CPU Comparison

i

Intel

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

VS

i

Intel

INTEL

Xeon 6521P

CORE STATE Granite Rapids

CORE SPECS 24 Cores / 48 Threads

CLOCK SPEED 2.6 Base / 4.1 GHz Turbo

CACHE 144 MB (shared)

MAX TDP 225W

ARCHITECTURE Granite Rapids

nm

PROCESS 5 nm

LAUNCH DATE 2025

PERFORMANCE BENCHMARKS

cinebench_cinebench_r15_multicore

4,350

4,966

cinebench_cinebench_r15_singlecore

614

701

cinebench_cinebench_r20_multicore

18,128

20,695

cinebench_cinebench_r20_singlecore

2,559

2,921

cinebench_cinebench_r23_multicore

43,162

49,274

cinebench_cinebench_r23_singlecore

6,093

6,956

passmark_data_compression

548,248

840,355

passmark_data_encryption

41,662

47,452

passmark_extended_instructions

44,240

57,751

passmark_find_prime_numbers

422

437

passmark_floating_point_math

168,930

155,294

passmark_integer_math

132,810

214,076

passmark_multithread

50,739

57,970

passmark_physics

3,062

4,105

passmark_random_string_sorting

66,420

98,119

passmark_single_thread

4,645

2,829

passmark_singlethread

4,645

2,829

DETAILED SPECIFICATIONS

SPECIFICATION

Ultra 7 255HX

6521P

Core Specs

Cores

20

24 +20.0%

Threads

20

48 +140.0%

Base Clock (GHz)

2.4

2.6 +8.3%

Boost Clock (GHz)

5.2

4.1 -21.2%

Frequency (GHz)

2.4

2.6 +8.3%

Turbo Clock (GHz)

5.2

4.1 -21.2%

Multiplier

24

26 +8.3%

SMP CPUs

1

1 0.0%

Cache

L1 Cache

192 KB (per core)

112 KB (per core)

L2 Cache

3 MB (per core)

2 MB (per core)

L3 Cache

30 MB (shared)

144 MB (shared)

Power

TDP (W)

55

225 +309.1%

PL1

55 W

—

PL2

160 W

—

Architecture

Architecture

Arrow Lake

Granite Rapids

Codename

Arrow Lake-HX

Granite Rapids

Generation

Ultra 7 (Arrow Lake-HX)

Xeon 6 (Granite Rapids-SP)

Process Size

3 nm

5 nm

Transistors

17,800 million

—

Die Size

243 mm²

598 mm²

Foundry

TSMC

Intel

Memory

Memory Support

DDR5

DDR5

Memory Bus

Dual-channel

Eight-channel

Memory Bandwidth

102.4 GB/s

409.6 GB/s

ECC Memory

No

Yes

Platform

Socket

Intel BGA 2114

Intel Socket 4710

Chipsets

WM880, HM870

—

PCIe

Gen 5, 20 Lanes(CPU only)

Gen 5, 136 Lanes(CPU only)

Intel Hybrid

Hybrid Cores

P-Cores: 8 E-Cores: 12

—

E-Core Frequency

1800 MHz up to 4.5 GHz

—

AMD Multi-Die

IO Process Size

—

10 nm

Interconnect

CXL

—

Gen 2.0, 64 Lanes (Shared with PCI-E)

AI/NPU

NPU

Yes / 13 TOPS

—

Graphics

Integrated Graphics

Arc Xe-LPG Graphics 64EU

—

Other

Market

Mobile

Server/Workstation

Production Status

Active

Active

Launch Price

—

$1250

Part Number

SRVFG

SRVNS

Package

FC-BGA

FC-LGA18N

Tj Max

105°C

100°C

Bundled Cooler

—

None

View Core Ultra 7 255HX Details View Xeon 6521P Details