BottleneckPC
Free bottleneck calculator & PC-building tools for gamers
BottleneckPC is a free suite of PC-building tools. The core bottleneck checker tells you whether your CPU and GPU are holding each other back - as an honest range, not a fake-precise percentage - with estimated FPS at 1080p, 1440p, and 4K and upgrade picks at live prices. It also includes a PSU calculator, RAM advisor, case finder, monitor match, and full pre-built PC recommendations. No signup, no paywall.
Features
- CPU + GPU bottleneck checker with an honest range, not a fake single percentage
- Estimated FPS at 1080p, 1440p, and 4K, weighted by resolution and game type
- Concrete upgrade picks with live retail prices and cost-per-frame value
- PSU wattage calculator, RAM advisor, case finder, and GPU-to-monitor match
- Full pre-built gaming PC recommendations for any budget
- 300+ CPUs and 140+ GPUs back over a decade, prices synced daily
- Free, no signup, no paywall
Use Cases
- Check if a CPU and GPU you own or plan to buy are well-matched
- Decide whether to upgrade your CPU or GPU, and which gives better value
- Plan a balanced new build within a specific budget
- Size the right PSU wattage for your parts
- Find a monitor that matches your GPU's real frame rates
- Settle "will X bottleneck Y?" without digging through forum threads
Comments
I kept seeing the same question everywhere - "will my CPU bottleneck my GPU?" - and the answers were always either a sketchy calculator spitting out a fake exact percentage, or 40 forum replies arguing. So I built BottleneckPC to just give a straight answer: an honest bottleneck range, real FPS estimates at 1080p/1440p/4K, and the specific part worth upgrading with current prices. Then I added the rest of the stuff I wished existed in one spot - PSU calc, RAM advisor, case finder, full builds. All free, no signup. Would love feedback on what to add next.
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Comments
I kept seeing the same question everywhere - "will my CPU bottleneck my GPU?" - and the answers were always either a sketchy calculator spitting out a fake exact percentage, or 40 forum replies arguing. So I built BottleneckPC to just give a straight answer: an honest bottleneck range, real FPS estimates at 1080p/1440p/4K, and the specific part worth upgrading with current prices. Then I added the rest of the stuff I wished existed in one spot - PSU calc, RAM advisor, case finder, full builds. All free, no signup. Would love feedback on what to add next.
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