Atom Z2520 vs Celeron 2955U

Primary details

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

Place in the ranking	3119	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	no data
Designer	Intel	Intel
Manufacturer	Intel	Intel
Architecture codename	Haswell (2013−2015)	Clovertrail (2013)
Release date	1 September 2013 (12 years ago)	27 February 2013 (12 years ago)

Detailed specifications

Celeron 2955U and Atom Z2520 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)	2 (Dual-core)
Threads	2	4
Base clock speed	1.4 GHz	1.2 GHz
Boost clock speed	1.4 GHz	1.2 GHz
Bus rate	5 GT/s	no data
L1 cache	64K (per core)	64 KB (per core)
L2 cache	256K (per core)	512 KB (per core)
L3 cache	2 MB (shared)	0 KB
Chip lithography	22 nm	32 nm
Die size	118 mm2	65 mm2
Maximum core temperature	100 °C	90 °C
Maximum case temperature (TCase)	105 °C	no data
Number of transistors	1,400 million	140 million
64 bit support	+	-
Windows 11 compatibility	-	-

Compatibility

Information on Celeron 2955U and Atom Z2520 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	FCBGA1168	FC-MB4760
Power consumption (TDP)	15 Watt	3 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 2955U and Atom Z2520. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE2, Intel® SSE3, Intel® SSSE3
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	+
Smart Response	-	no data
PAE	no data	32 Bit
GPIO	+	no data
Smart Connect	+	no data
FDI	-	no data
Smart Idle	no data	+
AMT	9.5	no data
Matrix Storage	-	no data
HD Audio	+	no data
RST	+	no data

Security technologies

Celeron 2955U and Atom Z2520 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
OS Guard	-	no data
Anti-Theft	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 2955U and Atom Z2520 are enumerated here.

AMD-V	+	-
VT-d	-	no data
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 2955U and Atom Z2520. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR2
Maximum memory size	16 GB	2 GB
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	8.5 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics for 4th Generation Intel Processors	SGX 544MP2
Clear Video	+	no data
Graphics max frequency	1 GHz	no data

Graphics interfaces

Available interfaces and connections of Celeron 2955U and Atom Z2520 integrated GPUs.

Number of displays supported	3	2
eDP	+	no data
DisplayPort	+	-
HDMI	+	-

Peripherals

Specifications and connection of peripherals supported by Celeron 2955U and Atom Z2520.

PCIe version	2.0	no data
PCI Express lanes	10	no data
PCI support	-	no data
USB revision	3.0	2.0 OTG, USB-SPH 2.0
Total number of SATA ports	2	no data
Integrated IDE	-	no data
Number of USB ports	4	2
Integrated LAN	-	no data
UART	+	3

Pros & cons summary

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Recency	1 September 2013	27 February 2013
Threads	2	4
Chip lithography	22 nm	32 nm
Power consumption (TDP)	15 Watt	3 Watt

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