Intel Core i9 13900K vs i9 12900KS

We compared two desktop CPUs: the 3.0 GHz Intel Core i9 13900K with 24-cores against the 3.4 GHz i9 12900KS with 16-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 12900KS and 13900K
Advantages of Intel Core i9 13900K
  • Newer - released 6-months later
  • Has 8 more physical cores
  • Consumes up to 17% less energy than the Core i9 12900KS – 125 vs 150 Watt
  • Has 6 MB larger L3 cache size
  • Around 12.8 GB/s (17%) higher theoretical memory bandwidth
  • 11% faster in a single-core Geekbench v5 test - 2274 vs 2053 points
  • 4% higher Turbo Boost frequency (5.4 GHz vs 5.2 GHz)

Benchmarks

Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
39529
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
59400
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
24232
By purchasing through links on this site, we may receive a commission from Amazon. This does not affect our assessment methodology.

Specifications

Full technical specification of Intel Core i9 13900K and i9 12900KS

General

Vendor Intel Intel
Released September 27, 2022 April 4, 2022
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Raptor Lake-S Alder Lake-S
Model number i9-13900K i9-12900KS
Socket LGA-1700 LGA-1700
Integrated GPU UHD Graphics 770 UHD Graphics 770

Performance

Cores 24 16
Threads 32 24
Base Frequency 3.0 GHz 3.4 GHz
Turbo Boost Frequency 5.4 GHz 5.2 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 30x 34x
L1 Cache 80K (per core) 64K (per core)
L2 Cache 2MB (per core) 14MB (shared)
L3 Cache 36MB (shared) 30MB (shared)
Unlocked Multiplier Yes Yes

Power

Fabrication process 10 nm 10 nm
TDP 125 W 150 W
Max. temperature 100°C 100°C

iGPU

Integrated Graphics Intel UHD Graphics 770 Intel UHD Graphics 770
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 1650 MHz 1550 MHz
Shading Units 256 256
TMUs 16 16
ROPs 8 8
Execution Units 32 32
TGP 15 W 15 W
iGPU FLOPS
0.78 TFLOPS
0.78 TFLOPS

Memory support

Memory types DDR5-5600, DDR4-3200 DDR5-4800, DDR4-3200
Memory Size 128 GB 128 GB
Max. Memory Channels 2 2
Max. Memory Bandwidth 89.6 GB/s 76.8 GB/s
ECC Support Yes Yes

Misc

Official site Intel Core i9 13900K official page Intel Core i9 12900KS official page
PCI Express Version 5.0 5.0
PCI Express Lanes 20 20

Cast your vote

Choose between two processors
85 (65.9%)
44 (34.1%)
Total votes: 129

Comments

So which CPU will you choose: Intel Core i9 12900KS or i9 13900K?
Avatar
G. C 16 October 2022 02:04
I just bought myself a gaming rig that's multi-purposeful. CAD here and there and some graphic arts. I was lucky enough to purchase my PC in early May, when the new Alder Lake Ks came out. the i9-12900ks was the newest thing that had come out of intel's lab, I jumped right on. Now seeing they literally just came out with the next generation a couple months later I ask myself; did I purchase my pc too early. What is the significance between my killer KS 12900 compared to the next generation CPUs. This page's benchmarks showed me that the i9 12900ks is hand in hand with the new 13th gen, But it almost doubles in available cores and threads. Should I fear that my "top of the line" i9 KS is going to be outdated instantly. Was the i9-12900k a better purchase. Please give your insight on my situation. I love this CPU it literally does everything I need without hesitation. Paired with a measly RTX 3080.
+4 Reply
Avatar
D.R. 17 October 2022 15:51
Don’t worry, the KS is more than capable of handling anything you throw at it. Technology is always advancing and there’s always gonna be someone that is willing to spend more money just to say theirs is better. Yea, the new version has some cool features but it’s nothing that will make your rig obsolete anytime soon. Keep in mind there are plenty of people still playing games on 1080 graphics cards out there.
+6 Reply
Promotion