Intel Core i9 9980XE vs i9 9900X

We compared two desktop CPUs: the 3.0 GHz Intel Core i9 9980XE with 18-cores against the 3.5 GHz i9 9900X with 10-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
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 9900X and 9980XE
Advantages of Intel Core i9 9980XE
  • Has 8 more physical cores
  • Has 5 MB larger L3 cache size
Advantages of Intel Core i9 9900X
  • More than 8° C higher critical temperature


Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
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Full technical specification of Intel Core i9 9980XE and i9 9900X


Vendor Intel Intel
Released October 8, 2018 October 8, 2018
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Skylake Skylake
Model number i9-9980XE i9-9900X
Socket LGA-2066 LGA-2066
Integrated GPU No No


Cores 18 10
Threads 36 20
Base Frequency 3.0 GHz 3.5 GHz
Turbo Boost Frequency 4.4 GHz 4.4 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 30x 35x
Bus Bandwidth 8 GT/s 8 GT/s
L1 Cache 64K (per core) 64K (per core)
L2 Cache 1MB (per core) 1MB (per core)
L3 Cache 25MB (shared) 20MB (shared)
Unlocked Multiplier Yes Yes


Fabrication process 14 nm 14 nm
TDP 165 W 165 W
Max. temperature 84°C 92°C

Memory support

Memory types DDR4-2666 DDR4-2666
Memory Size 128 GB 128 GB
Max. Memory Channels 4 4
Max. Memory Bandwidth 79.47 GB/s -
ECC Support No No


Official site Intel Core i9 9980XE official page Intel Core i9 9900X official page
PCI Express Version 3.0 3.0
PCI Express Lanes 44 44
Extended instructions SSE4.1, SSE4.2, AVX-2, AVX-512 SSE4.1, SSE4.2, AVX-2, AVX-512

Cast your vote

Choose between two processors
5 (100%)
0 (0%)
Total votes: 5


So which CPU will you choose: Intel Core i9 9900X or i9 9980XE?