Intel Xeon E3 1280 v2 vs Intel Xeon E5 2666 v3

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Intel Xeon E3-1280 v2

Intel Xeon E5-2666 v3

We compared two server CPUs: Intel Xeon E3 1280 v2 with 4 cores 3.6GHz 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 E3 1280 v2 's Advantages

Higher base frequency (3.6GHz vs 2.9GHz)

Lower TDP (69W vs 135W)

Intel Xeon E5 2666 v3 's Advantages

Released 2 years and 6 months late

Higher specification of memory (2133 vs 3)

Larger L3 cache size (25MB vs 8MB)

Score

Benchmark

Geekbench 6 Single Core

Intel Xeon E3 1280 v2

644

Intel Xeon E5 2666 v3 +62%

1046

Geekbench 6 Multi Core

Intel Xeon E3 1280 v2

2306

Intel Xeon E5 2666 v3 +167%

6173

Intel Xeon E3 1280 v2

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Intel Xeon E5 2666 v3

General Parameters

May 2012

Release Date

Nov 2014

Intel

Manufacturer

Intel

Server

Type

Server

Ivy Bridge

Core Architecture

Haswell-EP

Intel Socket 1155

Socket

Intel Socket 2011-3

N/A

Integrated Graphics

N/A

Xeon E3 (Ivy Bridge)

Generation

Xeon E5 (Haswell-EP)

Package

1.4 billions

Transistor Count

2.6 billions

22 nm

Manufacturing Process

22 nm

69 W

Power Consumption

135 W

Intel

Foundry

Intel

160 mm²

Die Size

356 mm²

CPU Performance

3.6 GHz

Performance Core Base Frequency

2.9 GHz

4 GHz

Performance Core Turbo Frequency

3.5 GHz

4

Total Core Count

10

8

Total Thread Count

20

100 MHz

Bus Frequency

100 MHz

36.0

Multiplier

29.0

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

256 K per core

8 MB shared

L3 Cache

25 MB shared

No

Unlocked Multiplier

No

1

SMP

2

Memory Parameters

DDR3

Memory Types

DDR4-2133,DDR3-2133

2

Max Memory Channels

4

Yes

ECC Memory Support

Yes

Miscellaneous

3

PCIe Version

3

16

PCIe Lanes

40

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