AMD EPYC 7251 vs Intel Xeon E5649

VS

AMD EPYC 7251

Intel Xeon E5649

We compared two server CPUs: AMD EPYC 7251 with 8 cores 2.1GHz and Intel Xeon E5649 with 6 cores 2.533GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD EPYC 7251 's Advantages

Released 6 years and 4 months late

Higher specification of memory (2400 vs 3)

Newer PCIe version (3 vs 2)

Larger L3 cache size (32MB vs 12MB)

More modern manufacturing process (14nm vs 32nm)

Intel Xeon E5649 's Advantages

Higher base frequency (2.533GHz vs 2.1GHz)

Lower TDP (80W vs 120W)

Score

Benchmark

Geekbench 6 Single Core

AMD EPYC 7251 +90%

781

Intel Xeon E5649

411

Geekbench 6 Multi Core

AMD EPYC 7251 +111%

3651

Intel Xeon E5649

1727

AMD EPYC 7251

VS

Intel Xeon E5649

General Parameters

Jun 2017

Release Date

Feb 2011

AMD

Manufacturer

Intel

Server

Type

Server

Naples

Core Architecture

Westmere-EP

AMD Socket SP3

Socket

Intel Socket 1366

N/A

Integrated Graphics

N/A

EPYC (Zen (Naples))

Generation

Xeon (Westmere-EP)

Package

4.8 billions

Transistor Count

1.17 billions

14 nm

Manufacturing Process

32 nm

120 W

Power Consumption

80 W

81 °C

Peak Operating Temperature

-

GlobalFoundries

Foundry

Intel

213 mm²

Die Size

239 mm²

CPU Performance

2.1 GHz

Performance Core Base Frequency

2.533 GHz

2.9 GHz

Performance Core Turbo Frequency

2.8 GHz

8

Total Core Count

6

16

Total Thread Count

12

100 MHz

Bus Frequency

133 MHz

21.0

Multiplier

19.0

96 K per core

L1 Cache

64 K per core

512 K per core

L2 Cache

256 K per core

32 MB shared

L3 Cache

12 MB shared

Yes

Unlocked Multiplier

No

2

SMP

2

Memory Parameters

DDR4-2400

Memory Types

DDR3

8

Max Memory Channels

3

Yes

ECC Memory Support

Yes

Miscellaneous

3

PCIe Version

2

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