i7-2677M processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

Intel Celeron B820

Intel Core i7-2677M

Differences

Reasons to consider the Intel Celeron B820

CPU is newer: launch date 1 month(s) later
2x more maximum memory size: 16 GB vs 8.01 GB

Launch date	31 July 2011 vs 27 June 2011
Maximum memory size	16 GB vs 8.01 GB

Reasons to consider the Intel Core i7-2677M

2 more threads: 4 vs 2
Around 71% higher clock speed: 2.90 GHz vs 1.7 GHz
2x more L3 cache, more data can be stored in the L3 cache for quick access later
2.1x lower typical power consumption: 17 Watt vs 35 Watt
Around 68% better performance in PassMark - Single thread mark: 1260 vs 749
2.4x better performance in PassMark - CPU mark: 1912 vs 802
Around 70% better performance in Geekbench 4 - Single Core: 494 vs 290
Around 98% better performance in Geekbench 4 - Multi-Core: 1004 vs 508

Specifications (specs)
Number of threads	4 vs 2
Maximum frequency	2.90 GHz vs 1.7 GHz
L3 cache	4096 KB vs 2048 KB
Thermal Design Power (TDP)	17 Watt vs 35 Watt
Benchmarks
PassMark - Single thread mark	1260 vs 749
PassMark - CPU mark	1912 vs 802
Geekbench 4 - Single Core	494 vs 290
Geekbench 4 - Multi-Core	1004 vs 508

Compare benchmarks

CPU 1: Intel Celeron B820
CPU 2: Intel Core i7-2677M

PassMark - Single thread mark

CPU 1

CPU 2

749

1260

PassMark - CPU mark

CPU 1

CPU 2

802

1912

Geekbench 4 - Single Core

CPU 1

CPU 2

290

494

Geekbench 4 - Multi-Core

CPU 1

CPU 2

508

1004

Name	Intel Celeron B820	Intel Core i7-2677M
PassMark - Single thread mark	749	1260
PassMark - CPU mark	802	1912
Geekbench 4 - Single Core	290	494
Geekbench 4 - Multi-Core	508	1004
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		1.645
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		27.427
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.189
CompuBench 1.5 Desktop - Video Composition (Frames/s)		0.679
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		1.781

Compare specifications (specs)

	Intel Celeron B820	Intel Core i7-2677M
Essentials
Architecture codename	Sandy Bridge	Sandy Bridge
Launch date	31 July 2011	27 June 2011
Launch price (MSRP)	$86	$317
Place in performance rating	2924	2925
Price now	$39.29
Processor Number	B820	i7-2677M
Series	Legacy Intel® Celeron® Processor	Legacy Intel® Core™ Processors
Status	Launched	Launched
Value for money (0-100)	10.70
Vertical segment	Mobile	Mobile
Performance
64 bit support
Base frequency	1.70 GHz	1.80 GHz
Bus Speed	5 GT/s DMI	5 GT/s DMI
Die size	131 mm	149 mm
L1 cache	128 KB	128 KB
L2 cache	512 KB	512 KB
L3 cache	2048 KB	4096 KB
Manufacturing process technology	32 nm	32 nm
Maximum core temperature	100 °C	100 C
Maximum frequency	1.7 GHz	2.90 GHz
Number of cores	2	2
Number of threads	2	4
Transistor count	504 million	624 Million
Memory
Max memory channels	2	2
Maximum memory bandwidth	21.3 GB/s	21.3 GB/s
Maximum memory size	16 GB	8.01 GB
Supported memory types	DDR3 1066/1333	DDR3 1066/1333
Graphics
Graphics base frequency	650 MHz	350 MHz
Graphics max dynamic frequency	1.05 GHz	1.20 GHz
Graphics max frequency	1.05 GHz	1.2 GHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Processor graphics	Intel HD Graphics	Intel® HD Graphics 3000
Device ID		0x116
Graphics interfaces
CRT
DisplayPort
eDP
HDMI
Number of displays supported	2	2
SDVO
Wireless Display (WiDi) support
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mmx37.5mm (rPGA988B)	31.0mm x 24.0mm (BGA1023)
Sockets supported	FCPGA988	FCBGA1023
Thermal Design Power (TDP)	35 Watt	17 Watt
Peripherals
Max number of PCIe lanes	16	16
PCI Express revision	2.0	2.0
PCIe configurations	1x16, 2x8, 1x8 2x4	1x16, 2x8, 1x8 2x4
Security & Reliability
Anti-Theft technology
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Intel® Identity Protection technology
Advanced Technologies
4G WiMAX Wireless
Enhanced Intel SpeedStep® technology
Flexible Display interface (FDI)
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® AVX
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® My WiFi technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)