Intel Xeon E5 2658A v3 vs Intel Xeon E5 2666 v3

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Intel Xeon E5 2658A v3 Intel Xeon E5 2666 v3

We compared two server CPUs: Intel Xeon E5 2658A v3 with 12 cores 2.2GHz and Intel Xeon E5 2666 v3 with 10 cores 2.9GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Xeon E5 2658A v3 's Advantages

Larger L3 cache size (30MB vs 25MB)

Lower TDP (105W vs 135W)

Intel Xeon E5 2666 v3 's Advantages

Higher specification of memory (DDR4-2133 vs DDR4-2133)

Higher base frequency (2.9GHz vs 2.2GHz)

Score

Benchmark

Geekbench 6 Single Core

Intel Xeon E5 2658A v3

464

Intel Xeon E5 2666 v3 +125%

1046

Geekbench 6 Multi Core

Intel Xeon E5 2658A v3

289

Intel Xeon E5 2666 v3 +2035%

6173

Intel Xeon E5 2658A v3

VS

Intel Xeon E5 2666 v3

General Parameters

Jan 2015

Release Date

Nov 2014

Intel

Manufacturer

Intel

Server

Type

Server

Haswell-EP

Core Architecture

Haswell-EP

Intel Socket 2011-3

Socket

Intel Socket 2011-3

N/A

Integrated Graphics

N/A

Xeon E5 (Haswell-EP)

Generation

Xeon E5 (Haswell-EP)

Package

2.6 billions

Transistor Count

2.6 billions

22 nm

Manufacturing Process

22 nm

Intel Socket 2011-3

Socket

Intel Socket 2011-3

105 W

Power Consumption

135 W

Intel

Foundry

Intel

356 mm²

Die Size

356 mm²

FC-LGA12A

Package

FC-LGA12A

CPU Performance

2.2 GHz

Performance Core Base Frequency

2.9 GHz

Performance Core Turbo Frequency

3.5 GHz

12

Total Core Count

10

24

Total Thread Count

20

100 MHz

Bus Frequency

100 MHz

22.0

Multiplier

29.0

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

256 K per core

30 MB shared

L3 Cache

25 MB shared

No

Unlocked Multiplier

No

2

SMP

2

Memory Parameters

DDR4-2133

Memory Types

DDR4-2133,DDR3-2133

4

Max Memory Channels

4

Yes

ECC Memory Support

Yes

Miscellaneous

3

PCIe Version

3

40

PCIe Lanes

40

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