Intel Atom E645CT vs Intel Pentium E5800

Comparative analysis of Intel Atom E645CT and Intel Pentium E5800 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Compatibility, Peripherals, Advanced Technologies, Virtualization, Security & Reliability. 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 - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

Intel Atom E645CT

Intel Pentium E5800

Differences

Reasons to consider the Intel Atom E645CT

9.3x lower typical power consumption: 7 Watt vs 65 Watt

Thermal Design Power (TDP)	7 Watt vs 65 Watt

Reasons to consider the Intel Pentium E5800

1 more cores, run more applications at once: 2 vs 1
Around 220% higher clock speed: 3.2 GHz vs 1 GHz
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

Number of cores	2 vs 1
Maximum frequency	3.2 GHz vs 1 GHz
L1 cache	64 KB (per core) vs 64 KB (per core)
L2 cache	2048 KB (shared) vs 512 KB (per core)

Compare benchmarks

CPU 1: Intel Atom E645CT
CPU 2: Intel Pentium E5800

Name	Intel Atom E645CT	Intel Pentium E5800
PassMark - Single thread mark		1273
PassMark - CPU mark		1170
Geekbench 4 - Single Core		382
Geekbench 4 - Multi-Core		648
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		0.389
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		10.444
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.09
CompuBench 1.5 Desktop - Video Composition (Frames/s)		0.556
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		2.573

Compare specifications (specs)

	Intel Atom E645CT	Intel Pentium E5800
Essentials
Architecture codename	Stellarton	Wolfdale
Launch date	November 2010	November 2010
Place in performance rating	not rated	3073
Processor Number	E645CT	E5800
Series	Legacy Intel Atom® Processors	Legacy Intel® Pentium® Processor
Status	Discontinued	Discontinued
Vertical segment	Embedded	Desktop
Launch price (MSRP)		$68
Price now		$29.99
Value for money (0-100)		18.63
Performance
Base frequency	1.00 GHz	3.20 GHz
Bus Speed	2.5 GT/s PCIE	800 MHz FSB
Die size	26 mm	82 mm2
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	512 KB (per core)	2048 KB (shared)
Manufacturing process technology	45 nm	45 nm
Maximum frequency	1 GHz	3.2 GHz
Number of cores	1	2
Number of threads	2
Transistor count	47 million	228 million
64 bit support
Maximum core temperature		74.1°C
VID voltage range		0.8500V-1.3625V
Memory
Max memory channels	1
Maximum memory size	2.93 GB
Supported memory types	DDR2 800	DDR1, DDR2, DDR3
Graphics
Graphics base frequency	320 MHz
Processor graphics	Integrated
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	FCBGA1466	LGA775
Thermal Design Power (TDP)	7 Watt	65 Watt
Peripherals
Max number of PCIe lanes	2
PCIe configurations	x1, root complex only
Advanced Technologies
Enhanced Intel SpeedStep® technology
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Idle States
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)