Intel Atom D525 vs Intel Pentium D 840

Comparative analysis of Intel Atom D525 and Intel Pentium D 840 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, 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.

Intel Atom D525

Intel Pentium D 840

Differences

Reasons to consider the Intel Atom D525

CPU is newer: launch date 5 year(s) 1 month(s) later
Around 43% higher maximum core temperature: 100°C vs 69.8°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 90 nm
4x more L1 cache, more data can be stored in the L1 cache for quick access later
10x lower typical power consumption: 13 Watt vs 130 Watt

Launch date	21 June 2010 vs May 2005
Maximum core temperature	100°C vs 69.8°C
Manufacturing process technology	45 nm vs 90 nm
L1 cache	112 KB vs 28 KB
Thermal Design Power (TDP)	13 Watt vs 130 Watt

Reasons to consider the Intel Pentium D 840

Around 78% higher clock speed: 3.2 GHz vs 1.8 GHz
2x more L2 cache, more data can be stored in the L2 cache for quick access later
2.1x better performance in Geekbench 4 - Single Core: 186 vs 90
Around 25% better performance in Geekbench 4 - Multi-Core: 309 vs 247

Specifications (specs)
Maximum frequency	3.2 GHz vs 1.8 GHz
L2 cache	2048 KB vs 1024 KB
Max number of CPUs in a configuration	2 vs 1
Benchmarks
Geekbench 4 - Single Core	186 vs 90
Geekbench 4 - Multi-Core	309 vs 247

Compare benchmarks

CPU 1: Intel Atom D525
CPU 2: Intel Pentium D 840

Geekbench 4 - Single Core

CPU 1

CPU 2

186

Geekbench 4 - Multi-Core

CPU 1

CPU 2

247

309

Name	Intel Atom D525	Intel Pentium D 840
PassMark - Single thread mark	301
PassMark - CPU mark	398
Geekbench 4 - Single Core	90	186
Geekbench 4 - Multi-Core	247	309

Compare specifications (specs)

	Intel Atom D525	Intel Pentium D 840
Essentials
Architecture codename	Pineview	Smithfield
Launch date	21 June 2010	May 2005
Launch price (MSRP)	$63
Place in performance rating	3296	3298
Processor Number	D525	840
Series	Legacy Intel Atom® Processors	Legacy Intel® Pentium® Processor
Status	Discontinued	Discontinued
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	1.80 GHz	3.20 GHz
Bus Speed	2.5 GT/s DMI	800 MHz FSB
Die size	87 mm2	206 mm2
L1 cache	112 KB	28 KB
L2 cache	1024 KB	2048 KB
Manufacturing process technology	45 nm	90 nm
Maximum core temperature	100°C	69.8°C
Maximum frequency	1.8 GHz	3.2 GHz
Number of cores	2	2
Number of threads	4
Transistor count	176 million	230 million
VID voltage range	0.800V-1.175V	1.200V-1.400V
Memory
Max memory channels	1
Maximum memory bandwidth	6.4 GB/s
Maximum memory size	4 GB
Supported memory types	DDR3 800 (SODIMM only); DDR2 667/800	DDR1, DDR2, DDR3
Graphics
Processor graphics	Integrated
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	2
Package Size	22mm x 22mm	37.5mm x 37.5mm
Sockets supported	FCBGA559	PLGA775
Thermal Design Power (TDP)	13 Watt	130 Watt
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Physical Address Extensions (PAE)	32-bit	32-bit
Thermal Monitoring
FSB parity
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)