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Intel Core i7-5775C vs Intel Core Ultra 7 255H

Last updated: 2026-07-05

Table of Contents

Summary
Benchmarks
Specifications
User Reviews
Popular Comparisons

Summary

Benchmarks

Performance Overview
Average performance across multiple benchmarks

Single-core performance

Rank 2 - 45 %

Intel Core i7-5775C

Rank 1 - 100 %

Intel Core Ultra 7 255H

Multi-core performance

Rank 2 - 28 %

Intel Core i7-5775C

Rank 1 - 100 %

Intel Core Ultra 7 255H

Geekbench 6 Single-Core
Single-core performance

4C / 8T · 3.70 GHz

1,230

16C / 16T · 5.10 GHz

2,761

Geekbench 6 Multi-Core
Multi-core performance

4C / 8T · 3.50 GHz

4,309

16C / 16T · 2.00 GHz

14,339

iGPU - FP32 Performance (Single-precision GFLOPS)

Intel Iris Pro Graphics 6200

883

Intel Arc 140T

5,458

More benchmarks

Cinebench 2026 (ST)
218 entries

Cinebench 2026 (MC)
219 entries

Cinebench 2024 (SC)
427 entries

Cinebench 2024 (MC)
422 entries

Cinebench R23 (MC)
665 entries

Geekbench 6 (SC)
1,989 entries

Geekbench 6 (MC)
1,927 entries

Geekbench 5 (SC)
2,512 entries

Geekbench 5 (MC)
2,483 entries

FP32 SP (iGPU)
2,219 entries

PassMark CPU-Mark
2,504 entries

CPU-Z Benchmark 17 (MC)
751 entries

Cinebench R15 (SC)
1,113 entries

Cinebench R15 (MC)
1,110 entries

Geekbench 3 (SC)
945 entries

Geekbench 3 (MC)
941 entries

Cinebench R11.5 (SC)
826 entries

Cinebench R11.5 (MC)
837 entries

Cinebench R11.5 iGPU
383 entries

Specifications

At a glance

Wischen	Intel Core i7-5775C	Intel Core Ultra 7 255H
Family	Intel Core i7 (300)	Intel Core Ultra 7 (31)
CPU group	Intel Core i 5000 (7)	Intel Core Ultra 200H (5)
Architecture	Broadwell S	Arrow Lake H
Technology	14 nm	3 nm
Segment	Desktop	Notebook
Socket	LGA 1150	BGA 2049
Predecessor		Intel Core Ultra 7 155H
Successor		Intel Core Ultra X7 358H

CPU Cores and Base Frequency

Wischen	Intel Core i7-5775C	Intel Core Ultra 7 255H
CPU Cores / Threads	4 / 8	16 / 16
Hyperthreading / SMT	✓	✗
Core architecture	normal	hybrid (big.LITTLE)
Core Cluster 1:	4x 3.30 - 3.70 GHz	6x Lion Cove 2.00 - 5.10 GHz
Core Cluster 2:		8x Skymont 1.50 - 4.40 GHz
Core Cluster 3:		2x Crestmont 0.70 - 2.50 GHz
L2-Cache		6.00 MB
L3-Cache	6.00 MB	24.00 MB
Overclocking	✓	✗

Integrated graphics (iGPU)

Wischen	Intel Core i7-5775C	Intel Core Ultra 7 255H
GPU name	Intel Iris Pro Graphics 6200	Intel Arc 140T
GPU frequency	0.30 - 1.15 GHz	0.60 - 2.25 GHz
CUs / Shader	48 / 384	64 / 1024
Raytracing	✗	✓
Max. displays	3	3
Max. GPU Memory	32 GB	32 GB
Technology	14 nm	5 nm
Release date	Q2/2015	Q1/2025

NPU AI performance

Wischen	Intel Core i7-5775C	Intel Core Ultra 7 255H
AI hardware		Intel® AI Boost
AI specifications		Intel AI Boost (OpenVINO, WindowsML, DirectML, ONNX RT)
NPU + CPU + iGPU		96 TOPS

Memory & PCIe

Wischen	Intel Core i7-5775C	Intel Core Ultra 7 255H
Memory	DDR3-1600 (25.6 GB/s)	LPDDR5X-8400 (134.4 GB/s) DDR5-6400 (102.4 GB/s)
Max. Memory	32 GB	128 GB
Memory channels	2	2
ECC	No	No
PCIe	3.0 x 16	5.0 x 28
PCIe Bandwidth	15.8 GB/s	110.3 GB/s

Thermal Management

Wischen	Intel Core i7-5775C	Intel Core Ultra 7 255H
TDP	65 W	28 W
TDP (PL2)		115 W
TDP up
TDP down		20 W
T. junction max.		110 °C

Technical details

Wischen	Intel Core i7-5775C	Intel Core Ultra 7 255H
Chip design	Monolithic	Chiplet
AES-NI	✓	✓
Operating systems	Windows 10, 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	Q2/2015	Q1/2025
Release price
Documents	Technical data sheet	Technical data sheet

User Reviews

Your rating

Here you can rate one or both of the processors. The average rating of Intel Core i7-5775C is 4.6 stars (14 ratings), while Intel Core Ultra 7 255H has received 3.6 stars (246 ratings).

Click on the stars to rate one or both processors.

Intel Core i7-5775C
4C / 8T · 3.30 - 3.70 GHz

★★★★★

Intel Core Ultra 7 255H
16C / 16T · 2.00 - 5.10 GHz

★★★★★