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Intel Core i9-9900KS vs Intel Atom C2550

Last updated: 2026-05-04

Table of Contents

Summary
Benchmarks
Specifications
User Reviews
Popular Comparisons

Summary

Benchmarks

Performance Overview
Average performance across multiple benchmarks

Single-core performance

Rank 1 - 100 %

Intel Core i9-9900KS

Rank 2 - 18 %

Intel Atom C2550

Multi-core performance

Rank 1 - 100 %

Intel Core i9-9900KS

Rank 2 - 11 %

Intel Atom C2550

Geekbench 5, 64bit Single-Core
Single-core performance

8C / 16T · 5.00 GHz

1,419

4C / 4T · 2.60 GHz

259

Geekbench 5, 64bit Multi-Core
Multi-core performance

8C / 16T · 4.80 GHz

9,471

4C / 4T · 2.60 GHz

971

More benchmarks

Cinebench 2026 (ST)
218 entries

Cinebench 2026 (MC)
219 entries

Cinebench 2024 (SC)
427 entries

Cinebench 2024 (MC)
422 entries

Cinebench R23 (SC)
690 entries

Cinebench R23 (MC)
665 entries

Geekbench 6 (SC)
1,989 entries

Geekbench 6 (MC)
1,927 entries

Cinebench R20 (SC)
666 entries

Geekbench 5 (SC)
2,512 entries

Cinebench R20 (MC)
615 entries

Geekbench 5 (MC)
2,483 entries

FP32 SP (iGPU)
2,219 entries

3DMark Timespy (iGPU)
534 entries

PassMark CPU-Mark
2,504 entries

Blender 2.81 (bmw27)
190 entries

CPU-Z Benchmark 17 (MC)
751 entries

Monero Hashrate
94 entries

V-Ray CPU-Render
251 entries

Cinebench R15 (SC)
1,113 entries

Cinebench R15 (MC)
1,110 entries

Geekbench 3 (SC)
945 entries

Geekbench 3 (MC)
941 entries

Cinebench R11.5 (SC)
826 entries

Specifications

At a glance

Wischen	Intel Core i9-9900KS	Intel Atom C2550
Family	Intel Core i9 (81)	Intel Atom (108)
CPU group	Intel Core i 9000 (34)	Intel Atom C2000 (7)
Architecture	Coffee Lake S Refresh	Avoton
Technology	14 nm	22 nm
Segment	Desktop	Desktop
Socket	LGA 1151-2	BGA 1283
Predecessor
Successor

CPU Cores and Base Frequency

Wischen	Intel Core i9-9900KS	Intel Atom C2550
CPU Cores / Threads	8 / 16	4 / 4
Hyperthreading / SMT	✓	✗
Core architecture	normal	normal
Cores:	8x	4x
Frequency:	4.00 GHz	2.40 GHz
Turbo (1 Core):	5.00 GHz	2.60 GHz
Turbo (All Cores):	4.80 GHz	2.60 GHz
L2-Cache
L3-Cache	16.00 MB	2.00 MB
Overclocking	✓	✗

Integrated graphics (iGPU)

Wischen	Intel Core i9-9900KS	Intel Atom C2550
GPU name	Intel UHD Graphics 630	no iGPU
GPU frequency	0.35 - 1.20 GHz
CUs / Shader	24 / 192	/
Raytracing	✗	✗
Max. displays	3
Max. GPU Memory	64 GB
Technology	14 nm
Release date	Q4/2017

NPU AI performance

Wischen	Intel Core i9-9900KS	Intel Atom C2550
AI hardware
AI specifications
NPU + CPU + iGPU

Memory & PCIe

Wischen	Intel Core i9-9900KS	Intel Atom C2550
Memory	DDR4-2666 (42.7 GB/s)	DDR3L-1600 (25.6 GB/s) DDR3-1600 (25.6 GB/s)
Max. Memory	128 GB	64 GB
Memory channels	2	2
ECC	No	Yes
PCIe	3.0 x 16	2.0 x 16
PCIe Bandwidth	15.8 GB/s	8.0 GB/s

Thermal Management

Wischen	Intel Core i9-9900KS	Intel Atom C2550
TDP	127 W	14 W
TDP (PL2)	159 W @ 28 s
TDP up
TDP down
T. junction max.	100 °C

Technical details

Wischen	Intel Core i9-9900KS	Intel Atom C2550
Chip design	Monolithic	Monolithic
AES-NI	✓	✓
Operating systems	Windows 10, Windows 11, Linux	Windows 10, Linux
Instruction set	x86-64 (64 bit)	x86-64 (64 bit)
ISA extensions	SSE4.1, SSE4.2, AVX2	SSE4.1, SSE4.2
Release date	Q4/2019	Q3/2013
Release price	524 $	74 $
Documents	Technical data sheet	Technical data sheet

User Reviews

Your rating

Here you can rate one or both of the processors. The average rating of Intel Core i9-9900KS is 4.8 stars (13 ratings), while Intel Atom C2550 has received 5.0 stars (2 ratings).

Click on the stars to rate one or both processors.

Intel Core i9-9900KS
8C / 16T · 4.00 - 5.00 GHz

★★★★★

Intel Atom C2550
4C / 4T · 2.40 - 2.60 GHz

★★★★★