Ultra 5 245KF vs i5-520E

Primary details

Comparing Core i5-520E and Core Ultra 5 245KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	169
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	78.67
Market segment	Laptop	Desktop processor
Series	Intel Core i5	no data
Power efficiency	no data	21.02
Architecture codename	Westmere (2010−2011)	Arrow Lake-S (2024−2025)
Release date	7 January 2010 (14 years ago)	24 October 2024 (less than a year ago)
Launch price (MSRP)	$210	$294

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-520E 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	2 (Dual-core)	14 (Tetradeca-Core)
Threads	4	14
Base clock speed	no data	4.2 GHz
Boost clock speed	2.4 GHz	5.2 GHz
Bus type	DMI 1.0	no data
Bus rate	1 × 2.5 GT/s	no data
Multiplier	18	no data
L1 cache	128 KB	112 KB (per core)
L2 cache	512 KB	3 MB (per core)
L3 cache	3 MB	24 MB (shared)
Chip lithography	32 nm	3 nm
Die size	81 mm2	243 mm2
Number of transistors	382 Million	17,800 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Core i5-520E 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	no data	1851
Power consumption (TDP)	35 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-520E and Core Ultra 5 245KF. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	+	-
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
TSX	-	+

Security technologies

Core i5-520E and Core Ultra 5 245KF technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-520E and Core Ultra 5 245KF are enumerated here.

VT-d	+	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-520E and Core Ultra 5 245KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-1066	DDR5
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	17.051 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Intel HD Graphics (Ironlake)

N/A

Peripherals

Specifications and connection of peripherals supported by Core i5-520E and Core Ultra 5 245KF.

PCIe version	2.0	5.0
PCI Express lanes	16	20

Pros & cons summary

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Recency	7 January 2010	24 October 2024
Physical cores	2	14
Threads	4	14
Chip lithography	32 nm	3 nm
Power consumption (TDP)	35 Watt	125 Watt

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Should you still have questions on choice between Core i5-520E and Core Ultra 5 245KF, ask them in Comments section, and we shall answer.

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