AMD Phenom II X4 840 + AMD RX 580
Complete bottleneck analysis across all resolutions and use cases.
Verdict (1440p Gaming)
Significant Bottleneck
Significant mismatch — your GPU is leaving meaningful CPU performance unused. Prioritise upgrading it.
57%
bottleneck
Bottleneck by Use Case
1080p Gaming
48%
Significant Bottleneck
1440p Gaming
57%
Significant Bottleneck
4K Gaming
70%
Severe Bottleneck
Streaming
35%
Moderate Bottleneck
Component Comparison
CPU
AMD Phenom II X4 840
GPU
AMD RX 580
Frequently Asked Questions
Does AMD Phenom II X4 840 bottleneck AMD RX 580?
At 1440p gaming, this combination shows a 57% bottleneck (Significant Bottleneck). Significant mismatch — your GPU is leaving meaningful CPU performance unused. Prioritise upgrading it.
What is the efficiency score for AMD Phenom II X4 840 + AMD RX 580?
The build efficiency score is 43/100. Below average — one component is significantly underutilized.
Should I upgrade my GPU?
Upgrade your GPU first. It is the limiting component in this configuration.
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