Intel Core 2 Quad Q8400 vs AMD Athlon 64 FX-55

Comparative analysis of Intel Core 2 Quad Q8400 and AMD Athlon 64 FX-55 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).

Intel Core 2 Quad Q8400

AMD Athlon 64 FX-55

Differences

Reasons to consider the Intel Core 2 Quad Q8400

CPU is newer: launch date 4 year(s) 6 month(s) later
3 more cores, run more applications at once: 4 vs 1
Around 3% higher clock speed: 2.67 GHz vs 2.6 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 90 nm
2x more L1 cache, more data can be stored in the L1 cache for quick access later
4x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 9% lower typical power consumption: 95 Watt vs 104 Watt
2.3x better performance in PassMark - Single thread mark: 1144 vs 505
5.1x better performance in PassMark - CPU mark: 2068 vs 404

Specifications (specs)
Launch date	April 2009 vs October 2004
Number of cores	4 vs 1
Maximum frequency	2.67 GHz vs 2.6 GHz
Manufacturing process technology	45 nm vs 90 nm
L1 cache	256 KB vs 128 KB
L2 cache	4096 KB vs 1024 KB
Thermal Design Power (TDP)	95 Watt vs 104 Watt
Benchmarks
PassMark - Single thread mark	1144 vs 505
PassMark - CPU mark	2068 vs 404

Compare benchmarks

CPU 1: Intel Core 2 Quad Q8400
CPU 2: AMD Athlon 64 FX-55

PassMark - Single thread mark

CPU 1

CPU 2

1144

505

PassMark - CPU mark

CPU 1

CPU 2

2068

404

Name	Intel Core 2 Quad Q8400	AMD Athlon 64 FX-55
PassMark - Single thread mark	1144	505
PassMark - CPU mark	2068	404
Geekbench 4 - Single Core	362
Geekbench 4 - Multi-Core	1139
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.609
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	20.494
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.4
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.93
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.171

Compare specifications (specs)

	Intel Core 2 Quad Q8400	AMD Athlon 64 FX-55
Essentials
Architecture codename	Yorkfield	San Diego
Launch date	April 2009	October 2004
Place in performance rating	3005	2994
Price now	$99.50	$179.95
Processor Number	Q8400
Series	Legacy Intel® Core™ Processors
Status	Discontinued
Value for money (0-100)	9.38	1.18
Vertical segment	Desktop	Desktop
Launch price (MSRP)		$180
Performance
64 bit support
Base frequency	2.66 GHz
Bus Speed	1333 MHz FSB
Die size	164 mm2	115 mm
L1 cache	256 KB	128 KB
L2 cache	4096 KB	1024 KB
Manufacturing process technology	45 nm	90 nm
Maximum case temperature (TCase)	71 °C
Maximum core temperature	71.4°C
Maximum frequency	2.67 GHz	2.6 GHz
Number of cores	4	1
Transistor count	456 million	114 million
VID voltage range	0.8500V-1.3625V
Memory
Supported memory types	DDR1, DDR2, DDR3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm
Sockets supported	LGA775	939
Thermal Design Power (TDP)	95 Watt	104 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)