Best CPU for Kerbal Space Program (2026)
To get the most out of Kerbal Space Program, pair your graphics card with a CPU at or above its recommended processor. A too-slow CPU caps your frame rate no matter how strong the GPU is. Below are our picks by budget, chosen from real benchmark data.
Recommended processors by budget
| Tier | Our pick | Price |
|---|---|---|
| Budget | AMD Ryzen 5 2500X Meets the recommended spec · 4 cores · ~$59.00 |
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| Sweet spot | Intel Core i5-9600KF High-FPS headroom at 1080p/1440p · 6 cores · ~$89.00 |
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| High-end | Intel Core i3-14100F 1440p+, streaming & future-proofing · 4 cores · ~$109.00 |
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The CPU sets your frame-rate ceiling. For high-refresh (144Hz+) or 1080p competitive play, lean toward the sweet-spot or high-end pick; at 4K the GPU does most of the work and a budget-tier CPU is usually enough.
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Kerbal Space Program system requirements
| Component | Minimum | Recommended |
|---|---|---|
| CPU | Core 2 Duo 2.0 Ghz | Core i5 |
| GPU | DX10 (SM 4.0) capable, 512MB VRAM | DX10 (SM 4.0) capable, 1GB VRAM |
| RAM | 4 GB | 8 GB |
Building the whole rig? See the best GPU for Kerbal Space Program, check for a CPU/GPU bottleneck, or test your current PC with Can I Run It.
Frequently Asked Questions
What CPU do I need for Kerbal Space Program?
A AMD Ryzen 5 2500X-class processor meets the recommended bar. For high frame rates a Intel Core i5-9600KF gives more headroom. For 1440p+ gaming while streaming, a Intel Core i3-14100F or better is ideal. Verify any chip with our free Can I Run It checker.
Does the CPU matter for Kerbal Space Program, or just the GPU?
Gaming is GPU-bound, so the graphics card matters most for raw settings and resolution. But the CPU sets your frame-rate ceiling — it matters most at high refresh rates, at 1080p, and in CPU-heavy games (strategy, simulation, open-world). A weak CPU paired with a strong GPU causes a bottleneck.
Will my CPU bottleneck Kerbal Space Program?
It can, if your CPU is much weaker than your GPU. Check the exact balance of your build with our free bottleneck calculator before buying either component.