A8-4557M vs Atom Z520

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	3730	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Atom	AMD A-Series
Power efficiency	1.48	no data
Designer	Intel	AMD
Architecture codename	Silverthorne (2008−2010)	Trinity (2012−2013)
Release date	2 April 2008 (18 years ago)	15 May 2012 (13 years ago)
Launch price (MSRP)	$65	no data

Detailed specifications

Basic parameters of Atom Z520 and A8-4557M: 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)	4 (Quad-Core)
Threads	2	4
Base clock speed	1.33 GHz	1.9 GHz
Boost clock speed	0.03 GHz	2.8 GHz
Bus type	FSB	no data
Bus rate	533.33 MT/s	no data
Multiplier	10	no data
L1 cache	56 KB	no data
L2 cache	512 KB	4 MB
L3 cache	0 KB	no data
Chip lithography	45 nm	32 nm
Die size	24.18 mm2	246 mm2
Maximum core temperature	90 °C	no data
Number of transistors	47 Million	1303 Million
64 bit support	-	+
Windows 11 compatibility	-	-
VID voltage range	0.75-1.1V	no data

Compatibility

Information on Atom Z520 and A8-4557M 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)	no data
Socket	PBGA441	BGA
Power consumption (TDP)	2 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom Z520 and A8-4557M. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3	86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX, FMA
AES-NI	-	+
FMA	-	+
AVX	-	+
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 A8-4557M 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 A8-4557M are enumerated here.

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

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

-

AMD Radeon HD 7640G (497 - 655 MHz)

Pros & cons summary

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Recency	2 April 2008	15 May 2012
Physical cores	1	4
Threads	2	4
Chip lithography	45 nm	32 nm
Power consumption (TDP)	2 Watt	35 Watt