Intel Core 2 Quad Q9550 vs Intel Core 2 Quad Q8400

Comparative analysis of Intel Core 2 Quad Q9550 and Intel Core 2 Quad Q8400 processors for all known characteristics in the following categories: Essentials, Performance, Compatibility, Security & Reliability, Advanced Technologies, Virtualization, Memory. 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 Q9550

Intel Core 2 Quad Q8400

Differences

Reasons to consider the Intel Core 2 Quad Q9550

Around 7% better performance in PassMark - Single thread mark: 1221 vs 1144
Around 13% better performance in PassMark - CPU mark: 2346 vs 2068
Around 14% better performance in Geekbench 4 - Single Core: 412 vs 362
Around 14% better performance in Geekbench 4 - Multi-Core: 1299 vs 1139
Around 51% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 30.904 vs 20.494
Around 2% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.175 vs 0.171

Benchmarks
PassMark - Single thread mark	1221 vs 1144
PassMark - CPU mark	2346 vs 2068
Geekbench 4 - Single Core	412 vs 362
Geekbench 4 - Multi-Core	1299 vs 1139
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.612 vs 0.609
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	30.904 vs 20.494
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.175 vs 0.171

Reasons to consider the Intel Core 2 Quad Q8400

Around 11% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 1.4 vs 1.258
Around 10% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.93 vs 4.476

Benchmarks
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.4 vs 1.258
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.93 vs 4.476

Compare benchmarks

CPU 1: Intel Core 2 Quad Q9550
CPU 2: Intel Core 2 Quad Q8400

PassMark - Single thread mark

CPU 1

CPU 2

1221

1144

PassMark - CPU mark

CPU 1

CPU 2

2346

2068

Geekbench 4 - Single Core

CPU 1

CPU 2

412

362

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1299

1139

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

0.612

0.609

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

CPU 1

CPU 2

30.904

20.494

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

CPU 1

CPU 2

0.175

0.171

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

1.258

1.4

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

4.476

4.93

Name	Intel Core 2 Quad Q9550	Intel Core 2 Quad Q8400
PassMark - Single thread mark	1221	1144
PassMark - CPU mark	2346	2068
Geekbench 4 - Single Core	412	362
Geekbench 4 - Multi-Core	1299	1139
3DMark Fire Strike - Physics Score	0
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.612	0.609
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	30.904	20.494
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.175	0.171
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.258	1.4
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.476	4.93

Compare specifications (specs)

	Intel Core 2 Quad Q9550	Intel Core 2 Quad Q8400
Essentials
Architecture codename	Yorkfield	Yorkfield
Launch date	Q1'08	April 2009
Place in performance rating	3013	3005
Processor Number	Q9550	Q8400
Series	Legacy Intel® Core™ Processors	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Vertical segment	Desktop	Desktop
Price now		$99.50
Value for money (0-100)		9.38
Performance
64 bit support
Base frequency	2.83 GHz	2.66 GHz
Bus Speed	1333 MHz FSB	1333 MHz FSB
Die size	214 mm2	164 mm2
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	71.4°C	71.4°C
Number of cores	4	4
Transistor count	820 million	456 million
VID voltage range	0.8500V-1.3625V	0.8500V-1.3625V
L1 cache		256 KB
L2 cache		4096 KB
Maximum case temperature (TCase)		71 °C
Maximum frequency		2.67 GHz
Compatibility
Low Halogen Options Available
Package Size	37.5mm x 37.5mm	37.5mm x 37.5mm
Sockets supported	LGA775	LGA775
Thermal Design Power (TDP)	95 Watt	95 Watt
Max number of CPUs in a configuration		1
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)
Memory
Supported memory types		DDR1, DDR2, DDR3