AMD Ryzen 9 3900XT vs AMD Ryzen 7 PRO 5645
We compared two desktop CPUs: AMD Ryzen 9 3900XT with 12 cores 3.8GHz and AMD Ryzen 7 PRO 5645 with 6 cores 3.7GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
AMD Ryzen 9 3900XT Advantages
Higher base frequency (3.8GHz vs 3.7GHz)
Larger L3 cache size (64MB vs 32MB)
AMD Ryzen 7 PRO 5645 Advantages
Released 1 years and 9 months late
Newer PCIe version (4 vs 4.0)
Lower TDP (65W vs 105W)
Score
Benchmark
Geekbench 6 Single Core
AMD Ryzen 9 3900XT
1763
AMD Ryzen 7 PRO 5645
+38%
2434
Geekbench 6 Multi Core
AMD Ryzen 9 3900XT
+2%
11025
AMD Ryzen 7 PRO 5645
10743
General Parameters
Jul 2020
Release Date
Apr 2022
AMD
Manufacturer
AMD
Desktop
Type
Desktop
x86-64
Instruction Set
-
Zen 2 (Matisse)
Core Architecture
Vermeer
AM4
Socket
AMD Socket AM4
No
Integrated Graphics
N/A
-
Generation
Ryzen 5 (Zen 3 (Vermeer))
Package
3.8 billions
Transistor Count
4.15 billions
7 nm
Manufacturing Process
7 nm
105 W
Power Consumption
65 W
95°C
Peak Operating Temperature
-
-
Foundry
TSMC
-
Die Size
74 mm²
-
I/O Process Size
12 nm
-
I/O Die Size
125 mm²
CPU Performance
12
Performance Cores
-
24
Performance Core Threads
-
3.8 GHz
Performance Core Base Frequency
3.7 GHz
4.7 GHz
Performance Core Turbo Frequency
4.6 GHz
12
Total Core Count
6
24
Total Thread Count
12
100 MHz
Bus Frequency
100 MHz
38x
Multiplier
37.0
64 K per core
L1 Cache
64 KB per core
512 K per core
L2 Cache
512 KB per core
64 MB shared
L3 Cache
32 MB shared
Yes
Unlocked Multiplier
No
-
SMP
1
Memory Parameters
DDR4-3200
Memory Types
DDR4-3200
128 GB
Max Memory Size
-
2
Max Memory Channels
2
47.68 GB/s
Max Memory Bandwidth
-
Yes
ECC Memory Support
Yes
