Ultra 5 245KF vs Atom Z520

Primary details

Comparing Atom Z520 and Core Ultra 5 245KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	3398	176
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	81.94
Market segment	Laptop	Desktop processor
Series	Intel Atom	no data
Power efficiency	3.77	20.74
Architecture codename	Silverthorne (2008−2010)	Arrow Lake-S (2024−2025)
Release date	2 April 2008 (16 years ago)	24 October 2024 (less than a year ago)
Launch price (MSRP)	$65	$294

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Atom Z520 and Core Ultra 5 245KF 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)	14 (Tetradeca-Core)
Threads	2	14
Base clock speed	1.33 GHz	4.2 GHz
Boost clock speed	0.03 GHz	5.2 GHz
Bus type	FSB	no data
Bus rate	533.33 MT/s	no data
Multiplier	10	no data
L1 cache	56 KB	112 KB (per core)
L2 cache	512 KB	3 MB (per core)
L3 cache	0 KB	24 MB (shared)
Chip lithography	45 nm	3 nm
Die size	24.18 mm2	243 mm2
Maximum core temperature	90 °C	no data
Number of transistors	47 Million	17,800 million
64 bit support	-	+
Windows 11 compatibility	-	no data
VID voltage range	0.75-1.1V	no data

Compatibility

Information on Atom Z520 and Core Ultra 5 245KF 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	1851
Power consumption (TDP)	2 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom Z520 and Core Ultra 5 245KF. 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	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	+	no data
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	+	no data
FSB parity	-	no data

Security technologies

Atom Z520 and Core Ultra 5 245KF 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 Z520 and Core Ultra 5 245KF are enumerated here.

VT-d	-	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom Z520 and Core Ultra 5 245KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

no data

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

-

N/A

Peripherals

Specifications and connection of peripherals supported by Atom Z520 and Core Ultra 5 245KF.

PCIe version	no data	5.0
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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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	0.08	27.54
Recency	2 April 2008	24 October 2024
Physical cores	1	14
Threads	2	14
Chip lithography	45 nm	3 nm
Power consumption (TDP)	2 Watt	125 Watt

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Should you still have questions on choice between Atom Z520 and Core Ultra 5 245KF, ask them in Comments section, and we shall answer.

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