Intel Xeon E5-2666 v3

Intel Xeon E5-2666 v3
Benchmarks & Specs

Last updated:
The Intel Xeon E5-2666 v3 is a processor based on the proven Haswell E architecture. It was designed for demanding tasks and provides a solid foundation. Its ten cores and twenty threads are particularly noteworthy. This configuration enables considerable parallel processing power. In addition, this processor has a generous 25 MB Level 3 Cache.

This supports fast access to frequently used data. A maximum memory bandwidth of 68 GB/s helps with data-intensive applications. It was manufactured using the 22 nm process. At the time, this represented an advanced production standard. The Intel Xeon E5-2666 v3 has proven itself in many server and workstation environments.

It continues to provide a reliable basis for specialized applications. We have found that it can still handle certain workloads well. Its robustness makes it an interesting choice. It remains relevant for users who value stable multithreading performance.
  • Ten cores and twenty threads
  • 25 MB Level 3 Cache
  • 68 GB/s maximum memory bandwidth

Performance Overview
Average performance across multiple benchmarks

Single-core performance
Rank 532 / 867
In segment Desktop
Multi-core performance
Rank 297 / 821
In segment Desktop
Geekbench 6 Single-Core

Geekbench 6 Single-Core
Single-core performance

Intel Core i5-8500T
6C / 6T · 3.50 GHz
1,167
Intel Xeon E3-1265L v3
4C / 8T · 3.70 GHz
1,166
Intel Xeon E5-2666 v3
10C / 20T · 3.50 GHz
1,165
Intel Xeon E5-2637 v4
4C / 8T · 3.70 GHz
1,164
Intel Xeon E3-1220 v3
4C / 4T · 3.50 GHz
1,162
Geekbench 6 Multi-Core

Geekbench 6 Multi-Core
Multi-core performance

Intel Core i7-9700K
8C / 8T · 4.60 GHz
7,361
AMD Ryzen 7 4700S
8C / 16T · 3.60 GHz
7,262
Intel Xeon E5-2666 v3
10C / 20T · 3.20 GHz
7,250
Intel Xeon E5-2695 v4
18C / 36T · 2.50 GHz
7,248
AMD Ryzen 5 3600XT
6C / 12T · 4.50 GHz
7,246
CPU-Z Benchmark 17 Single-Core

CPU-Z Benchmark 17 Single-Core
Single-core performance

Intel Xeon E5-2640 v3
8C / 16T · 3.40 GHz
348
Intel Xeon E5-2682 v4
16C / 32T · 3.00 GHz
348
Intel Xeon E5-2666 v3
10C / 20T · 3.50 GHz
345
AMD Athlon 3000G
2C / 4T · 3.50 GHz
343
Intel Core i5-4440
4C / 4T · 3.30 GHz
343
CPU-Z Benchmark 17 Multi-Core

CPU-Z Benchmark 17 Multi-Core
Multi-core performance

Intel Core i7-7820X
8C / 16T · 3.60 GHz
4,398
Intel Core i5-11600
6C / 12T · 2.80 GHz
4,383
Intel Xeon E5-2666 v3
10C / 20T · 2.90 GHz
4,332
Intel Xeon E5-1660 v3
8C / 16T · 3.00 GHz
4,301
Intel Xeon E5-2670 v3
12C / 24T · 2.30 GHz
4,281

More benchmarks

At a glance

PropertyValue
FamilyIntel Xeon E5 (76)
CPU groupIntel Xeon E5 v3 (34)
ArchitectureHaswell E
Technology22 nm
SegmentDesktop
SocketLGA 2011-3
Generation5
Predecessor
Successor

CPU Cores and Base Frequency

PropertyValue
CPU Cores / Threads10 / 20
Hyperthreading / SMT
Core architecturenormal
Cores: 10x
Frequency: 2.90 GHz
Turbo Frequency (1 Core): 3.50 GHz
Turbo Frequency (10 Cores): 3.20 GHz
L2-Cache2.56 MB
L3-Cache25.00 MB
OverclockingNo

Memory & PCIe

Memory typeMemory bandwidth
DDR4-2133
68.2 GB/s
PropertyValue
Max. Memory768 GB
Memory channels4
ECC
PCIe3.0 x 40
PCIe Bandwidth39.4 GB/s

Thermal Management

PropertyValue
TDP135 W
TDP (PL2)
TDP up
TDP down
T. junction max.

Technical details

PropertyValue
Chip designMonolithic
AES-NI
Operating systemsWindows 10, Linux
Instruction setx86-64 (64 bit)
ISA extensionsSSE4.1, SSE4.2, AVX2
Release dateQ4/2014
Release price
DocumentsTechnical data sheet
Intel Xeon E5-2666 v3
Intel Xeon E5-2666 v3
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