Ultra 5 245KF vs Celeron B840

Primary details

Comparing Celeron B840 and Core Ultra 5 245KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2787	170
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	82.84
Market segment	Laptop	Desktop processor
Series	Intel Celeron	no data
Power efficiency	1.65	21.02
Architecture codename	Sandy Bridge (2011−2013)	Arrow Lake-S (2024−2025)
Release date	1 July 2011 (13 years ago)	24 October 2024 (less than a year ago)
Launch price (MSRP)	$86	$294

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Celeron B840 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	2	14
Base clock speed	1.9 GHz	4.2 GHz
Boost clock speed	1.9 GHz	5.2 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	no data
Multiplier	19	no data
L1 cache	64K (per core)	112 KB (per core)
L2 cache	256K (per core)	3 MB (per core)
L3 cache	2 MB (shared)	24 MB (shared)
Chip lithography	32 nm	3 nm
Die size	131 mm2	243 mm2
Maximum core temperature	100 °C	no data
Number of transistors	504 million	17,800 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Celeron B840 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	FCPGA988,PGA988	1851
Power consumption (TDP)	35 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron B840 and Core Ultra 5 245KF. You'll probably need this information if you require some particular technology.

AES-NI	-	+
FMA	+	-
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Demand Based Switching	-	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Celeron B840 and Core Ultra 5 245KF technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron B840 and Core Ultra 5 245KF are enumerated here.

VT-d	-	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron B840 and Core Ultra 5 245KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.335 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics for 2nd Generation Intel Processors	N/A
Graphics max frequency	1 GHz	no data

Graphics interfaces

Available interfaces and connections of Celeron B840 and Core Ultra 5 245KF integrated GPUs.

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

Peripherals

Specifications and connection of peripherals supported by Celeron B840 and Core Ultra 5 245KF.

PCIe version	2.0	5.0
PCI Express lanes	16	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	0.61	27.77
Recency	1 July 2011	24 October 2024
Physical cores	2	14
Threads	2	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 Celeron B840 and Core Ultra 5 245KF, ask them in Comments section, and we shall answer.

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