Intel Celeron M U3400 vs Intel Core 2 Duo P8400

Comparative analysis of Intel Celeron M U3400 and Intel Core 2 Duo P8400 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 M U3400

Intel Core 2 Duo P8400

Differences

Reasons to consider the Intel Celeron M U3400

CPU is newer: launch date 1 year(s) 10 month(s) later
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
Around 39% lower typical power consumption: 18 Watt vs 25 Watt

Launch date	24 May 2010 vs 15 July 2008
Manufacturing process technology	32 nm vs 45 nm
Thermal Design Power (TDP)	18 Watt vs 25 Watt

Reasons to consider the Intel Core 2 Duo P8400

Around 113% higher clock speed: 2.26 GHz vs 1.06 GHz
6x more L2 cache, more data can be stored in the L2 cache for quick access later
2x better performance in PassMark - Single thread mark: 921 vs 456
Around 65% better performance in PassMark - CPU mark: 850 vs 516
Around 88% better performance in Geekbench 4 - Single Core: 302 vs 161
Around 68% better performance in Geekbench 4 - Multi-Core: 517 vs 307

Specifications (specs)
Maximum frequency	2.26 GHz vs 1.06 GHz
L2 cache	3072 KB vs 512 KB
Benchmarks
PassMark - Single thread mark	921 vs 456
PassMark - CPU mark	850 vs 516
Geekbench 4 - Single Core	302 vs 161
Geekbench 4 - Multi-Core	517 vs 307

Compare benchmarks

CPU 1: Intel Celeron M U3400
CPU 2: Intel Core 2 Duo P8400

PassMark - Single thread mark

CPU 1

CPU 2

456

921

PassMark - CPU mark

CPU 1

CPU 2

516

850

Geekbench 4 - Single Core

CPU 1

CPU 2

161

302

Geekbench 4 - Multi-Core

CPU 1

CPU 2

307

517

Name	Intel Celeron M U3400	Intel Core 2 Duo P8400
PassMark - Single thread mark	456	921
PassMark - CPU mark	516	850
Geekbench 4 - Single Core	161	302
Geekbench 4 - Multi-Core	307	517
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		0.23
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		13.234
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.049
CompuBench 1.5 Desktop - Video Composition (Frames/s)		0.446
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		1.273

Compare specifications (specs)

	Intel Celeron M U3400	Intel Core 2 Duo P8400
Essentials
Architecture codename	Arrandale	Penryn
Launch date	24 May 2010	15 July 2008
Place in performance rating	3218	3212
Processor Number	U3400	P8400
Series	Legacy Intel® Celeron® Processor	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Vertical segment	Mobile	Mobile
Launch price (MSRP)		$209
Price now		$297.01
Value for money (0-100)		1.44
Performance
64 bit support
Base frequency	1.06 GHz	2.26 GHz
Bus Speed	2.5 GT/s DMI	1066 MHz FSB
Die size	81 mm2	107 mm2
Front-side bus (FSB)	2500 MHz	1066 MHz
L2 cache	512 KB	3072 KB
L3 cache	2048 KB
Manufacturing process technology	32 nm	45 nm
Maximum core temperature	105°C	105°C
Maximum frequency	1.06 GHz	2.26 GHz
Number of cores	2	2
Number of threads	2	2
Transistor count	382 million	410 million
L1 cache		128 KB
VID voltage range		1.050V-1.150V
Memory
Max memory channels	2
Maximum memory bandwidth	12.8 GB/s
Maximum memory size	8 GB
Supported memory types	DDR3 800
Graphics
Graphics base frequency	166 MHz
Graphics max dynamic frequency	500 MHz
Intel® Clear Video technology
Intel® Flexible Display Interface (Intel® FDI)
Processor graphics	Intel HD Graphics
Graphics interfaces
Number of displays supported	2
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1
Package Size	BGA 34mm x 28mm	35 mm x 35mm
Sockets supported	BGA1288	PGA478, BGA479
Thermal Design Power (TDP)	18 Watt	25 Watt
Peripherals
Max number of PCIe lanes	16
PCI Express revision	2.0
PCIe configurations	1x16
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Intel 64
Intel® AES New Instructions
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Physical Address Extensions (PAE)	36-bit
Thermal Monitoring
FSB parity
Intel® Demand Based Switching
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)