i7-2655QM vs Atom Z515

Primary details

Comparing Atom Z515 and Core i7-2655QM processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	3321	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Atom	Intel Core i7
Power efficiency	20.38	no data
Architecture codename	Silverthorne (2008−2010)	Sandy Bridge (2011−2013)
Release date	8 April 2009 (15 years ago)	4 September 2011 (13 years ago)

Detailed specifications

Atom Z515 and Core i7-2655QM 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)	4 (Quad-Core)
Threads	1	8
Base clock speed	1.2 GHz	no data
Boost clock speed	1.2 GHz	2.1 GHz
Bus type	FSB	DMI 2.0
Bus rate	400 MT/s	4 × 5 GT/s
Multiplier	12	21
L1 cache	56 KB (per core)	256 KB
L2 cache	512 KB (per core)	1 MB
L3 cache	0 KB	6 MB
Chip lithography	45 nm	32 nm
Die size	26 mm2	216 mm2
Maximum core temperature	90 °C	no data
Number of transistors	47 million	1160 Million
64 bit support	-	+
Windows 11 compatibility	-	-

Compatibility

Information on Atom Z515 and Core i7-2655QM 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 (Uniprocessor)
Socket	PBGA441	no data
Power consumption (TDP)	1.4 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom Z515 and Core i7-2655QM. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3	no data
AES-NI	-	+
FMA	-	+
AVX	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
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 Z515 and Core i7-2655QM technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Atom Z515 and Core i7-2655QM are enumerated here.

VT-d	-	+
VT-x	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom Z515 and Core i7-2655QM. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	unknown	no data
Maximum memory size	no data	16 GB
Maximum memory bandwidth	no data	21.335 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

Intel HD Graphics 3000

Pros & cons summary

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Recency	8 April 2009	4 September 2011
Physical cores	1	4
Threads	1	8
Chip lithography	45 nm	32 nm
Power consumption (TDP)	1 Watt	45 Watt

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Should you still have questions on choice between Atom Z515 and Core i7-2655QM, ask them in Comments section, and we shall answer.

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