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Intel Core i5-10400 vs Intel Core Ultra 7 265

Last updated: 2026-07-05

Table of Contents

Summary
Benchmarks
Specifications
User Reviews
Popular Comparisons

Summary

The Intel Core i5-10400 (Comet Lake S) is a mainstream desktop processor. The Intel Core Ultra 7 265 (Arrow Lake) is a high-end processor for demanding applications.

The Intel Core i5-10400 (14 nm) has 6 cores, 12 threads, 12 MB L3 cache, PCIe 3.0, 43 GB/s memory bandwidth, and Intel UHD Graphics 630. The Intel Core Ultra 7 265 (3 nm) utilizes a hybrid architecture with more cores/threads, 36 MB L2, 33 MB L3 cache, PCIe 5.0, 102 GB/s memory bandwidth, and Intel Xe 4 Core Graphics 64 EUs (Arrow Lake).

The Intel Core i5-10400 offers solid everyday performance. The Intel Core Ultra 7 265 is significantly superior in single-core and multi-core performance. For gaming, the Intel Core i5-10400 is sufficient. The Intel Core Ultra 7 265 is better thanks to superior single-core performance and more advanced PCIe connectivity.

The Intel Core i5-10400 has a typical TDP. The Intel Core Ultra 7 265 benefits from the 3 nm process for improved energy efficiency at higher performance. As an older model, the Intel Core i5-10400 offers good value for money. The Intel Core Ultra 7 265 is a premium processor with a higher price, justified by top performance.

The Intel Core i5-10400 is suitable for cost-effective PCs (everyday tasks, casual gaming). The Intel Core Ultra 7 265 is the choice for demanding users (high-end gaming, professional applications).

Intel Core i5-10400

14 nm manufacturing process
6 cores, 12 threads
Good price-performance ratio
Solid performance for everyday tasks

Intel Core Ultra 7 265

3 nm manufacturing process
Hybrid architecture with high core/thread count
Superior single-core and multi-core performance
PCIe 5.0 support

Benchmarks

Performance Overview
Average performance across multiple benchmarks

Single-core performance

Rank 2 - 51 %

Intel Core i5-10400

Rank 1 - 100 %

Intel Core Ultra 7 265

Multi-core performance

Rank 2 - 29 %

Intel Core i5-10400

Rank 1 - 100 %

Intel Core Ultra 7 265

Cinebench 2024 Single-Core
Single-core performance

1,341 cb

20C / 20T · 5.10 GHz

4,830 cb

More benchmarks

Cinebench 2026 (ST)
218 entries

Cinebench 2026 (MC)
219 entries

Cinebench 2024 (SC)
427 entries

Cinebench 2024 (MC)
422 entries

Cinebench R23 (SC)
690 entries

Cinebench R23 (MC)
665 entries

Geekbench 6 (SC)
1,989 entries

Geekbench 6 (MC)
1,927 entries

Cinebench R20 (SC)
666 entries

Geekbench 5 (SC)
2,512 entries

Cinebench R20 (MC)
615 entries

Geekbench 5 (MC)
2,483 entries

FP32 SP (iGPU)
2,219 entries

3DMark Timespy (iGPU)
534 entries

Blender 3.1 Benchmark
213 entries

PassMark CPU-Mark
2,504 entries

CPU-Z Benchmark 17 (SC)
250 entries

CPU-Z Benchmark 17 (MC)
751 entries

Monero Hashrate
94 entries

V-Ray CPU-Render
251 entries

Cinebench R15 (SC)
1,113 entries

Cinebench R15 (MC)
1,110 entries

AI performance (NPU)
218 entries

Specifications

At a glance

Wischen	Intel Core i5-10400	Intel Core Ultra 7 265
Family	Intel Core i5 (336)	Intel Core Ultra 7 (31)
CPU group	Intel Core i 10000 (43)	Intel Core Ultra 200 AL-S (20)
Architecture	Comet Lake S	Arrow Lake
Technology	14 nm	3 nm
Segment	Desktop	Desktop
Socket	LGA 1200	LGA 1851
Predecessor	Intel Core i5-9400
Successor	Intel Core i5-11400

CPU Cores and Base Frequency

Wischen	Intel Core i5-10400	Intel Core Ultra 7 265
CPU Cores / Threads	6 / 12	20 / 20
Hyperthreading / SMT	✓	✗
Core architecture	normal	hybrid (big.LITTLE)
Core Cluster 1:	6x 2.90 - 4.30 GHz	8x Lion Cove 2.40 - 5.30 GHz
Core Cluster 2:		12x Skymont 1.80 - 4.60 GHz
L2-Cache		36.00 MB
L3-Cache	12.00 MB	33.00 MB
Overclocking	✗	✓

Integrated graphics (iGPU)

Wischen	Intel Core i5-10400	Intel Core Ultra 7 265
GPU name	Intel UHD Graphics 630	Intel Xe 4 Core Graphics 64 EUs (Arrow Lake)
GPU frequency	0.35 - 1.20 GHz	0.30 - 1.95 GHz
CUs / Shader	24 / 192	4 / 512
Raytracing	✗	✓
Max. displays	3	3
Max. GPU Memory	64 GB	32 GB
Technology	14 nm	5 nm
Release date	Q4/2017	Q3/2024

NPU AI performance

Wischen	Intel Core i5-10400	Intel Core Ultra 7 265
AI hardware		Intel® AI Boost
AI specifications		Intel AI Boost NPU 4 @ 13 TOPS
NPU + CPU + iGPU		37 TOPS

Memory & PCIe

Wischen	Intel Core i5-10400	Intel Core Ultra 7 265
Memory	DDR4-2666 (42.7 GB/s)	DDR5-6400 (102.4 GB/s)
Max. Memory	128 GB	256 GB
Memory channels	2	2
ECC	No	Yes
PCIe	3.0 x 16	5.0 x 20
PCIe Bandwidth	15.8 GB/s	78.8 GB/s

Thermal Management

Wischen	Intel Core i5-10400	Intel Core Ultra 7 265
TDP	65 W	65 W
TDP (PL2)		182 W
TDP up
TDP down
T. junction max.	100 °C	105 °C

Technical details

Wischen	Intel Core i5-10400	Intel Core Ultra 7 265
Chip design	Monolithic	Monolithic
AES-NI	✓	✓
Operating systems	Windows 10, Windows 11, Linux	Windows 11, Linux
Instruction set	x86-64 (64 bit)	x86-64 (64 bit)
ISA extensions	SSE4.1, SSE4.2, AVX2	SSE4.1, SSE4.2, AVX2
Release date	Q2/2020	Q1/2025
Release price	182 $	384 $
Documents		Technical data sheet

User Reviews

Your rating

Here you can rate one or both of the processors. The average rating of Intel Core i5-10400 is 3.9 stars (104 ratings), while Intel Core Ultra 7 265 has received 2.9 stars (113 ratings).

Click on the stars to rate one or both processors.

Intel Core i5-10400
6C / 12T · 2.90 - 4.30 GHz

★★★★★

Intel Core Ultra 7 265
20C / 20T · 2.40 - 5.30 GHz

★★★★★