Home Comparison Intel Xeon E5640 vs Intel Xeon E3 1265L v2

Intel Xeon E5640 vs Intel Xeon E3 1265L v2

We compared two server CPUs: Intel Xeon E5640 with 4 cores 2.666GHz and Intel Xeon E3 1265L v2 with 4 cores 2.5GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Xeon E5640 's Advantages
Higher base frequency (2.666GHz vs 2.5GHz)
Larger L3 cache size (12MB vs 8MB)
Intel Xeon E3 1265L v2 's Advantages
Released 2 years and 2 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (45W vs 80W)

Score

Benchmark

Geekbench 6 Single Core
Intel Xeon E5640
437
Intel Xeon E3 1265L v2 +35%
593
Geekbench 6 Multi Core
Intel Xeon E5640 +11%
2456
Intel Xeon E3 1265L v2
2208
VS

General Parameters

Mar 2010
Release Date
May 2012
Intel
Manufacturer
Intel
Server
Type
Server
Westmere-EP
Core Architecture
Ivy Bridge
Intel Socket 1366
Socket
Intel Socket 1155
N/A
Integrated Graphics
Intel HD 2500
Xeon (Westmere-EP)
Generation
Xeon E3 (Ivy Bridge)

Package

1.17 billions
Transistor Count
1.4 billions
32 nm
Manufacturing Process
22 nm
80 W
Power Consumption
45 W
Intel
Foundry
Intel
239 mm²
Die Size
160 mm²

CPU Performance

2.666 GHz
Performance Core Base Frequency
2.5 GHz
2.933 GHz
Performance Core Turbo Frequency
3.5 GHz
4
Total Core Count
4
8
Total Thread Count
8
133 MHz
Bus Frequency
100 MHz
20.0
Multiplier
25.0
64 K per core
L1 Cache
64 K per core
256 K per core
L2 Cache
256 K per core
12 MB shared
L3 Cache
8 MB shared
No
Unlocked Multiplier
No
2
SMP
1

Memory Parameters

DDR3
Memory Types
DDR3
3
Max Memory Channels
2
Yes
ECC Memory Support
Yes

Miscellaneous

2
PCIe Version
3
-
PCIe Lanes
16

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