Intel Core i9 10900K vs i7 7800X

We compared two desktop CPUs: the 3.7 GHz Intel Core i9 10900K with 10-cores against the 3.5 GHz i7 7800X with 6-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 7800X and 10900K
Advantages of Intel Core i9 10900K
  • Has 12 MB larger L3 cache size
  • Newer - released 3-years later
  • Has 4 more physical cores
  • 32% higher Turbo Boost frequency (5.3 GHz vs 4 GHz)
  • 24% faster in a single-core Geekbench v5 test - 1336 vs 1075 points
  • Includes an integrated GPU Intel UHD Graphics 630
  • Consumes up to 11% less energy than the Core i7 7800X – 125 vs 140 Watt
Advantages of Intel Core i7 7800X
  • Supports quad-channel memory
  • Around 33.67 GB/s (74%) higher theoretical memory bandwidth


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 10900K and i7 7800X


Vendor Intel Intel
Released May 1, 2020 May 30, 2017
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Comet Lake Skylake
Model number i9-10900K i7-7800X
Socket LGA-1200 LGA-2066
Integrated GPU UHD Graphics 630 No


Cores 10 6
Threads 20 12
Base Frequency 3.7 GHz 3.5 GHz
Turbo Boost Frequency 5.3 GHz 4 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 37x 35x
Bus Bandwidth 8 GT/s 8 GT/s
L1 Cache 64K (per core) 64K (per core)
L2 Cache 256K (per core) 1MB (per core)
L3 Cache 20MB (shared) 8MB (shared)
Unlocked Multiplier Yes Yes


Fabrication process 14 nm 14 nm
TDP 125 W 140 W
Max. temperature 100°C 100°C


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 -

Memory support

Memory types DDR4-2933 DDR4-2400
Memory Size 128 GB 128 GB
Max. Memory Channels 2 4
Max. Memory Bandwidth 45.8 GB/s 79.47 GB/s
ECC Support No No


Official site Intel Core i9 10900K official page Intel Core i7 7800X official page
PCI Express Version 3.0 3.0
PCI Express Lanes 16 28
Extended instructions - SSE4.1, SSE4.2, AVX-2, AVX-512

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So which CPU will you choose: Intel Core i7 7800X or i9 10900K?