Celeron 4205U vs Atom Z520

Primary details

Comparing Atom Z520 and Celeron 4205U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	2523
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Atom	Intel Celeron
Architecture codename	Silverthorne (2008−2010)	Whiskey Lake-U (2018−2019)
Release date	2 April 2008 (16 years ago)	23 January 2019 (5 years ago)
Launch price (MSRP)	$65	$107

Detailed specifications

Atom Z520 and Celeron 4205U 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)	2 (Dual-core)
Threads	2	2
Base clock speed	1.33 GHz	1.8 GHz
Boost clock speed	0.03 GHz	1.8 GHz
Bus type	FSB	OPI
Bus rate	533.33 MT/s	4 GT/s
Multiplier	10	18
L1 cache	56 KB	128 KB
L2 cache	512 KB	512 KB
L3 cache	0 KB	2 MB
Chip lithography	45 nm	14 nm
Die size	24.18 mm2	no data
Maximum core temperature	90 °C	100 °C
Number of transistors	47 Million	no data
64 bit support	-	+
Windows 11 compatibility	-	+
VID voltage range	0.75-1.1V	no data

Compatibility

Information on Atom Z520 and Celeron 4205U 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	FCBGA1528
Power consumption (TDP)	2 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom Z520 and Celeron 4205U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3	Intel® SSE4.1, Intel® SSE4.2
AES-NI	-	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
My WiFi	no data	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	+	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	no data	+
Smart Response	no data	+
Demand Based Switching	+	no data
FSB parity	-	no data
Status	Discontinued	Discontinued

Security technologies

Atom Z520 and Celeron 4205U technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Secure Key	no data	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Atom Z520 and Celeron 4205U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom Z520 and Celeron 4205U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR3, DDR4
Maximum memory size	no data	64 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	38.397 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	-	Intel® UHD Graphics for 8th Generation Intel® Processors
Max video memory	-	32 GB
Quick Sync Video	-	+
Clear Video	-	+
Clear Video HD	-	+
Graphics max frequency	-	900 MHz

Graphics interfaces

Available interfaces and connections of Atom Z520 and Celeron 4205U integrated GPUs.

Number of displays supported	-	3
eDP	-	+
DisplayPort	-	+
HDMI	-	+
DVI	-	+

Graphics image quality

Maximum display resolutions supported by Atom Z520 and Celeron 4205U integrated GPUs, including resolutions over different interfaces.

4K resolution support	-	+
Max resolution over HDMI 1.4	-	4096x2304@24Hz
Max resolution over eDP	-	4096x2304@60Hz
Max resolution over DisplayPort	-	4096x2304@60Hz

Graphics API support

APIs supported by Atom Z520 and Celeron 4205U integrated GPUs, sometimes API versions are included.

DirectX	-	12
OpenGL	-	4.5

Peripherals

Specifications and connection of peripherals supported by Atom Z520 and Celeron 4205U.

PCIe version	no data	2.0
PCI Express lanes	no data	12

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Pros & cons summary

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Recency	2 April 2008	23 January 2019
Physical cores	1	2
Chip lithography	45 nm	14 nm
Power consumption (TDP)	2 Watt	15 Watt

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