Best Used-Market Value
Radeon RX 580X Polaris 20 | GDDR5 | 8 GB has the stronger tracked performance-per-dollar score at current used prices. Radeon RX 580X Polaris 20 | GDDR5 | 8 GB is about $12.04 cheaper.
PC Part ValueGPU price and value comparison
Head-to-head used GPU value
Radeon RX 580 vs Radeon RX 580X
Radeon RX 580X Polaris 20 | GDDR5 | 8 GB currently offers better used performance per dollar. Performance is effectively tied in the tracked relative score.
Prices updated Sep 30, 2026
Used price differenceRadeon RX 580X Polaris 20 | GDDR5 | 8 GB is 15.6% lower
Performance differenceEffectively tied
Value differenceRadeon RX 580X Polaris 20 | GDDR5 | 8 GB is 18.5% higher
Which GPU Should You Buy?
Current market, memory, and power differences that can change the better choice.
VRAM And Longevity
The two cards have the same tracked VRAM capacity, so memory size is unlikely to decide this comparison by itself.
Power And Upgrade Fit
Tracked board power is effectively tied or unavailable. Check the exact card model and recommended PSU before upgrading.
Price, Performance And Specification Comparison
Used price uses the latest median, then the 25th percentile or minimum as fallback.
| Metric | Radeon RX 580 Polaris 20 | GDDR5 | 8 GB | Radeon RX 580X Polaris 20 | GDDR5 | 8 GB |
|---|---|---|
| Current used price | $76.99 | $64.95 |
| Current new price | $99 | $83.76 |
| Relative performance | 5 | 5 |
| 3DMark Time Spy | 5,400 | - |
| Performance per used dollar | 0.064 | 0.075 |
| VRAM | 8 GB | 8 GB |
| Board power | 185 W | 185 W |
| Architecture | GCN 4.0 | GCN 4.0 |
| Release year | 2017 | 2018 |
| Qualified sales | 11 | 5 |
Full valuation
Radeon RX 580 Polaris 20 | GDDR5 | 8 GB
Open price history, fair value range, confidence, and complete specifications.
Full valuationRadeon RX 580X Polaris 20 | GDDR5 | 8 GB
Open price history, fair value range, confidence, and complete specifications.
Build-level estimatePC Value Calculator
Estimate what a complete gaming PC containing either card may be worth.