Intel Xeon E5 2666 v3 vs Xeon w7 2555X

VS

Intel Xeon E5-2666 v3

Intel Xeon w7-2555X

We compared two server CPUs: Intel Xeon E5 2666 v3 with 10 cores 2.9GHz and Xeon w7 2555X with 14 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Xeon E5 2666 v3 's Advantages

Lower TDP (135W vs 210W)

Xeon w7 2555X 's Advantages

Released 9 years and 9 months late

Higher specification of memory (4800 vs 2133)

Newer PCIe version (5 vs 3)

Higher base frequency (3.3GHz vs 2.9GHz)

Larger L3 cache size (33.75MB vs 25MB)

More modern manufacturing process (10nm vs 22nm)

Score

Intel Xeon E5 2666 v3

VS

Xeon w7 2555X

General Parameters

Nov 2014

Release Date

Aug 2024

Intel

Manufacturer

Intel

Server

Type

Server

Haswell-EP

Core Architecture

Sapphire Rapids

Intel Socket 2011-3

Socket

Intel Socket 4677

N/A

Integrated Graphics

N/A

Xeon E5 (Haswell-EP)

Generation

Xeon W (Sapphire Rapids)

Package

2.6 billions

Transistor Count

-

22 nm

Manufacturing Process

10 nm

135 W

Power Consumption

210 W

Intel

Foundry

Intel

356 mm²

Die Size

-

CPU Performance

2.9 GHz

Performance Core Base Frequency

3.3 GHz

3.5 GHz

Performance Core Turbo Frequency

4.8 GHz

10

Total Core Count

14

20

Total Thread Count

28

100 MHz

Bus Frequency

100 MHz

29.0

Multiplier

33.0

64 K per core

L1 Cache

80 KB per core

256 K per core

L2 Cache

2 MB per core

25 MB shared

L3 Cache

33.75 MB

No

Unlocked Multiplier

Yes

2

SMP

1

-

AVX-512 FMA Ports

2

Memory Parameters

DDR4-2133,DDR3-2133

Memory Types

DDR5-4800

-

Max Memory Size

2 TB

4

Max Memory Channels

4

Yes

ECC Memory Support

Yes

Miscellaneous

3

PCIe Version

5

40

PCIe Lanes

64

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