Intel Core i9 9900K vs i9 10900X

We compared two desktop CPUs: the 3.6 GHz Intel Core i9 9900K with 8-cores against the 3.7 GHz i9 10900X with 10-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 10900X and 9900K
Advantages of Intel Core i9 9900K
  • Consumes up to 42% less energy than the Core i9 10900X – 95 vs 165 Watt
  • Includes an integrated GPU Intel UHD Graphics 630
  • More than 6° C higher critical temperature
  • 11% higher Turbo Boost frequency (5 GHz vs 4.5 GHz)
Advantages of Intel Core i9 10900X
  • Supports up to 256 GB DDR4-2933 RAM
  • Supports quad-channel memory
  • Newer - released 1-year later
  • Has 2 more physical cores
  • Has 4 MB larger L3 cache size

Benchmarks

Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
1331
Cinebench R23 (Multi-Core)
14296
Passmark CPU (Single-Core)
2948
Passmark CPU (Multi-Core)
22544
Geekbench 5 (Single-Core)
1276
Geekbench 5 (Multi-Core)
10744
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Specifications

Full technical specification of Intel Core i9 9900K and i9 10900X

General

Vendor Intel Intel
Released October 8, 2018 October 7, 2019
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Coffee Lake Cascade Lake
Model number i9-9900K i9-10900X
Socket LGA-1151 LGA-2066
Integrated GPU UHD Graphics 630 No

Performance

Cores 8 10
Threads 16 20
Base Frequency 3.6 GHz 3.7 GHz
Turbo Boost Frequency 5 GHz 4.5 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 36x 37x
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) 20MB (shared)
Unlocked Multiplier Yes Yes

Power

Fabrication process 14 nm 14 nm
TDP 95 W 165 W
Max. temperature 100°C 94°C

iGPU

Integrated Graphics Intel UHD Graphics 630 -
GPU Base Clock 350 MHz -
GPU Boost Clock 1200 MHz -
Shading Units 192 -
TMUs 24 -
ROPs 3 -
Execution Units 24 -
TGP 15 W -
Max. Resolution 4096x2304 - 60 Hz -
iGPU FLOPS
0.38 TFLOPS

Memory support

Memory types DDR4-2666 DDR4-2933
Memory Size 128 GB 256 GB
Max. Memory Channels 2 4
Max. Memory Bandwidth 41.6 GB/s -
ECC Support No No

Misc

Official site Intel Core i9 9900K official page Intel Core i9 10900X official page
PCI Express Version 3.0 3.0
PCI Express Lanes 16 48
Extended instructions SSE4.1, SSE4.2, AVX-2 SSE4.1, SSE4.2, AVX-2, AVX-512

Cast your vote

Choose between two processors
12 (75%)
4 (25%)
Total votes: 16

Comments

So which CPU will you choose: Intel Core i9 10900X or i9 9900K?
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