Intel Core i7 6900K vs AMD Ryzen 9 3900X
We compared two desktop CPUs: Intel Core i7 6900K with 8 cores 3.2GHz and AMD Ryzen 9 3900X with 12 cores 3.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i7 6900K Advantages
Larger memory bandwidth (76.8GB/s vs 47.68GB/s)
AMD Ryzen 9 3900X Advantages
Released 3 years and 2 months late
Higher specification of memory (3200 vs 2133)
Newer PCIe version (4.0 vs 3.0)
Higher base frequency (3.8GHz vs 3.2GHz)
Larger L3 cache size (64MB vs 20MB)
More modern manufacturing process (7nm vs 14nm)
Lower TDP (105W vs 140W)
Score
Benchmark
Cinebench R23 Single Core
Intel Core i7 6900K
1151
AMD Ryzen 9 3900X
+13%
1306
Cinebench R23 Multi Core
Intel Core i7 6900K
11326
AMD Ryzen 9 3900X
+62%
18454
Geekbench 6 Single Core
Intel Core i7 6900K
1286
AMD Ryzen 9 3900X
+43%
1842
Geekbench 6 Multi Core
Intel Core i7 6900K
7470
AMD Ryzen 9 3900X
+56%
11715
Geekbench 5 Single Core
Intel Core i7 6900K
961
AMD Ryzen 9 3900X
+37%
1319
Geekbench 5 Multi Core
Intel Core i7 6900K
7327
AMD Ryzen 9 3900X
+63%
11991
Passmark CPU Single Core
Intel Core i7 6900K
2310
AMD Ryzen 9 3900X
+16%
2683
Passmark CPU Multi Core
Intel Core i7 6900K
14258
AMD Ryzen 9 3900X
+128%
32531
General Parameters
May 2016
Release Date
Jul 2019
Intel
Manufacturer
AMD
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Broadwell E
Core Architecture
Zen 2
i7-6900K
Processor Number
-
LGA-2011-3
Socket
AM4
N/A
Integrated Graphics
N/A
Package
-
Transistor Count
3.8 billions
14 nm
Manufacturing Process
7 nm
140 W
Power Consumption
105 W
-
Peak Operating Temperature
95 °C
CPU Performance
8
Performance Cores
12
16
Performance Core Threads
24
3.2 GHz
Performance Core Base Frequency
3.8 GHz
3.7 GHz
Performance Core Turbo Frequency
4.6 GHz
8
Total Core Count
12
16
Total Thread Count
24
100 MHz
Bus Frequency
100 MHz
32x
Multiplier
38x
64 K per core
L1 Cache
64 K per core
256 K per core
L2 Cache
512 K per core
20 MB shared
L3 Cache
64 MB shared
No
Unlocked Multiplier
Yes
Memory Parameters
DDR4-2133
Memory Types
DDR4-3200
128 GB
Max Memory Size
128 GB
4
Max Memory Channels
2
76.8 GB/s
Max Memory Bandwidth
47.68 GB/s
No
ECC Memory Support
Yes
