Intel Xeon E5 2666 v3 vs AMD EPYC 7251
We compared two server CPUs: Intel Xeon E5 2666 v3 with 10 cores 2.9GHz and AMD EPYC 7251 with 8 cores 2.1GHz . 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
Higher base frequency (2.9GHz vs 2.1GHz)
AMD EPYC 7251 's Advantages
Released 2 years and 7 months late
Higher specification of memory (2400 vs 2133)
Larger L3 cache size (32MB vs 25MB)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (120W vs 135W)
Score
Benchmark
Geekbench 6 Single Core
Intel Xeon E5 2666 v3
+33%
1046
AMD EPYC 7251
781
Geekbench 6 Multi Core
Intel Xeon E5 2666 v3
+69%
6173
AMD EPYC 7251
3651
General Parameters
Nov 2014
Release Date
Jun 2017
Intel
Manufacturer
AMD
Server
Type
Server
Haswell-EP
Core Architecture
Naples
Intel Socket 2011-3
Socket
AMD Socket SP3
N/A
Integrated Graphics
N/A
Xeon E5 (Haswell-EP)
Generation
EPYC (Zen (Naples))
Package
2.6 billions
Transistor Count
4.8 billions
22 nm
Manufacturing Process
14 nm
135 W
Power Consumption
120 W
-
Peak Operating Temperature
81 °C
Intel
Foundry
GlobalFoundries
356 mm²
Die Size
213 mm²
CPU Performance
2.9 GHz
Performance Core Base Frequency
2.1 GHz
3.5 GHz
Performance Core Turbo Frequency
2.9 GHz
10
Total Core Count
8
20
Total Thread Count
16
100 MHz
Bus Frequency
100 MHz
29.0
Multiplier
21.0
64 K per core
L1 Cache
96 K per core
256 K per core
L2 Cache
512 K per core
25 MB shared
L3 Cache
32 MB shared
No
Unlocked Multiplier
Yes
2
SMP
2
Memory Parameters
DDR4-2133,DDR3-2133
Memory Types
DDR4-2400
4
Max Memory Channels
8
Yes
ECC Memory Support
Yes
Miscellaneous
3
PCIe Version
3
40
PCIe Lanes
-
