Core i5-12400T vs Atom Z520

Primary details

Comparing Atom Z520 and Core i5-12400T processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	694
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Atom	no data
Architecture codename	Silverthorne (2008−2010)	Alder Lake-S (2022)
Release date	2 April 2008 (16 years ago)	January 2022 (2 years ago)
Launch price (MSRP)	$65	no data
Current price	$217 (3.3x MSRP)	$165

Detailed specifications

Atom Z520 and Core i5-12400T 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)	6 (Hexa-Core)
Threads	2	12
Base clock speed	1.33 GHz	1.8 GHz
Boost clock speed	0.03 GHz	4.2 GHz
Bus support	533.33 MT/s	no data
L1 cache	56 KB	80K (per core)
L2 cache	512 KB	1.25 MB (per core)
L3 cache	0 KB	18 MB (shared)
Chip lithography	45 nm	Intel 7 nm
Die size	24.18 mm27.8 mm × 3.1 mm	163 mm2
Maximum core temperature	90 °C	100 °C
Number of transistors	47 Million	no data
64 bit support	-	+
Windows 11 compatibility	-	+
Unlocked multiplier	No	No
VID voltage range	0.75-1.1V	no data

Compatibility

Information on Atom Z520 and Core i5-12400T 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
Socket	PBGA441	FCLGA1700
Power consumption (TDP)	2 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom Z520 and Core i5-12400T. 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, Intel® AVX2
AES-NI	no data	+
AVX	no data	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	+	+
TSX	no data	+
Idle States	+	+
Thermal Monitoring	+	+
Demand Based Switching	+	no data
Turbo Boost Max 3.0	no data	-
FSB parity	-	no data
Status	Discontinued	Launched

Security technologies

Atom Z520 and Core i5-12400T technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Atom Z520 and Core i5-12400T 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 Core i5-12400T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR5-4800, DDR4-3200
Maximum memory size	no data	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	76.8 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	-	Intel UHD Graphics 730
Quick Sync Video	-	+
Clear Video HD	-	+
Graphics max frequency	-	1.45 GHz
Execution Units	-	24

Graphics interfaces

Available interfaces and connections of Atom Z520 and Core i5-12400T integrated GPUs.

Number of displays supported

-

4

Graphics image quality

Maximum display resolutions supported by Atom Z520 and Core i5-12400T integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	-	4096 x 2160 @ 60Hz
Max resolution over eDP	-	5120 x 3200 @ 120Hz
Max resolution over DisplayPort	-	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Atom Z520 and Core i5-12400T integrated GPUs, sometimes API versions are included.

DirectX	-	12
OpenGL	-	4.5

Peripherals

Specifications and connection of peripherals supported by Atom Z520 and Core i5-12400T.

PCIe version	no data	5.0 and 4.0
PCI Express lanes	no data	20

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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Physical cores	1	6
Threads	2	12
Power consumption (TDP)	2 Watt	35 Watt

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Should you still have questions on choice between Atom Z520 and Core i5-12400T, ask them in Comments section, and we shall answer.

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