Intel Core 2 Quad Q8400 vs Intel Core 2 Duo E8400

Comparative analysis of Intel Core 2 Quad Q8400 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, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), 3DMark Fire Strike - Physics Score.

Intel Core 2 Quad Q8400

Intel Core 2 Duo E8400

Differences

Reasons to consider the Intel Core 2 Quad Q8400

CPU is newer: launch date 1 year(s) 3 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 72% better performance in PassMark - CPU mark: 2068 vs 1204
Around 54% better performance in Geekbench 4 - Multi-Core: 1139 vs 738
Around 85% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 0.609 vs 0.33
2.1x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 1.4 vs 0.68
2x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.93 vs 2.408
Around 73% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.171 vs 0.099

Specifications (specs)
Launch date	April 2009 vs January 2008
Number of cores	4 vs 2
L1 cache	256 KB vs 128 KB
Benchmarks
PassMark - CPU mark	2068 vs 1204
Geekbench 4 - Multi-Core	1139 vs 738
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.609 vs 0.33
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.4 vs 0.68
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.93 vs 2.408
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.171 vs 0.099

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 50% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 46% lower typical power consumption: 65 Watt vs 95 Watt
Around 8% better performance in PassMark - Single thread mark: 1237 vs 1144
Around 17% better performance in Geekbench 4 - Single Core: 422 vs 362
Around 28% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 26.311 vs 20.494

Specifications (specs)
Maximum frequency	3 GHz vs 2.67 GHz
Maximum core temperature	72.4°C vs 71.4°C
L2 cache	6144 KB vs 4096 KB
Thermal Design Power (TDP)	65 Watt vs 95 Watt
Benchmarks
PassMark - Single thread mark	1237 vs 1144
Geekbench 4 - Single Core	422 vs 362
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	26.311 vs 20.494

Compare benchmarks

CPU 1: Intel Core 2 Quad Q8400
CPU 2: Intel Core 2 Duo E8400

PassMark - Single thread mark

CPU 1

CPU 2

1144

1237

PassMark - CPU mark

CPU 1

CPU 2

2068

1204

Geekbench 4 - Single Core

CPU 1

CPU 2

362

422

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1139

738

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

0.609

0.33

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

CPU 1

CPU 2

20.494

26.311

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

1.4

0.68

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

4.93

2.408

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

CPU 1

CPU 2

0.171

0.099

Name	Intel Core 2 Quad Q8400	Intel Core 2 Duo E8400
PassMark - Single thread mark	1144	1237
PassMark - CPU mark	2068	1204
Geekbench 4 - Single Core	362	422
Geekbench 4 - Multi-Core	1139	738
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.609	0.33
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	20.494	26.311
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.4	0.68
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.93	2.408
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.171	0.099
3DMark Fire Strike - Physics Score		2400

Compare specifications (specs)

	Intel Core 2 Quad Q8400	Intel Core 2 Duo E8400
Essentials
Architecture codename	Yorkfield	Wolfdale
Launch date	April 2009	January 2008
Place in performance rating	3005	3024
Price now	$99.50	$129.95
Processor Number	Q8400	E8400
Series	Legacy Intel® Core™ Processors	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Value for money (0-100)	9.38	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	4096 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)