Intel Core 2 Quad Q8400 vs Intel Core 2 Quad Q9650

Comparative analysis of Intel Core 2 Quad Q8400 and Intel Core 2 Quad Q9650 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 Quad Q9650

Differences

Reasons to consider the Intel Core 2 Quad Q8400

CPU is newer: launch date 8 month(s) later
Around 4% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 0.609 vs 0.587
Around 19% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 1.4 vs 1.175
Around 15% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.93 vs 4.276
Around 6% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.171 vs 0.162

Specifications (specs)
Launch date	April 2009 vs August 2008
Benchmarks
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.609 vs 0.587
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.4 vs 1.175
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.93 vs 4.276
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.171 vs 0.162

Reasons to consider the Intel Core 2 Quad Q9650

Around 12% higher clock speed: 3 GHz vs 2.67 GHz
Around 50% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 12% better performance in PassMark - Single thread mark: 1282 vs 1141
Around 20% better performance in PassMark - CPU mark: 2484 vs 2068
Around 23% better performance in Geekbench 4 - Single Core: 444 vs 362
Around 23% better performance in Geekbench 4 - Multi-Core: 1400 vs 1139
Around 51% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 30.945 vs 20.494

Specifications (specs)
Maximum frequency	3 GHz vs 2.67 GHz
L2 cache	6144 KB (per die) vs 4096 KB
Benchmarks
PassMark - Single thread mark	1282 vs 1141
PassMark - CPU mark	2484 vs 2068
Geekbench 4 - Single Core	444 vs 362
Geekbench 4 - Multi-Core	1400 vs 1139
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	30.945 vs 20.494

Compare benchmarks

CPU 1: Intel Core 2 Quad Q8400
CPU 2: Intel Core 2 Quad Q9650

PassMark - Single thread mark

CPU 1

CPU 2

1141

1282

PassMark - CPU mark

CPU 1

CPU 2

2068

2484

Geekbench 4 - Single Core

CPU 1

CPU 2

362

444

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1139

1400

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

0.609

0.587

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

CPU 1

CPU 2

20.494

30.945

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

1.4

1.175

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

4.93

4.276

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

CPU 1

CPU 2

0.171

0.162

Name	Intel Core 2 Quad Q8400	Intel Core 2 Quad Q9650
PassMark - Single thread mark	1141	1282
PassMark - CPU mark	2068	2484
Geekbench 4 - Single Core	362	444
Geekbench 4 - Multi-Core	1139	1400
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.609	0.587
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	20.494	30.945
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.4	1.175
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.93	4.276
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.171	0.162
3DMark Fire Strike - Physics Score		0

Compare specifications (specs)

	Intel Core 2 Quad Q8400	Intel Core 2 Quad Q9650
Essentials
Architecture codename	Yorkfield	Yorkfield
Launch date	April 2009	August 2008
Place in performance rating	3019	2998
Price now	$99.50	$54.49
Processor Number	Q8400	Q9650
Series	Legacy Intel® Core™ Processors	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Value for money (0-100)	9.38	22.69
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	214 mm2
L1 cache	256 KB	64 KB (per core)
L2 cache	4096 KB	6144 KB (per die)
Manufacturing process technology	45 nm	45 nm
Maximum case temperature (TCase)	71 °C
Maximum core temperature	71.4°C	71.4°C
Maximum frequency	2.67 GHz	3 GHz
Number of cores	4	4
Transistor count	456 million	820 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	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)