Intel Core i9 9900K vs AMD Ryzen 9 7900X

We compared two desktop CPUs: the 3.6 GHz Intel Core i9 9900K with 8-cores against the 4.7 GHz AMD Ryzen 9 7900X with 12-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.


General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
NanoReview Final Score
Generic CPU rating
The "iGPU" and "Power Efficiency" have a minor impact on the NanoReview Score when comparing desktop CPUs.

Key Differences

What are the key differences between 7900X and 9900K
Advantages of AMD Ryzen 9 7900X
  • Newer - released 4-years and 1-month later
  • Has 49152 KB larger L3 cache size
  • More modern manufacturing process – 5 versus 14 nanometers
  • Around 31.8 GB/s (76%) higher theoretical memory bandwidth
  • Newer PCI Express version – 5.0
  • Has 4 more physical cores
  • 12% higher Turbo Boost frequency (5.6 GHz vs 5 GHz)

Test in Benchmarks

Comparing the performance of CPUs across various tasks

Cinebench R23

Reputable cross-platform benchmark for high-performance processors
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
File compression - 1790 MB/sec
Clang compilation - 178.4 Klines/sec
HTML 5 Browser - 337.9 pages/sec
PDF Renderer - 472.1 Mpixels/sec
Text processing - 313.2 pages/sec
Background blur - 77.6 images/sec
Photo processing - 123.5 images/sec
Ray tracing - 39.3 Mpixels/sec
Sources: GeekBench [1]


Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 66.3 GOps/sec 171.8 GOps/sec
Floating point math 41.3 GOps/sec 105.1 GOps/sec
Find prime numbers 47M Primes/sec 382M Primes/sec
Random string sorting 37M Strings/sec 78.1M Strings/sec
Data encryption 6.7 GBytes/sec 37.7 GBytes/sec
Data compression 286 MBytes/sec 639.9 MBytes/sec
Physics 942 Frames/sec 3077 Frames/sec
Extended instructions 19B Matrices/sec 48B Matrices/sec
Sources: PassMark [3], [4]

Value for money

Enter the current prices of the CPUs and click "Calculate" to determine which one has a better value-to-performance ratio.


Full technical specification of Intel Core i9 9900K and AMD Ryzen 9 7900X


Vendor Intel AMD
Released October 8, 2018 September 29, 2022
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Coffee Lake Zen 4 (Raphael)
Model number i9-9900K -
Integrated GPU UHD Graphics 630 Radeon Graphics (Ryzen 7000)


Performance Cores
P-Cores 8 12
P-Threads 16 24
Base Frequency (P) 3.6 GHz 4.7 GHz
Turbo Boost Frequency (P) 5 GHz 5.6 GHz
Total Cores 8 12
Total Threads 16 24
Bus Frequency 100 MHz 100 MHz
Multiplier 36x 47x
Bus Bandwidth 8 GT/s -
L1 Cache 64K (per core) 64K (per core)
L2 Cache 256K (per core) 1MB (per core)
L3 Cache 16MB (shared) 64MB (shared)
Unlocked Multiplier Yes Yes


Transistors - 13.1 billions
Fabrication process 14 nm 5 nm
TDP (PL1) 95 W 170 W
Max. Boost TDP (PL2) - 230 W
Socket LGA-1151 AM5
Peak temperature 100°C 95°C


Integrated Graphics Intel UHD Graphics 630 Radeon Graphics (Ryzen 7000)
GPU Base Clock 350 MHz 1500 MHz
GPU Boost Clock 1200 MHz 2200 MHz
Shading Units 192 448
TMUs 24 8
ROPs 3 4
Execution Units 24 2
TGP 15 W 15 W
Max. Resolution 4096x2304 - 60 Hz -

Memory Support

Memory types - DDR4-2666 - DDR5-5200
Memory Size 128 GB 128 GB
Max. Memory Channels 2 2
Max. Memory Bandwidth 41.6 GB/s 73.4 GB/s
ECC Support No Yes


Official site Intel Core i9 9900K official page AMD Ryzen 9 7900X official page
PCI Express Version 3.0 5.0
PCI Express Lanes 16 28
Extended instructions SSE4.1, SSE4.2, AVX-2 -

Cast your vote

Choose between two processors
2 (8.7%)
21 (91.3%)
Total votes: 23


So which CPU will you choose: AMD Ryzen 9 7900X or Intel Core i9 9900K?