Pentium III 866 vs Atom N455

Primary details

Comparing Atom N455 and Pentium III 866 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	Pinetrail (2009−2011)	Coppermine T (2000)
Release date	1 June 2010 (14 years ago)	20 March 2000 (24 years ago)
Launch price (MSRP)	$64	no data

Detailed specifications

Atom N455 and Pentium III 866 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	1.66 GHz	no data
Boost clock speed	1.67 GHz	0.87 GHz
Bus rate	533 MHz	no data
L1 cache	64 KB (per core)	32 KB
L2 cache	512K (per core)	256 KB
L3 cache	0 KB	0 KB
Chip lithography	45 nm	180 nm
Die size	66 mm2	106 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	no data	80 °C
Number of transistors	123 million	28 million
64 bit support	+	-
Windows 11 compatibility	-	-

Compatibility

Information on Atom N455 and Pentium III 866 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	2
Socket	FCBGA559	370
Power consumption (TDP)	6.5 Watt	27 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom N455 and Pentium III 866. 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
Thermal Monitoring	+	-
Demand Based Switching	-	no data

Security technologies

Atom N455 and Pentium III 866 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 N455 and Pentium III 866 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom N455 and Pentium III 866. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	2 GB	no data
Max memory channels	1	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Intel GMA 3150

On certain motherboards (Chipset feature)

Pros & cons summary

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Recency	1 June 2010	20 March 2000
Threads	2	1
Chip lithography	45 nm	180 nm
Power consumption (TDP)	6 Watt	27 Watt

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