Intel Core 2 Duo E7400 vs Intel Core 2 Quad Q9400

Comparative analysis of Intel Core 2 Duo E7400 and Intel Core 2 Quad Q9400 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, 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), 3DMark Fire Strike - Physics Score.

Intel Core 2 Duo E7400

Intel Core 2 Quad Q9400

Differences

Reasons to consider the Intel Core 2 Duo E7400

CPU is newer: launch date 1 month(s) later
Around 5% higher clock speed: 2.8 GHz vs 2.67 GHz
Around 4% higher maximum core temperature: 74.1°C vs 71.4°C
Around 46% lower typical power consumption: 65 Watt vs 95 Watt
6.8x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 0.639 vs 0.094

Specifications (specs)
Launch date	October 2008 vs August 2008
Maximum frequency	2.8 GHz vs 2.67 GHz
Maximum core temperature	74.1°C vs 71.4°C
Thermal Design Power (TDP)	65 Watt vs 95 Watt
Benchmarks
Geekbench 4 - Single Core	377 vs 376
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.639 vs 0.094

Reasons to consider the Intel Core 2 Quad Q9400

2 more cores, run more applications at once: 4 vs 2
4x 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
Around 3% better performance in PassMark - Single thread mark: 1138 vs 1108
2.1x better performance in PassMark - CPU mark: 2132 vs 1027
Around 78% better performance in Geekbench 4 - Multi-Core: 1151 vs 646
Around 87% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 0.574 vs 0.307
Around 39% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 26.509 vs 19.088
Around 68% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.136 vs 0.081
Around 85% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.189 vs 2.262

Specifications (specs)
Number of cores	4 vs 2
L1 cache	256 KB vs 64 KB
L2 cache	6144 KB vs 3072 KB
Benchmarks
PassMark - Single thread mark	1138 vs 1108
PassMark - CPU mark	2132 vs 1027
Geekbench 4 - Multi-Core	1151 vs 646
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.574 vs 0.307
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	26.509 vs 19.088
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.136 vs 0.081
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.189 vs 2.262

Compare benchmarks

CPU 1: Intel Core 2 Duo E7400
CPU 2: Intel Core 2 Quad Q9400

PassMark - Single thread mark

CPU 1

CPU 2

1108

1138

PassMark - CPU mark

CPU 1

CPU 2

1027

2132

Geekbench 4 - Single Core

CPU 1

CPU 2

377

376

Geekbench 4 - Multi-Core

CPU 1

CPU 2

646

1151

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

0.307

0.574

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

CPU 1

CPU 2

19.088

26.509

CompuBench 1.5 Desktop - T-Rex (Frames/s)

CPU 1

CPU 2

0.081

0.136

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

0.639

0.094

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

2.262

4.189

Name	Intel Core 2 Duo E7400	Intel Core 2 Quad Q9400
PassMark - Single thread mark	1108	1138
PassMark - CPU mark	1027	2132
Geekbench 4 - Single Core	377	376
Geekbench 4 - Multi-Core	646	1151
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.307	0.574
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	19.088	26.509
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.081	0.136
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.639	0.094
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	2.262	4.189
3DMark Fire Strike - Physics Score		0

Compare specifications (specs)

	Intel Core 2 Duo E7400	Intel Core 2 Quad Q9400
Essentials
Architecture codename	Wolfdale	Yorkfield
Launch date	October 2008	August 2008
Place in performance rating	3116	3118
Price now	$28.99	$33.98
Processor Number	E7400	Q9400
Series	Legacy Intel® Core™ Processors	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Value for money (0-100)	18.04	28.99
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	2.80 GHz	2.66 GHz
Bus Speed	1066 MHz FSB	1333 MHz FSB
Die size	82 mm2	164 mm2
L1 cache	64 KB	256 KB
L2 cache	3072 KB	6144 KB
Manufacturing process technology	45 nm	45 nm
Maximum case temperature (TCase)	74 °C	71 °C
Maximum core temperature	74.1°C	71.4°C
Maximum frequency	2.8 GHz	2.67 GHz
Number of cores	2	4
Transistor count	228 million	456 million
VID voltage range	0.8500V-1.3625V	0.8500V-1.3625V
Memory
Supported memory types	DDR1, DDR2, DDR3	DDR1, DDR2, DDR3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm	37.5mm x 37.5mm
Sockets supported	LGA775	LGA775
Thermal Design Power (TDP)	65 Watt	95 Watt
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
FSB parity
Idle States
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)