Intel Celeron B815 vs Intel Core i7-740QM

Comparative analysis of Intel Celeron B815 and Intel Core i7-740QM 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 B815

Intel Core i7-740QM

Differences

Reasons to consider the Intel Celeron B815

CPU is newer: launch date 2 year(s) 1 month(s) later
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
2x more maximum memory size: 16 GB vs 8 GB
Around 29% lower typical power consumption: 35 Watt vs 45 Watt

Launch date	1 November 2011 vs 23 September 2009
Manufacturing process technology	32 nm vs 45 nm
Maximum memory size	16 GB vs 8 GB
Thermal Design Power (TDP)	35 Watt vs 45 Watt

Reasons to consider the Intel Core i7-740QM

2 more cores, run more applications at once: 4 vs 2
6 more threads: 8 vs 2
Around 83% higher clock speed: 2.93 GHz vs 1.6 GHz
2x more L1 cache, more data can be stored in the L1 cache for quick access later
2x more L2 cache, more data can be stored in the L2 cache for quick access later
3x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 45% better performance in PassMark - Single thread mark: 1020 vs 705
2.5x better performance in PassMark - CPU mark: 1833 vs 731
Around 30% better performance in Geekbench 4 - Single Core: 367 vs 283
2.4x better performance in Geekbench 4 - Multi-Core: 1190 vs 495

Specifications (specs)
Number of cores	4 vs 2
Number of threads	8 vs 2
Maximum frequency	2.93 GHz vs 1.6 GHz
L1 cache	256 KB vs 64 KB (per core)
L2 cache	1024 KB vs 256 KB (per core)
L3 cache	6144 KB vs 2048 KB
Benchmarks
PassMark - Single thread mark	1020 vs 705
PassMark - CPU mark	1833 vs 731
Geekbench 4 - Single Core	367 vs 283
Geekbench 4 - Multi-Core	1190 vs 495

Compare benchmarks

CPU 1: Intel Celeron B815
CPU 2: Intel Core i7-740QM

PassMark - Single thread mark

CPU 1

CPU 2

705

1020

PassMark - CPU mark

CPU 1

CPU 2

731

1833

Geekbench 4 - Single Core

CPU 1

CPU 2

283

367

Geekbench 4 - Multi-Core

CPU 1

CPU 2

495

1190

Name	Intel Celeron B815	Intel Core i7-740QM
PassMark - Single thread mark	705	1020
PassMark - CPU mark	731	1833
Geekbench 4 - Single Core	283	367
Geekbench 4 - Multi-Core	495	1190
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		4.603
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		14.115
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.302
CompuBench 1.5 Desktop - Video Composition (Frames/s)		1.041
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		1.565

Compare specifications (specs)

	Intel Celeron B815	Intel Core i7-740QM
Essentials
Architecture codename	Sandy Bridge	Clarksfield
Launch date	1 November 2011	23 September 2009
Place in performance rating	2958	2966
Processor Number	B815	i7-740QM
Series	Legacy Intel® Celeron® Processor	Legacy Intel® Core™ Processors
Status	Launched	Discontinued
Vertical segment	Mobile	Mobile
Launch price (MSRP)		$546
Price now		$109.95
Value for money (0-100)		8.57
Performance
64 bit support
Base frequency	1.60 GHz	1.73 GHz
Bus Speed	5 GT/s DMI	2.5 GT/s DMI
Die size	131 mm	296 mm2
L1 cache	64 KB (per core)	256 KB
L2 cache	256 KB (per core)	1024 KB
L3 cache	2048 KB	6144 KB
Manufacturing process technology	32 nm	45 nm
Maximum core temperature	100 °C	100°C
Maximum frequency	1.6 GHz	2.93 GHz
Number of cores	2	4
Number of threads	2	8
Transistor count	504 million	774 million
Front-side bus (FSB)		2500 MHz
Memory
Max memory channels	2	2
Maximum memory bandwidth	21.3 GB/s	21 GB/s
Maximum memory size	16 GB	8 GB
Supported memory types	DDR3 1066/1333	DDR3 1066/1333
Graphics
Graphics base frequency	650 MHz
Graphics max dynamic frequency	1.05 GHz
Graphics max frequency	1.05 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
Graphics interfaces
CRT
DisplayPort
eDP
HDMI
Number of displays supported	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)	37.5mm x 37.5mm
Sockets supported	FCPGA988	PGA988
Thermal Design Power (TDP)	35 Watt	45 Watt
Peripherals
Max number of PCIe lanes	16	16
PCI Express revision	2.0	2
PCIe configurations	1x16, 2x8, 1x8 2x4	1x16, 2x8
Security & Reliability
Anti-Theft technology
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
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® SSE4.2
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
Physical Address Extensions (PAE)		36-bit
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)