Home > CPU Comparisons > Core i9 9900K or Ryzen 9 7900X: what's better?

Intel Core i9 9900K vs AMD Ryzen 9 7900X

Intel Core i9 9900K
VS
AMD Ryzen 9 7900X
Intel Core i9 9900K
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.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments

Review

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)
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Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core i9 9900K
vs
Ryzen 9 7900X

Cinebench R23

Reputable cross-platform benchmark for high-performance processors
Cinebench R23 (Single-Core)
Core i9 9900K
1352
Ryzen 9 7900X +50%
2033
Cinebench R23 (Multi-Core)
Core i9 9900K
12479
Ryzen 9 7900X +136%
29439
Submit your Cinebench result

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]

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Core i9 9900K
2942
Ryzen 9 7900X +46%
4307
Passmark CPU (Multi-Core)
Core i9 9900K
18427
Ryzen 9 7900X +183%
52222
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.
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Specifications

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

General

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)

CPU

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
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

Package

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

iGPU

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 -
iGPU FLOPS
Core i9 9900K
0.38 TFLOPS
Ryzen 9 7900X
1.43 TFLOPS

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

Misc

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

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Comments

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