AMD FX-6300vsAMD Radeon R9 390
Bottleneck at 4K
Gaming performance • Analyzed on June 19, 2026
AMD FX-6300
Processor
AMD Radeon R9 390
Graphics Card
Why This Bottleneck Occurs
At 4k resolution for gaming, the AMD FX-6300 creates a significant bottleneck (90%) when paired with the AMD Radeon R9 390. The CPU cannot feed data to the GPU fast enough, meaning the AMD Radeon R9 390 is not being fully utilized. While 4K reduces CPU dependency, the performance gap between these components still causes a noticeable imbalance.
Detailed Performance Analysis
This is a programmatic analysis of the AMD FX-6300 and AMD Radeon R9 390 at 4K. Based on our benchmark scores, At 4k resolution for gaming, the AMD FX-6300 creates a significant bottleneck (90%) when paired with the AMD Radeon R9 390. The CPU cannot feed data to the GPU fast enough, meaning the AMD Radeon R9 390 is not being fully utilized. While 4K reduces CPU dependency, the performance gap between these components still causes a noticeable imbalance.
Upgrade Suggestions
Consider upgrading the AMD FX-6300 to a higher-tier processor to better match the AMD Radeon R9 390.
Ensure your CPU is not thermally throttling — check cooling solution and temps.
Enabling XMP/EXPO for your RAM can help improve CPU-bound scenarios.