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.

Review

General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of electricity consumption
NanoReview Final Score
Generic CPU rating

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 48 MB larger L3 cache size
  • More modern manufacturing process – 5 versus 14 nanometers
  • Around 31.8 GB/s (76%) higher theoretical memory bandwidth
  • 78% faster in a single-core Geekbench v5 test - 2273 vs 1277 points
  • Newer PCI Express version – 5.0
  • Has 4 more physical cores
  • 12% higher Turbo Boost frequency (5.6 GHz vs 5 GHz)

Benchmarks

Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
2048
Cinebench R23 (Multi-Core)
28793
Passmark CPU (Single-Core)
4348
Passmark CPU (Multi-Core)
52485
Geekbench 5 (Single-Core)
2279
Geekbench 5 (Multi-Core)
20880
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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
Socket LGA-1151 AM5
TDP 95 W 170 W
Max. Boost TDP - 230 W
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 192 128
TMUs 24 8
ROPs 3 4
Execution Units 24 2
TGP 15 W 15 W
Max. Resolution 4096x2304 - 60 Hz -
iGPU FLOPS
0.38 TFLOPS
0.54 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
1 (6.7%)
14 (93.3%)
Total votes: 15

Comments

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