Home Comparison Intel Xeon E5 2666 v3 vs Intel Xeon E3 1275

Intel Xeon E5 2666 v3 vs Intel Xeon E3 1275

Intel Xeon E5 2666 v3
VS
Intel Xeon E3 1275
Intel Xeon E5 2666 v3 Intel Xeon E3 1275
We compared two server CPUs: Intel Xeon E5 2666 v3 with 10 cores 2.9GHz and Intel Xeon E3 1275 with 4 cores 3.4GHz . 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 3 years and 7 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Larger L3 cache size (25MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E3 1275 's Advantages
Higher base frequency (3.4GHz vs 2.9GHz)
Lower TDP (95W vs 135W)

Score

Benchmark

Geekbench 6 Single Core
Intel Xeon E5 2666 v3
1046
Intel Xeon E3 1275 +28%
1347
Geekbench 6 Multi Core
Intel Xeon E5 2666 v3 +36%
6173
Intel Xeon E3 1275
4527
Intel Xeon E5 2666 v3
VS
Intel Xeon E3 1275

General Parameters

Nov 2014
Release Date
Apr 2011
Intel
Manufacturer
Intel
Server
Type
Server
Haswell-EP
Core Architecture
Sandy Bridge
Intel Socket 2011-3
Socket
Intel Socket 1155
N/A
Integrated Graphics
Intel HD P3000
Xeon E5 (Haswell-EP)
Generation
Xeon E3 (Sandy Bridge)

Package

2.6 billions
Transistor Count
1.16 billions
22 nm
Manufacturing Process
32 nm
Intel Socket 2011-3
Socket
Intel Socket 1155
135 W
Power Consumption
95 W
Intel
Foundry
Intel
356 mm²
Die Size
216 mm²
FC-LGA12A
Package
FC-LGA10

CPU Performance

2.9 GHz
Performance Core Base Frequency
3.4 GHz
3.5 GHz
Performance Core Turbo Frequency
3.8 GHz
10
Total Core Count
4
20
Total Thread Count
8
100 MHz
Bus Frequency
100 MHz
29.0
Multiplier
34.0
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
8 MB shared
No
Unlocked Multiplier
No
2
SMP
1

Memory Parameters

DDR4-2133,DDR3-2133
Memory Types
DDR3
4
Max Memory Channels
2
Yes
ECC Memory Support
Yes

Miscellaneous

3
PCIe Version
3
40
PCIe Lanes
16

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