Pentium III 1400S vs Atom Z2520

Primary details

Comparing Atom Z2520 and Pentium III 1400S processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	3360
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Power efficiency	no data	0.35
Architecture codename	Clovertrail (2013)	Tualatin (2000−2002)
Release date	27 February 2013 (11 years ago)	January 2002 (22 years ago)

Detailed specifications

Atom Z2520 and Pentium III 1400S basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	2 (Dual-core)	1 (Single-Core)
Threads	4	1
Base clock speed	1.2 GHz	no data
Boost clock speed	1.2 GHz	1.4 GHz
L1 cache	64 KB (per core)	8 KB
L2 cache	512 KB (per core)	512 KB
L3 cache	0 KB	0 KB
Chip lithography	32 nm	130 nm
Die size	65 mm2	80 mm2
Maximum core temperature	90 °C	no data
Maximum case temperature (TCase)	no data	69 °C
Number of transistors	140 million	44 million
64 bit support	-	-
Windows 11 compatibility	-	-

Compatibility

Information on Atom Z2520 and Pentium III 1400S compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	FC-MB4760	370
Power consumption (TDP)	3 Watt	32 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom Z2520 and Pentium III 1400S. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3	no data
Enhanced SpeedStep (EIST)	+	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
PAE	32 Bit	no data
Smart Idle	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Atom Z2520 and Pentium III 1400S are enumerated here.

VT-x

+

no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom Z2520 and Pentium III 1400S. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR2	no data
Maximum memory size	2 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	8.5 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

SGX 544MP2

no data

Graphics interfaces

Available interfaces and connections of Atom Z2520 and Pentium III 1400S integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Atom Z2520 and Pentium III 1400S.

USB revision	2.0 OTG, USB-SPH 2.0	no data
Number of USB ports	2	no data
UART	3	no data

Pros & cons summary

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Physical cores	2	1
Threads	4	1
Chip lithography	32 nm	130 nm
Power consumption (TDP)	3 Watt	32 Watt

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