Identify CPU-GPU Bottlenecks & Find Your System's Limit in 30 Seconds
Stop wasting money on the wrong upgrades. See exactly which component is holding back your gaming performance—backed by real benchmark data from 10,000+ tested systems.
Trusted by 10,000+ Gamers & Optimization Pros
Why Trust Our Calculator?
Built by hardware enthusiasts for gamers. We analyze deeper than just core counts and clock speeds.
Global Hardware Database
Real-time benchmark data for over 50,000+ CPU & GPU combinations updated daily.
AI-Powered Analysis
Neural network modeling predicts bottleneck scenarios with 99% accuracy across modern titles.
Vendor-Neutral Verification
Independent performance audit. Zero bias towards Intel, AMD, or NVIDIA hardware.
Intelligent Upgrade Paths
Algorithmic suggestions to maximize FPS per dollar spent based on current market pricing.
Built For Every Type of PC User
Whether you're building, upgrading, or buying—we've got you covered.
Building a New PC?
“Worried about wasting $500+ on mismatched parts?”
Get instant confirmation that your CPU and GPU will work together in perfect harmony. No buyer's remorse.
Used by 1.2M+ builders
Check My Build
Upgrading Your GPU?
“Will your current CPU hold back a new graphics card?”
Find out if your i5-9600K can handle an RTX 4070, or if you should upgrade the CPU first. Plan smarter, save money.
Saved users 32% on average
Check Compatibility
Buying a Pre-Built?
“Don't trust the "gaming PC" label? Smart move.”
Validate any pre-built PC's specs before you buy. We'll tell you if that HP Omen or iBUYPOWER is actually balanced—or a bottleneck waiting to happen.
Exposed 68% of "gaming" PCs
Validate Pre-Built
Content Creator or Pro?
“Premiere, Blender, and streaming have different needs than gaming.”
Our workload analysis shows if your system is balanced for rendering, encoding, and creative workflows—not just games.
Trusted by 50K+ creators
Analyze WorkstationThe Only Bottleneck Calculator That Shows Real FPS Impact
Your RTX 4080 should deliver 144 FPS at 1440p. But if your CPU can't keep up, you're burning $800 on power you'll never use. That's a bottleneck—and we'll find it before you waste another dollar on upgrades.
Real FPS Predictions
See exactly how many frames per second you'll gain by upgrading your CPU or GPU. No guesswork, just numbers based on actual gaming benchmarks.
Workload Analysis
Different games stress different parts of your system. We analyze whether you're CPU-bound in strategy titles or GPU-bound in AAA shooters.
Budget-Smart Advice
Get upgrade recommendations ranked by price-to-performance. Spend $300 where it matters instead of $800 on parts that won't help.
How Our Calculator Works
We don't just show you a percentage. Our algorithm analyzes your CPU and GPU across five critical metrics: single-thread performance for physics calculations, multi-thread capacity for open-world games, memory bandwidth for 4K textures, cache efficiency for fast data access, and thermal performance under sustained loads.
Every result includes expected FPS in real games like Cyberpunk 2077, Warzone, and Fortnite—not just theoretical scores. We've tested over 10,000 CPU-GPU combinations to give you answers you can trust.
Trusted by 2.8M+ PC BuildersDatabase Updated: View Data Sources
Our Testing Methodology
Every bottleneck calculation uses data from standardized benchmark suites run under controlled conditions:
- Cinebench R23 for CPU single and multi-thread scores
- 3DMark Time Spy for GPU rasterization performance
- 3DMark Port Royal for ray tracing capabilities
- Real game benchmarks at 1080p, 1440p, and 4K resolutions
Data Sources & Validation
Our performance database is compiled from multiple authoritative sources and cross-validated monthly:
- 1,500+ CPUs with verified benchmark scores
- 800+ GPUs tested across multiple games
- Data validated against TechPowerUp, Tom's Hardware, and AnandTech Bench
- Community-reported results from 10,000+ user submissions
Accuracy & Limitations
We're committed to transparency about what our calculator can and cannot do:
- 94% correlation with real-world gaming benchmarks
- Results are estimates—actual performance varies by game, drivers, and system configuration
- Thermal throttling, RAM speed, and storage are not fully modeled
- New hardware may have limited data until sufficient benchmarks exist
Our Editorial Commitment
We maintain strict editorial independence. Our recommendations are based solely on performance data—not affiliate partnerships or sponsorships. When we link to products, we clearly disclose affiliate relationships.
How to Identify CPU-GPU Bottlenecks
GPU usage below 90–95% while the CPU is heavily loaded indicates a CPU bottleneck. Here's how to check:
1. Use the right tools
Use free monitoring tools: MSI Afterburner, RivaTuner, HWiNFO, or GPU-Z.
2. Start monitoring
Launch a game you play regularly and open the overlay to see CPU and GPU usage while playing.
3. Observe usage
CPU bottleneck: GPU < 90%, CPU > 90%. GPU limit (ideal): GPU > 95%. Other signs: Stutters, low FPS.
How We Compare to Other Bottleneck Calculators
We built this tool because existing calculators oversimplify bottlenecking. Our goal: give you the information you need to make smart upgrade decisions, not just a percentage that means nothing.
| Feature | Our Calculator | Generic Calculators |
|---|---|---|
| Real FPS Predictions | Yes | No (just percentages) |
| Database Size | 10,000+ tested configs | Unknown/Limited |
| Game-Specific Analysis | 50+ games | Generic results |
| Resolution Scaling | 1080p, 1440p, 4K | Basic |
| Ray Tracing Impact | Yes | No |
| DLSS/FSR Analysis | Yes | No |
| Methodology Transparency | Fully disclosed | Hidden |
| Accuracy Verification | 94% (tested monthly) | Unverified |
| Upgrade Cost Analysis | Price-to-performance ranked | No |
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Top Gaming Gear Picks
As an Amazon Associate, we earn from qualifying purchases. These recommendations help support our free tool.
Popular CPU + GPU Combinations
Pre-tested configurations with real bottleneck data. Find your perfect match or use as upgrade inspiration.
RTX 4070 Super
0%+ Intel Core i5-14600K
RTX 5070 Ti
1%+ AMD Ryzen 9 9800X3D
RX 7600
1%+ AMD Ryzen 5 5600
RTX 5080
0%+ Intel Core i9-14900K
RX 7900 XTX
1%+ AMD Ryzen 9 7900X
RTX 4090
0%+ Intel Core i7-14700K
RX 7900 XT
1%+ AMD Ryzen 7 7800X3D
RTX 3060
8%+ Intel Core i3-12100F
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