CPU Comparison

i

Intel

INTEL

Intel Core i7-1255U

CORE STATE Alder Lake-U

CORE SPECS 10 Cores / 12 Threads

CLOCK SPEED 1700 Base / 4.7 GHz Turbo

CACHE 12 MB (shared)

MAX TDP 15W

ARCHITECTURE Alder Lake

nm

PROCESS 10 nm

LAUNCH DATE 2022

VS

i

Intel

INTEL

Core Ultra 7 255HX

CORE STATE Arrow Lake-HX

CORE SPECS 20 Cores / 20 Threads

CLOCK SPEED 2.4 Base / 5.2 GHz Turbo

CACHE 30 MB (shared)

MAX TDP 55W

ARCHITECTURE Arrow Lake

nm

PROCESS 3 nm

LAUNCH DATE 2025

PERFORMANCE BENCHMARKS

cinebench_cinebench_r15_multicore

1,133

4,350

cinebench_cinebench_r15_singlecore

159

614

cinebench_cinebench_r20_multicore

4,722

18,128

cinebench_cinebench_r20_singlecore

666

2,559

cinebench_cinebench_r23_multicore

11,244

43,162

cinebench_cinebench_r23_singlecore

1,587

6,093

passmark_data_compression

147,320

548,248

passmark_data_encryption

9,262

41,662

passmark_extended_instructions

8,231

44,240

passmark_find_prime_numbers

40

422

passmark_floating_point_math

32,618

168,930

passmark_integer_math

48,498

132,810

passmark_multithread

13,234

50,739

passmark_physics

789

3,062

passmark_random_string_sorting

16,934

66,420

passmark_single_thread

3,192

4,645

passmark_singlethread

3,192

4,645

DETAILED SPECIFICATIONS

SPECIFICATION

i7-1255U

Ultra 7 255HX

Core Specs

Cores

10

20 +100.0%

Threads

12

20 +66.7%

Base Clock (GHz)

1,700

2.4 -99.9%

Boost Clock (GHz)

4.7

5.2 +10.6%

Frequency (GHz)

1,700

2.4 -99.9%

Turbo Clock (GHz)

4.7

5.2 +10.6%

Multiplier

17

24 +41.2%

SMP CPUs

1

1 0.0%

Cache

L1 Cache

80 KB (per core)

192 KB (per core)

L2 Cache

1.25 MB (per core)

3 MB (per core)

L3 Cache

12 MB (shared)

30 MB (shared)

Power

TDP (W)

15

55 +266.7%

PL1

15 W

55 W

PL2

55 W

160 W

Architecture

Architecture

Alder Lake

Arrow Lake

Codename

Alder Lake-U

Arrow Lake-HX

Generation

Core i7 (Alder Lake-U)

Ultra 7 (Arrow Lake-HX)

Process Size

10 nm

3 nm

Transistors

—

17,800 million

Die Size

—

243 mm²

Foundry

Intel

TSMC

Memory

Memory Support

DDR4, DDR5

DDR5

Memory Bus

Dual-channel

Dual-channel

Memory Bandwidth

—

102.4 GB/s

ECC Memory

No

No

DDR4 Speed

3200 MT/s

—

DDR5 Speed

4800 MT/s

—

Platform

Socket

Intel BGA 1744

Intel BGA 2114

Chipsets

—

WM880, HM870

PCIe

Gen 4, 20 Lanes(CPU only)

Gen 5, 20 Lanes(CPU only)

Intel Hybrid

Hybrid Cores

P-Cores: 2 E-Cores: 8

P-Cores: 8 E-Cores: 12

E-Core Frequency

1200 MHz up to 3.5 GHz

1800 MHz up to 4.5 GHz

AI/NPU

NPU

—

Yes / 13 TOPS

Graphics

Integrated Graphics

Iris Xe 96EU

Arc Xe-LPG Graphics 64EU

Other

Market

Mobile

Mobile

Production Status

Active

Active

Part Number

SRLFP

SRVFG

Package

FC-BGA16F

FC-BGA

Tj Max

100°C

105°C

View Core i7-1255U Details View Core Ultra 7 255HX Details