Pentium III 1000S vs Atom Z520

Primary details

Comparing Atom Z520 and Pentium III 1000S processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Atom	no data
Architecture codename	Silverthorne (2008−2010)	Tualatin (2000−2002)
Release date	2 April 2008 (16 years ago)	June 2001 (23 years ago)
Launch price (MSRP)	$65	no data

Detailed specifications

Atom Z520 and Pentium III 1000S 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	1 (Single-Core)	1 (Single-Core)
Threads	2	1
Base clock speed	1.33 GHz	no data
Boost clock speed	0.03 GHz	1 GHz
Bus type	FSB	no data
Bus rate	533.33 MT/s	no data
Multiplier	10	no data
L1 cache	56 KB	8 KB
L2 cache	512 KB	512 KB
L3 cache	0 KB	0 KB
Chip lithography	45 nm	130 nm
Die size	24.18 mm2	80 mm2
Maximum core temperature	90 °C	no data
Maximum case temperature (TCase)	no data	69 °C
Number of transistors	47 Million	44 million
64 bit support	-	-
Windows 11 compatibility	-	-
VID voltage range	0.75-1.1V	no data

Compatibility

Information on Atom Z520 and Pentium III 1000S 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 (Uniprocessor)	1
Socket	PBGA441	370
Power consumption (TDP)	2 Watt	30 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom Z520 and Pentium III 1000S. 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
Turbo Boost Technology	-	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	+	no data
FSB parity	-	no data

Security technologies

Atom Z520 and Pentium III 1000S technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Atom Z520 and Pentium III 1000S are enumerated here.

VT-d	-	no data
VT-x	+	no data

Pros & cons summary

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Threads	2	1
Chip lithography	45 nm	130 nm
Power consumption (TDP)	2 Watt	30 Watt

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Should you still have questions on choice between Atom Z520 and Pentium III 1000S, ask them in Comments section, and we shall answer.

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