Ultra 7 256V vs Celeron U3405

Primary details

Comparing Celeron U3405 and Core Ultra 7 256V processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2971	618
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	no data
Power efficiency	2.26	69.93
Architecture codename	Westmere (2010−2011)	Lunar Lake (2024)
Release date	no data	24 September 2024 (less than a year ago)

Detailed specifications

Celeron U3405 and Core Ultra 7 256V 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)	8 (Octa-Core)
Threads	2	8
Base clock speed	1.06 GHz	2.2 GHz
Boost clock speed	0.07 GHz	4.8 GHz
Bus type	DMI 1.0	no data
Bus rate	1 × 2.5 GT/s	37 MHz
Multiplier	8	no data
L1 cache	128 KB	192 KB (per core)
L2 cache	512 KB	2.5 MB (per core)
L3 cache	2 MB	12 MB (shared)
Chip lithography	32 nm	3 nm
Die size	81 mm2	no data
Maximum core temperature	90 °C	100 °C
Number of transistors	382 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Celeron U3405 and Core Ultra 7 256V 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	BGA1288	FCBGA2833
Power consumption (TDP)	18 Watt	17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron U3405 and Core Ultra 7 256V. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	-	+
FMA	+	-
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	-
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	+
Flex Memory Access	+	no data
PAE	36 Bit	no data
Turbo Boost Max 3.0	no data	+
FDI	+	no data
Fast Memory Access	+	no data
Deep Learning Boost	-	+
Supported AI Software Frameworks	-	OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN

Security technologies

Celeron U3405 and Core Ultra 7 256V 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 Celeron U3405 and Core Ultra 7 256V are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron U3405 and Core Ultra 7 256V. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-800, DDR3-1066	DDR5
Maximum memory size	8 GB	16 GB
Max memory channels	2	2
Maximum memory bandwidth	17.051 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics for Previous Generation Intel Processors	Intel Arc Graphics 140V
Quick Sync Video	-	+
Clear Video	+	no data
Graphics max frequency	500 MHz	1.95 GHz

Graphics interfaces

Available interfaces and connections of Celeron U3405 and Core Ultra 7 256V integrated GPUs.

Number of displays supported

2

3

Graphics image quality

Maximum display resolutions supported by Celeron U3405 and Core Ultra 7 256V integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)
Max resolution over eDP	no data	3840x2400 @ 120Hz
Max resolution over DisplayPort	no data	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Celeron U3405 and Core Ultra 7 256V integrated GPUs, sometimes API versions are included.

DirectX	no data	12.2
OpenGL	no data	4.6

Peripherals

Specifications and connection of peripherals supported by Celeron U3405 and Core Ultra 7 256V.

PCIe version	2.0	5.0
PCI Express lanes	16	4
PCI support	no data	5.0 and 4.0

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	0.43	12.57
Integrated graphics card	0.77	13.29
Physical cores	2	8
Threads	2	8
Chip lithography	32 nm	3 nm
Power consumption (TDP)	18 Watt	17 Watt

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Should you still have questions on choice between Celeron U3405 and Core Ultra 7 256V, ask them in Comments section, and we shall answer.

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