---
title: "Best PC for Cities: Skylines II (2026) | Hardware Guide | FixFix Labs"
description: "Cities: Skylines II is a simulation game — late-game performance is decided almost entirely by the CPU, because every citizen and vehicle is simulated each tick.…"
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1.  [PC Build Guides](/gaming-pc)
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3.  Cities: Skylines II

BUILD GUIDE · CPU bound 

# Best PC for Cities: Skylines II in 2026

Reviewed 12 August 2026 · FixFix Labs build desk

— The short answer

Cities: Skylines II is a simulation game — late-game performance is decided almost entirely by the CPU, because every citizen and vehicle is simulated each tick. A large city brings a GPU-heavy, CPU-light build to a crawl. Prioritise a fast multi-core CPU and 32GB RAM. A FixFixLabs build starts around £1,050.

FixFixLabs 

Cities: Skylines II

CPU bound 

Category

CPU bound

Indicative from

£1,050

Targets

03

Specs verified

August 2026

— Hardware priorities

## What actually matters for Cities: Skylines II

Simulation and strategy games are CPU-limited in the late game regardless of GPU tier, because AI and entity simulation runs every tick. As your city grows, the CPU decides your frame rate. A strong GPU with a weak CPU will still stutter in a big city. Spend on cores and clock speed and 32GB RAM.

1.  01 Late-game frame rate is CPU-limited no matter the GPU. 
2.  02 32GB RAM helps with large, detailed cities. 
3.  03 GPU tier barely changes late-game simulation speed. 
4.  04 One of the clearest cases where a CPU upgrade directly improves gameplay. 

— Spec sheets by target

## Recommended Cities: Skylines II builds by target

Cities: Skylines II recommended builds compared by performance target

Component

1080p · high settings from £1,050 

1440p · balanced from £1,250 

4K · max visuals from £1,700 

CPU 

Ryzen 7 7700 / Core i5-13600KF

Ryzen 7 7800X3D

Ryzen 7 9800X3D

GPU 

RTX 4060 / RX 7600

RTX 4060 Ti 16GB / RX 7700 XT

RTX 4070 Ti Super / RX 7900 XT

RAM 

32GB DDR5-6000

32GB DDR5-6000

32GB DDR5-6000

Storage 

1TB NVMe SSD

1TB NVMe SSD

2TB NVMe SSD

Note

Cores and clocks first — a modest GPU is entirely adequate here.

The X3D cache measurably steadies simulation tick rate in big cities.

4K raises GPU load, but your late-game ceiling is still the CPU.

### 1080p · high settings

from £1,050

CPU

Ryzen 7 7700 / Core i5-13600KF

GPU

RTX 4060 / RX 7600

RAM

32GB DDR5-6000

Storage

1TB NVMe SSD

Cores and clocks first — a modest GPU is entirely adequate here.

### 1440p · balanced

from £1,250

CPU

Ryzen 7 7800X3D

GPU

RTX 4060 Ti 16GB / RX 7700 XT

RAM

32GB DDR5-6000

Storage

1TB NVMe SSD

The X3D cache measurably steadies simulation tick rate in big cities.

### 4K · max visuals

from £1,700

CPU

Ryzen 7 9800X3D

GPU

RTX 4070 Ti Super / RX 7900 XT

RAM

32GB DDR5-6000

Storage

2TB NVMe SSD

4K raises GPU load, but your late-game ceiling is still the CPU.

These are FixFix Labs editorial targets, not publisher benchmarks or stocked products. Actual performance varies by game version, settings, drivers and component model. Prices are indicative for August 2026in the UK; your personalised quote confirms exact current parts and pricing.

— Sources and method

## Requirements checked against primary sources

Publisher or platform requirements establish the baseline. The target configurations above are our editorial recommendations for a balanced complete PC; they are not measured benchmark guarantees.

-   [Paradox Interactive Cities: Skylines II system requirements](https://www.paradoxinteractive.com/games/cities-skylines-ii/buy)

Last reviewed 12 August 2026 · FixFix Labs build desk

— Free build brief

## Get a Cities: Skylines II spec built for your budget

Tell us your budget and resolution and we'll return a named parts list with itemised UK pricing within 24 hours. Cities: Skylines II builds start from £1,050.

[Build this PC for me](/custom-builds?path=games&game=Cities%3A%20Skylines%20II)

— Build questions

## Cities: Skylines II PC — frequently asked questions

### Why does my Cities: Skylines II frame rate drop as my city grows?

Because the game simulates every citizen and vehicle each tick, and that work lands on the CPU. As the city grows the simulation cost grows with it, so frame rate falls regardless of how strong your graphics card is.

### Will a better graphics card fix late-game lag?

No. Late-game performance is CPU-limited, so a GPU upgrade barely moves the needle. A faster CPU — and 32GB of RAM — is the upgrade that actually helps.

### How much RAM do I need?

32GB. Large, detailed cities with mods and assets comfortably exceed what 16GB can hold, and once you spill over you get stutter on top of the simulation load.

### Can you build a Cities: Skylines II PC in the UK?

Yes. FixFixLabs builds, tests and warranties custom simulation machines in the UK. Tell us your budget and city size ambitions and we'll return an itemised parts list within 24 hours.

## Build guides for other games

[All build guides](/gaming-pc)

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