About

CheckBottleneck.com was built out of a frustration that every PC builder knows. You spend hours researching your next upgrade, only to find that the tools meant to help you are either too basic, outdated, or just flat-out wrong. We decided to build something better.

Our Story

It started when our team of PC enthusiasts got tired of watching friends make expensive hardware mistakes. One bought an RTX 4090 paired with a first-generation Ryzen 5 — and saw almost no gaming improvement. Another upgraded to a powerful GPU while running DDR4-2133 in single-channel mode, leaving 25% of their CPU performance on the table without realizing it.

These are not edge cases. They are the most common PC building mistakes in the world. And they keep happening because no free tool was giving people the full picture. Most bottleneck calculators compare two benchmark numbers and call it done. That tells you almost nothing about real-world performance.

So we built CheckBottleneck.com — a tool that analyzes your entire system, not just two components.

What Makes Us Different

The CheckBottleneck calculator evaluates six dimensions of your system simultaneously: your processor, your graphics card, your resolution, your RAM capacity, your RAM speed, and your storage type. Each dimension is weighted differently depending on your actual workload — because a gaming PC and a video editing workstation have completely different performance profiles.

A 4K gaming build needs a different balance than a 1080p competitive setup. A DaVinci Resolve workstation needs more RAM bandwidth than a gaming rig. Our workload profiles — Gaming, Gaming + Streaming, Video Editing, Programming, General Use, and Workstation/3D — reflect these real differences using weighting derived from actual benchmark data, not guesswork.

How Our Benchmark Data Works

Every CPU and GPU in our database carries a composite performance score calibrated against three industry-standard benchmarks: Cinebench R24 for CPU performance, PassMark 11 for overall system throughput, and 3DMark TimeSpy for GPU gaming performance. We do not use manufacturer-provided specifications or theoretical peak figures — only real benchmark results from real hardware.

When new hardware launches — including NVIDIA RTX 5000 Blackwell, AMD Radeon RX 9000 RDNA 4, Intel Arc Battlemage, AMD Ryzen 9000, and Intel Core Ultra 200 — we update our database within days of reliable benchmark data becoming available. You are always working with current numbers.

Who We Are

CheckBottleneck.com is run by a team of PC hardware enthusiasts and performance analysts with a combined three decades of experience building, benchmarking, and optimizing gaming rigs and workstations. We are not affiliated with Intel, AMD, NVIDIA, or any hardware manufacturer. Our analysis is fully independent and guided entirely by benchmark data — not commercial relationships or sponsorships.

Our Mission

Our mission is simple: give every PC builder, gamer, and creative professional the information they need to make smart hardware decisions — for free, without registration, and without compromise. Whether you are building your first gaming PC on a $600 budget or configuring a $10,000 professional 3D rendering workstation, CheckBottleneck gives you the same level of honest, data-driven analysis.

Good hardware decisions should not require a computer science degree or expensive benchmarking software. They should take 30 seconds and a reliable tool.

Our Commitment to Accuracy

Our bottleneck percentages are derived from real performance gaps between calibrated benchmark scores, adjusted for resolution multipliers and workload weighting. In real-world testing, our results typically land within 5 to 10 percent of what hardware monitoring tools like MSI Afterburner report during actual gameplay.

We always remind our users that results are estimates. Real-world performance is also shaped by game engine optimization, driver versions, system cooling, and overclocking — factors no online calculator can fully account for. We give you the best possible starting point. The real world adds its own variables.