Intel Xeon E5 2666 v3 vs EPYC 4345P
We compared two server CPUs: Intel Xeon E5 2666 v3 with 10 cores 2.9GHz and EPYC 4345P with 8 cores 3.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
EPYC 4345P 's Advantages
Released 10 years and 6 months late
Higher specification of memory (5600 vs 2133)
Newer PCIe version (5 vs 3)
Higher base frequency (3.8GHz vs 2.9GHz)
Larger L3 cache size (32MB vs 25MB)
More modern manufacturing process (4nm vs 22nm)
Lower TDP (65W vs 135W)
Score
General Parameters
Nov 2014
Release Date
May 2025
Intel
Manufacturer
AMD
Server
Type
Server
Haswell-EP
Core Architecture
Grado
Intel Socket 2011-3
Socket
AMD Socket AM5
N/A
Integrated Graphics
Radeon Graphics
Xeon E5 (Haswell-EP)
Generation
EPYC (Zen 5 (Grado))
Package
2.6 billions
Transistor Count
8.315 billions
22 nm
Manufacturing Process
4 nm
135 W
Power Consumption
65 W
-
Peak Operating Temperature
95°C
Intel
Foundry
TSMC
356 mm²
Die Size
70.6 mm²
-
I/O Process Size
6 nm
-
I/O Die Size
122 mm²
CPU Performance
2.9 GHz
Performance Core Base Frequency
3.8 GHz
3.5 GHz
Performance Core Turbo Frequency
5.5 GHz
10
Total Core Count
8
20
Total Thread Count
16
100 MHz
Bus Frequency
100 MHz
29.0
Multiplier
38.0
64 K per core
L1 Cache
80 KB per core
256 K per core
L2 Cache
1 MB per core
25 MB shared
L3 Cache
32 MB shared
No
Unlocked Multiplier
No
2
SMP
1
Memory Parameters
DDR4-2133,DDR3-2133
Memory Types
DDR5-5600
4
Max Memory Channels
2
Yes
ECC Memory Support
Yes
Miscellaneous
3
PCIe Version
5
40
PCIe Lanes
24
