Intel Core i7-1265U vs Intel Core i7-8665U

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i7-1265U or Intel Core i7-1265U – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The Intel Core i7-1265U features 10 processor cores and has the capability to manage 12 threads concurrently.
It was released in Q1/2022 and belongs to the 12 generation of the Intel Core i7 series.
To use the Intel Core i7-1265U, you'll need a motherboard with a BGA 1744 socket.
The Intel Core i7-8665U features 4 processor cores and has the capability to manage 8 threads concurrently.
It was released in Q2/2019 and belongs to the 8 generation of the Intel Core i7 series.
To use the Intel Core i7-8665U, you'll need a motherboard with a BGA 1356 socket.
Intel Core i7 Family Intel Core i7
Mobile Segment Mobile
Intel Core i 1200P/1200U Group Intel Core i 8000U
12 Generation 8
Intel Core i7-1265U Name Intel Core i7-8665U
 
 

CPU Cores and Base Frequency

The Intel Core i7-1265U has 10 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the A-Core is 1.8 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
Processors with hybrid (big.LITTLE) architecture strike a balance between performance and power efficiency, making them ideal for mobile devices.
The Intel Core i7-8665U has 4 CPU cores and can calculate 8 threads in parallel.
The clock frequency of the Intel Core i7-8665U is 1.9 GHz
and turbo frequency for one core is 4.8 GHz.
hybrid (big.LITTLE) Core architecture normal
None None 2.8 GHz
10 CPU Cores 4
No Overclocking No
8x Gracemont Cores B None
None None 4.8 GHz
Yes Hyperthreading Yes
2x Golden Cove Cores A None
1.8 GHz A-Core Frequency None
1.3 GHz B-Core Frequency None
3.6 GHz B-Core Frequency Turbo None
None None 4x
None None 1.9 GHz
4.8 GHz A-Core Frequency Turbo None
12 Threads 8
 
 

Internal Graphics

The Intel Core i7-1265U has integrated graphics, called iGPU for short.
Specifically, the Intel Core i7-1265U uses the Intel Iris Xe Graphics 96 (Alder Lake), which has 768 texture shaders
and 96 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
The Intel Core i7-8665U has integrated graphics, called iGPU for short.
Specifically, the Intel Core i7-8665U uses the Intel UHD Graphics 620, which has 192 texture shaders
and 24 execution units.
12.1 Direct X 12
Q1/2022 Release date Q3/2016
13 Generation 9.5
32.0 GB Max. GPU Memory 16.0 GB
-- Max. displays --
96 Execution units 24
768 Shaders 192
1.25 GHz GPU (Turbo) 1.15 GHz
10 nm Technology 14 nm
0.35 GHz GPU frequency 0.3 GHz
Intel Iris Xe Graphics 96 (Alder Lake) GPU name Intel UHD Graphics 620
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
Decode VC-1 Decode
Decode / Encode h265 / HEVC (10 bit) Decode / Encode
Decode / Encode h265 / HEVC (8 bit) Decode / Encode
Decode / Encode VP9 Decode / Encode
Decode AV1 No
Decode / Encode AVC Decode / Encode
Decode / Encode JPEG Decode / Encode
Decode VP8 Decode / Encode
Decode / Encode h264 Decode / Encode
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 64.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 76.8 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
The processor supports a maximum memory capacity of 64.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 38.4 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
pci PCIe pci
Yes AES-NI Yes
DDR4-3200, LPDDR4X-4266, DDR5-4800, LPDDR5-5200 Memory type DDR4-2400
No ECC No
2 Memory channels 2
64.0 GB Max. Memory 64.0 GB
76.8 GB/s Bandwidth 38.4 GB/s
 
 

Thermal Management

The processor has a thermal design power (TDP) of 15 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
None TDP up 25 W
100 °C Tjunction max 100 °C
15 W TDP (PL1 / PBP) 15 W
None TDP down 10 W
55 W TDP (PL2) None
 
 

Technical details

The Intel Core i7-1265U is manufactured using a 10 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 12.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i7-8665U is manufactured using a 14 nm process.
In total, this processor boasts a generous 8.0 MB cache.
-- Release price 409 $
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
6.5 MB L2-Cache 0 bytes
Q1/2022 Release date Q2/2019
Alder Lake U Architecture Whiskey Lake U
BGA 1744 Socket BGA 1356
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11
Technical data sheet Documents Technical data sheet
-- Part Number --
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Monolithic Chip design Monolithic
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
10 nm Technology 14 nm
12.0 MB L3-Cache 8.0 MB