Intel Celeron B840 vs Intel Core i7-2620M

Comparative analysis of Intel Celeron B840 and Intel Core i7-2620M 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 B840

Intel Core i7-2620M

Differences

Reasons to consider the Intel Core i7-2620M

2 more threads: 4 vs 2
Around 79% higher clock speed: 3.40 GHz vs 1.9 GHz
2x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 66% better performance in PassMark - Single thread mark: 1460 vs 882
2.5x better performance in PassMark - CPU mark: 2425 vs 967
Around 72% better performance in Geekbench 4 - Single Core: 592 vs 345
2.1x better performance in Geekbench 4 - Multi-Core: 1278 vs 619

Specifications (specs)
Number of threads	4 vs 2
Maximum frequency	3.40 GHz vs 1.9 GHz
L3 cache	4096 KB vs 2048 KB
Benchmarks
PassMark - Single thread mark	1460 vs 882
PassMark - CPU mark	2425 vs 967
Geekbench 4 - Single Core	592 vs 345
Geekbench 4 - Multi-Core	1278 vs 619

Compare benchmarks

CPU 1: Intel Celeron B840
CPU 2: Intel Core i7-2620M

PassMark - Single thread mark

CPU 1

CPU 2

882

1460

PassMark - CPU mark

CPU 1

CPU 2

967

2425

Geekbench 4 - Single Core

CPU 1

CPU 2

345

592

Geekbench 4 - Multi-Core

CPU 1

CPU 2

619

1278

Name	Intel Celeron B840	Intel Core i7-2620M
PassMark - Single thread mark	882	1460
PassMark - CPU mark	967	2425
Geekbench 4 - Single Core	345	592
Geekbench 4 - Multi-Core	619	1278
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		1.988
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		34.526
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.225
CompuBench 1.5 Desktop - Video Composition (Frames/s)		0.763
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		2.114

Compare specifications (specs)

	Intel Celeron B840	Intel Core i7-2620M
Essentials
Architecture codename	Sandy Bridge	Sandy Bridge
Launch date	15 March 2011	20 February 2011
Launch price (MSRP)	$86	$346
Place in performance rating	2788	2789
Processor Number	B840	i7-2620M
Series	Legacy Intel® Celeron® Processor	Legacy Intel® Core™ Processors
Status	Launched	Launched
Vertical segment	Mobile	Mobile
Price now		$179.21
Value for money (0-100)		6.31
Performance
64 bit support
Base frequency	1.90 GHz	2.70 GHz
Bus Speed	5 GT/s DMI	5 GT/s DMI
Die size	131 mm	149 mm
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	2048 KB	4096 KB
Manufacturing process technology	32 nm	32 nm
Maximum core temperature	100C	100 C
Maximum frequency	1.9 GHz	3.40 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	16 GB
Supported memory types	DDR3 1066/1333	DDR3 1066/1333
Graphics
Graphics base frequency	650 MHz	650 MHz
Graphics max dynamic frequency	1.00 GHz	1.30 GHz
Graphics max frequency	1 GHz	1.3 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	37.5mm x 37.5mm (rPGA988B)	37.5mm x 37.5mm (rPGA988B); 31mm x 24mm (BGA1023)
Sockets supported	FCPGA988	FCBGA1023, PPGA988
Thermal Design Power (TDP)	35 Watt	35 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
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
Instruction set extensions		Intel® AVX
Intel® Advanced Vector Extensions (AVX)
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
AMD Virtualization (AMD-V™)
Intel® VT-x with Extended Page Tables (EPT)