i5-1155G7 vs i5-8257U

Primary details

Comparing Core i5-8257U and Core i5-1155G7 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1266	1053
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i5	Tiger Lake
Power efficiency	29.72	21.46
Architecture codename	Coffee Lake-U (2018−2019)	Tiger Lake-UP3 (2020−2021)
Release date	10 July 2019 (5 years ago)	31 May 2021 (3 years ago)

Detailed specifications

Core i5-8257U and Core i5-1155G7 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)	4 (Quad-Core)
Threads	8	8
Base clock speed	1.4 GHz	2.5 GHz
Boost clock speed	3.9 GHz	4.5 GHz
Bus rate	4 GT/s	4 GT/s
L1 cache	256 KB	96K (per core)
L2 cache	1 MB	1.25 MB (per core)
L3 cache	6 MB	8 MB (shared)
Chip lithography	14 nm	10 nm SuperFin
Maximum core temperature	100 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
64 bit support	+	+
Windows 11 compatibility	+	+

Compatibility

Information on Core i5-8257U and Core i5-1155G7 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	FCBGA1528	FCBGA1449
Power consumption (TDP)	15 Watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-8257U and Core i5-1155G7. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
FMA	-	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
eDRAM	128 MB	no data
Speed Shift	+	+
My WiFi	+	no data
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Deep Learning Boost	-	+

Security technologies

Core i5-8257U and Core i5-1155G7 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-8257U and Core i5-1155G7 are enumerated here.

AMD-V	+	-
VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-8257U and Core i5-1155G7. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4
Maximum memory size	32 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	37.5 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel Iris Plus Graphics 645	Intel® Iris® Xe Graphics eligible
Max video memory	32 GB	no data
Quick Sync Video	+	+
Clear Video	+	no data
Clear Video HD	+	+
Graphics max frequency	1.05 GHz	1.35 GHz
Execution Units	no data	80
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-8257U and Core i5-1155G7 integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Core i5-8257U and Core i5-1155G7 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@30Hz	4096x2304@60Hz
Max resolution over eDP	4096x2304@60Hz	4096x2304@60Hz
Max resolution over DisplayPort	4096x2304@60Hz	7680x4320@60Hz

Graphics API support

APIs supported by Core i5-8257U and Core i5-1155G7 integrated GPUs, sometimes API versions are included.

DirectX	12	12.1
OpenGL	4.5	4.6

Peripherals

Specifications and connection of peripherals supported by Core i5-8257U and Core i5-1155G7.

PCIe version	3.0	4.0
PCI Express lanes	16	16

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	4.71	6.35
Recency	10 July 2019	31 May 2021
Chip lithography	14 nm	10 nm
Power consumption (TDP)	15 Watt	28 Watt

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Should you still have questions on choice between Core i5-8257U and Core i5-1155G7, ask them in Comments section, and we shall answer.

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