Intel Xeon E5 2666 v3 vs Intel Xeon E5 2620

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Intel Xeon E5-2666 v3

Intel Xeon E5-2620

We compared two server CPUs: Intel Xeon E5 2666 v3 with 10 cores 2.9GHz and Intel Xeon E5 2620 with 6 cores 2GHz . 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

Released 2 years and 8 months late

Higher specification of memory (2133 vs 3)

Higher base frequency (2.9GHz vs 2GHz)

Larger L3 cache size (25MB vs 15MB)

More modern manufacturing process (22nm vs 32nm)

Intel Xeon E5 2620 's Advantages

Lower TDP (95W vs 135W)

Score

Benchmark

Geekbench 6 Single Core

Intel Xeon E5 2666 v3 +147%

1046

Intel Xeon E5 2620

422

Geekbench 6 Multi Core

Intel Xeon E5 2666 v3 +80%

6173

Intel Xeon E5 2620

3412

Intel Xeon E5 2666 v3

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Intel Xeon E5 2620

General Parameters

Nov 2014

Release Date

Mar 2012

Intel

Manufacturer

Intel

Server

Type

Server

Haswell-EP

Core Architecture

Sandy Bridge-EP

Intel Socket 2011-3

Socket

Intel Socket 2011

N/A

Integrated Graphics

N/A

Xeon E5 (Haswell-EP)

Generation

Xeon E5 (Sandy Bridge-EP)

Package

2.6 billions

Transistor Count

2.27 billions

22 nm

Manufacturing Process

32 nm

135 W

Power Consumption

95 W

Intel

Foundry

Intel

356 mm²

Die Size

435 mm²

CPU Performance

2.9 GHz

Performance Core Base Frequency

2 GHz

3.5 GHz

Performance Core Turbo Frequency

2.5 GHz

10

Total Core Count

6

20

Total Thread Count

12

100 MHz

Bus Frequency

100 MHz

29.0

Multiplier

20.0

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

256 K per core

25 MB shared

L3 Cache

15 MB shared

No

Unlocked Multiplier

No

2

SMP

2

Memory Parameters

DDR4-2133,DDR3-2133

Memory Types

DDR3

4

Max Memory Channels

4

Yes

ECC Memory Support

Yes

Miscellaneous

3

PCIe Version

3

40

PCIe Lanes

-

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