Intel Atom Z515 vs Intel Core 2 Quad Q8400

Comparative analysis of Intel Atom Z515 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, 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 Atom Z515

Intel Core 2 Quad Q8400

Differences

Reasons to consider the Intel Atom Z515

Around 26% higher maximum core temperature: 90°C vs 71.4°C
95x lower typical power consumption: 1.4 Watt vs 95 Watt

Maximum core temperature	90°C vs 71.4°C
Thermal Design Power (TDP)	1.4 Watt vs 95 Watt

Reasons to consider the Intel Core 2 Quad Q8400

3 more cores, run more applications at once: 4 vs 1
Around 123% higher clock speed: 2.67 GHz vs 1.2 GHz
4x more L1 cache, more data can be stored in the L1 cache for quick access later
8x more L2 cache, more data can be stored in the L2 cache for quick access later
9.5x better performance in PassMark - CPU mark: 2067 vs 218

Specifications (specs)
Number of cores	4 vs 1
Maximum frequency	2.67 GHz vs 1.2 GHz
L1 cache	256 KB vs 64 KB (per core)
L2 cache	4096 KB vs 512 KB (per core)
Benchmarks
PassMark - CPU mark	2067 vs 218

Compare benchmarks

CPU 1: Intel Atom Z515
CPU 2: Intel Core 2 Quad Q8400

PassMark - CPU mark

CPU 1

CPU 2

218

2067

Name	Intel Atom Z515	Intel Core 2 Quad Q8400
PassMark - Single thread mark	0	1142
PassMark - CPU mark	218	2067
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 Atom Z515	Intel Core 2 Quad Q8400
Essentials
Architecture codename	Silverthorne	Yorkfield
Launch date	April 2009	April 2009
Place in performance rating	3336	3008
Processor Number	Z515	Q8400
Series	Legacy Intel Atom® Processors	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Vertical segment	Mobile	Desktop
Price now		$99.50
Value for money (0-100)		9.38
Performance
Base frequency	1.20 GHz	2.66 GHz
Bus Speed	400 MHz FSB	1333 MHz FSB
Die size	26 mm2	164 mm2
L1 cache	64 KB (per core)	256 KB
L2 cache	512 KB (per core)	4096 KB
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	90°C	71.4°C
Maximum frequency	1.2 GHz	2.67 GHz
Number of cores	1	4
Transistor count	47 million	456 million
64 bit support
Maximum case temperature (TCase)		71 °C
VID voltage range		0.8500V-1.3625V
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	13mm x 14mm	37.5mm x 37.5mm
Sockets supported	PBGA441	LGA775
Thermal Design Power (TDP)	1.4 Watt	95 Watt
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
FSB parity
Idle States
Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3
Intel 64
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
Intel® AES New Instructions
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Memory
Supported memory types		DDR1, DDR2, DDR3