Intel Core 2 Quad Q9400 vs Intel Core 2 Duo E8400

Comparative analysis of Intel Core 2 Quad Q9400 and Intel Core 2 Duo E8400 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, 3DMark Fire Strike - Physics Score, 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 Core 2 Quad Q9400

Intel Core 2 Duo E8400

Differences

Reasons to consider the Intel Core 2 Quad Q9400

CPU is newer: launch date 7 month(s) later
2 more cores, run more applications at once: 4 vs 2
2x more L1 cache, more data can be stored in the L1 cache for quick access later
Around 78% better performance in PassMark - CPU mark: 2150 vs 1210
Around 56% better performance in Geekbench 4 - Multi-Core: 1151 vs 738
Around 74% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 0.574 vs 0.33
Around 1% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 26.509 vs 26.311
Around 37% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.136 vs 0.099
Around 74% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.189 vs 2.408

Specifications (specs)
Launch date	August 2008 vs January 2008
Number of cores	4 vs 2
L1 cache	256 KB vs 128 KB
Benchmarks
PassMark - CPU mark	2150 vs 1210
Geekbench 4 - Multi-Core	1151 vs 738
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.574 vs 0.33
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	26.509 vs 26.311
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.136 vs 0.099
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.189 vs 2.408

Reasons to consider the Intel Core 2 Duo E8400

Around 12% higher clock speed: 3 GHz vs 2.67 GHz
Around 1% higher maximum core temperature: 72.4°C vs 71.4°C
Around 46% lower typical power consumption: 65 Watt vs 95 Watt
Around 8% better performance in PassMark - Single thread mark: 1234 vs 1139
Around 12% better performance in Geekbench 4 - Single Core: 422 vs 376
7.2x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 0.68 vs 0.094

Specifications (specs)
Maximum frequency	3 GHz vs 2.67 GHz
Maximum core temperature	72.4°C vs 71.4°C
Thermal Design Power (TDP)	65 Watt vs 95 Watt
Benchmarks
PassMark - Single thread mark	1234 vs 1139
Geekbench 4 - Single Core	422 vs 376
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.68 vs 0.094

Compare benchmarks

CPU 1: Intel Core 2 Quad Q9400
CPU 2: Intel Core 2 Duo E8400

PassMark - Single thread mark

CPU 1

CPU 2

1139

1234

PassMark - CPU mark

CPU 1

CPU 2

2150

1210

Geekbench 4 - Single Core

CPU 1

CPU 2

376

422

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1151

738

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

0.574

0.33

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

CPU 1

CPU 2

26.509

26.311

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

CPU 1

CPU 2

0.136

0.099

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

0.094

0.68

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

4.189

2.408

Name	Intel Core 2 Quad Q9400	Intel Core 2 Duo E8400
PassMark - Single thread mark	1139	1234
PassMark - CPU mark	2150	1210
Geekbench 4 - Single Core	376	422
Geekbench 4 - Multi-Core	1151	738
3DMark Fire Strike - Physics Score	0	2400
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.574	0.33
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	26.509	26.311
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.136	0.099
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.094	0.68
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.189	2.408

Compare specifications (specs)

	Intel Core 2 Quad Q9400	Intel Core 2 Duo E8400
Essentials
Architecture codename	Yorkfield	Wolfdale
Launch date	August 2008	January 2008
Place in performance rating	3130	2981
Price now	$33.98	$129.95
Processor Number	Q9400	E8400
Series	Legacy Intel® Core™ Processors	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Value for money (0-100)	28.99	4.87
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	2.66 GHz	3.00 GHz
Bus Speed	1333 MHz FSB	1333 MHz FSB
Die size	164 mm2	107 mm2
L1 cache	256 KB	128 KB
L2 cache	6144 KB	6144 KB
Manufacturing process technology	45 nm	45 nm
Maximum case temperature (TCase)	71 °C	72 °C
Maximum core temperature	71.4°C	72.4°C
Maximum frequency	2.67 GHz	3 GHz
Number of cores	4	2
Transistor count	456 million	410 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)	95 Watt	65 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)