Bottleneck Calculator
Check CPU/GPU pairing balance by resolution and workload for your PC build.
What Is a PC Bottleneck?
A bottleneck occurs when one component in your PC limits the performance of another. For example, a powerful GPU paired with a weak CPU means the CPU can't feed data to the GPU fast enough, leaving the GPU underutilized. This imbalance reduces overall performance and means you're not getting the full value from your hardware investment. Understanding bottlenecks helps you make smarter upgrade decisions.
How Resolution Affects Bottlenecks
Resolution plays a crucial role in determining which component is the bottleneck. At 1080p, the CPU handles more of the workload because frame rates are higher and the processor must send draw calls faster. At 4K, the GPU bears the brunt of the work rendering millions more pixels per frame. This is why a mid-range CPU can pair well with a top-tier GPU at 4K, but would bottleneck the same GPU at 1080p.
How to Fix a Bottleneck
The most effective way to fix a bottleneck is to upgrade the weaker component. If your CPU is the bottleneck, consider upgrading to a faster processor with more cores and higher clock speeds. If your GPU is the bottleneck, a more powerful graphics card will improve performance. You can also adjust in-game settings — lowering CPU-intensive settings like draw distance and NPC count, or reducing GPU-intensive settings like resolution and ray tracing.