You found a great GPU deal and a cheap CPU to pair with it — but will they actually work together, or will one sit idle while the other is maxed? A bottleneck is just the slowest part in a given workload, and the wrong pairing means you paid for performance you can't reach. The catch: "balanced" at 1080p can become "GPU-limited" at 4K with the exact same hardware.
Run the PC Bottleneck Estimator before you buy. Pick your CPU tier, GPU tier, and target resolution, and it returns a rough verdict — CPU-bound, GPU-bound, or well matched. It's a planning hint, not a benchmark, but it catches the obvious mismatches: a flagship GPU throttled by a budget CPU at high frame rates, or a powerful CPU wasted on an entry GPU.
Resolution flips the answer. At 1080p with high frame rates the CPU often caps you; at 4K with high detail the GPU almost always does. The estimator lets you test both targets so you don't over-spend on one part to fix a limit the other side creates. Match the pairing to how and where you actually play.
While you're there, the GPU VRAM Recommendation tool settles the other common "did I buy enough?" question: how much memory your games, video work, or local AI models really need. VRAM isn't speed, but running out forces texture drops and stutter. Check the pairing, check the memory, then commit with confidence.