i7-1255U vs Pentium Silver J5040

Primary details

Comparing Pentium Silver J5040 and Core i7-1255U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1890	878
Place by popularity	not in top-100	37
Cost-effectiveness evaluation	3.97	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Alder Lake-M
Power efficiency	19.42	53.98
Architecture codename	Gemini Lake Refresh (2019)	Alder Lake-U (2022)
Release date	4 November 2019 (5 years ago)	23 February 2022 (2 years ago)
Launch price (MSRP)	$161	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium Silver J5040 and Core i7-1255U 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	4 (Quad-Core)	10 (Deca-Core)
Threads	4	12
Base clock speed	2 GHz	1.7 GHz
Boost clock speed	3.2 GHz	4.7 GHz
L1 cache	56 KB (per core)	80K (per core)
L2 cache	4 MB (shared)	1.25 MB (per core)
L3 cache	4 MB	12 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	93 mm2	no data
Maximum core temperature	105 °C	100 °C
64 bit support	+	+
Windows 11 compatibility	+	+

Compatibility

Information on Pentium Silver J5040 and Core i7-1255U 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	1
Socket	FCBGA1090	FCBGA1744
Power consumption (TDP)	10 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium Silver J5040 and Core i7-1255U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
FMA	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	-	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	+
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	+
Flex Memory Access	no data	+
Smart Response	-	no data
GPIO	+	no data
Turbo Boost Max 3.0	-	no data
Deep Learning Boost	-	+

Security technologies

Pentium Silver J5040 and Core i7-1255U technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	+	+
Secure Key	+	+
MPX	+	-
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	+
Anti-Theft	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium Silver J5040 and Core i7-1255U are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium Silver J5040 and Core i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4, DDR5
Maximum memory size	8 GB	64 GB
Max memory channels	2	2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 605	Intel® Iris® Xe Graphics eligible
Max video memory	8 GB	no data
Quick Sync Video	+	+
Graphics max frequency	800 MHz	1.25 GHz
Execution Units	18	96

Graphics interfaces

Available interfaces and connections of Pentium Silver J5040 and Core i7-1255U integrated GPUs.

Number of displays supported	3	4
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
MIPI-DSI	+	no data

Graphics image quality

Maximum display resolutions supported by Pentium Silver J5040 and Core i7-1255U integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2160@30Hz	4096 x 2304 @ 60Hz
Max resolution over eDP	4096x2160@60Hz	4096 x 2304 @ 120Hz
Max resolution over DisplayPort	4096x2160@60Hz	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Pentium Silver J5040 and Core i7-1255U integrated GPUs, sometimes API versions are included.

DirectX	12	12.1
OpenGL	4.4	4.6

Peripherals

Specifications and connection of peripherals supported by Pentium Silver J5040 and Core i7-1255U.

PCIe version	2.0	4.0
PCI Express lanes	6	20
USB revision	2.0/3.0	no data
Total number of SATA ports	2	no data
Max number of SATA 6 Gb/s Ports	2	no data
Number of USB ports	8	no data
Integrated LAN	-	no data
UART	+	no data

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	2.13	8.88
Recency	4 November 2019	23 February 2022
Physical cores	4	10
Threads	4	12
Power consumption (TDP)	10 Watt	15 Watt

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Should you still have questions on choice between Pentium Silver J5040 and Core i7-1255U, ask them in Comments section, and we shall answer.

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