Intel Core 2 Quad Q9400 vs Intel Core 2 Duo E6550

Comparative analysis of Intel Core 2 Quad Q9400 and Intel Core 2 Duo E6550 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 E6550

Differences

Reasons to consider the Intel Core 2 Quad Q9400

CPU is newer: launch date 1 year(s) 1 month(s) later
2 more cores, run more applications at once: 4 vs 2
Around 15% higher clock speed: 2.67 GHz vs 2.33 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 65 nm
4x more L1 cache, more data can be stored in the L1 cache for quick access later
Around 50% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 25% better performance in PassMark - Single thread mark: 1139 vs 909
2.4x better performance in PassMark - CPU mark: 2150 vs 908
Around 24% better performance in Geekbench 4 - Single Core: 376 vs 303
2.2x better performance in Geekbench 4 - Multi-Core: 1151 vs 527
2.2x better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 0.574 vs 0.261
Around 42% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 26.509 vs 18.666
Around 77% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.136 vs 0.077
2.2x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.189 vs 1.88

Specifications (specs)
Launch date	August 2008 vs July 2007
Number of cores	4 vs 2
Maximum frequency	2.67 GHz vs 2.33 GHz
Manufacturing process technology	45 nm vs 65 nm
L1 cache	256 KB vs 64 KB
L2 cache	6144 KB vs 4096 KB
Benchmarks
PassMark - Single thread mark	1139 vs 909
PassMark - CPU mark	2150 vs 908
Geekbench 4 - Single Core	376 vs 303
Geekbench 4 - Multi-Core	1151 vs 527
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.574 vs 0.261
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	26.509 vs 18.666
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.136 vs 0.077
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.189 vs 1.88

Reasons to consider the Intel Core 2 Duo E6550

Around 1% higher maximum core temperature: 72°C vs 71.4°C
Around 46% lower typical power consumption: 65 Watt vs 95 Watt
3.9x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 0.371 vs 0.094

Specifications (specs)
Maximum core temperature	72°C vs 71.4°C
Thermal Design Power (TDP)	65 Watt vs 95 Watt
Benchmarks
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.371 vs 0.094

Compare benchmarks

CPU 1: Intel Core 2 Quad Q9400
CPU 2: Intel Core 2 Duo E6550

PassMark - Single thread mark

CPU 1

CPU 2

1139

909

PassMark - CPU mark

CPU 1

CPU 2

2150

908

Geekbench 4 - Single Core

CPU 1

CPU 2

376

303

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1151

527

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

0.574

0.261

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

CPU 1

CPU 2

26.509

18.666

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

CPU 1

CPU 2

0.136

0.077

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

0.094

0.371

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

4.189

1.88

Name	Intel Core 2 Quad Q9400	Intel Core 2 Duo E6550
PassMark - Single thread mark	1139	909
PassMark - CPU mark	2150	908
Geekbench 4 - Single Core	376	303
Geekbench 4 - Multi-Core	1151	527
3DMark Fire Strike - Physics Score	0
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.574	0.261
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	26.509	18.666
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.136	0.077
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.094	0.371
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.189	1.88

Compare specifications (specs)

	Intel Core 2 Quad Q9400	Intel Core 2 Duo E6550
Essentials
Architecture codename	Yorkfield	Conroe
Launch date	August 2008	July 2007
Place in performance rating	3130	3218
Price now	$33.98	$14.95
Processor Number	Q9400	E6550
Series	Legacy Intel® Core™ Processors	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Value for money (0-100)	28.99	29.56
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	2.66 GHz	2.33 GHz
Bus Speed	1333 MHz FSB	1333 MHz FSB
Die size	164 mm2	143 mm2
L1 cache	256 KB	64 KB
L2 cache	6144 KB	4096 KB
Manufacturing process technology	45 nm	65 nm
Maximum case temperature (TCase)	71 °C
Maximum core temperature	71.4°C	72°C
Maximum frequency	2.67 GHz	2.33 GHz
Number of cores	4	2
Transistor count	456 million	291 million
VID voltage range	0.8500V-1.3625V	0.8500V-1.5V
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	PLGA775
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)