GTX 1660 Super vs RX 580 8GB
The GTX 1660 Super is about 17% faster than the RX 580 8GB at 4K and 18% faster at 1440p.
Quick verdict: the GTX 1660 Super is the faster card, but the RX 580 8GB is the safer long-term pick if you play at high resolutions with high textures and plan to keep the card for years.
GTX 1660 Super vs RX 580 8GB: Specs and Performance
| Spec | GeForce GTX 1660 Super | Radeon RX 580 8GB |
|---|---|---|
| 3DMark Time Spy (graphics) | 5,663 | 4,495 |
| Estimated FPS · 1080p | 57 | 48 |
| Estimated FPS · 1440p | 40 | 34 |
| Estimated FPS · 4K | 21 | 18 |
| Video memory | 6 GB | 8 GB |
| Board power | 125 W | 185 W |
| Launch price (MSRP) | $229 | $229 |
| PCI Express | 3.0 ×16 | 3.0 ×16 |
| Release year | 2019 | 2017 |
| Series | NVIDIA GTX 16 Series | AMD RX 500 Series (Polaris Refresh) |
Estimated FPS at 1080p, 1440p and 4K
1080p: the GTX 1660 Super leads by 19%. 1440p: the GTX 1660 Super leads by 18%. 4K: the GTX 1660 Super leads by 17%. These figures come from our performance model, calibrated against published benchmark averages. They are estimates for comparing the two cards, not results measured on your PC.
Estimated FPS in Popular Games at 1440p
| Game (settings) | GTX 1660 Super | RX 580 8GB |
|---|---|---|
| Cyberpunk 2077 (High, no ray tracing) | ~30 | ~25 |
| Fortnite (High, DirectX 12) | ~50 | ~45 |
| Call of Duty: Black Ops 6 (High) | ~45 | ~40 |
| Counter-Strike 2 (High) | ~95 | ~80 |
Per-game figures scale each card's modelled 1440p average by how demanding the game is relative to our test blend, rounded to the nearest 5 FPS. Counter-Strike 2 is usually limited by the processor well before these numbers.
Verdict: GTX 1660 Super or RX 580 8GB?
The GTX 1660 Super is clearly faster than the RX 580 8GB: about 19% at 1080p, 18% at 1440p and 17% at 4K in our model.
The RX 580 8GB carries 8GB of video memory against 6GB on the GTX 1660 Super. 6GB is already tight at 1440p with high textures in the newest games, so the extra memory is worth more than it looks on a spec sheet. That makes this a genuine trade-off: the faster card has the smaller buffer.
At launch the GTX 1660 Super was $229 and the RX 580 8GB $229, which works out to $5.7 and $6.7 per frame at 1440p. On those prices the GTX 1660 Super is the better value, but street prices move every week, so check before you buy. The RX 580 8GB is rated for 60W more board power, which means more heat, more fan noise and possibly a bigger power supply.
Beyond raw speed, the GTX 1660 Super brings no DLSS and no hardware ray tracing, while the RX 580 8GB offers no hardware ray tracing.
Bottom line: the GTX 1660 Super is the faster card, but the RX 580 8GB is the safer long-term pick if you play at high resolutions with high textures and plan to keep the card for years.
Pairing Either Card With a Processor
A faster graphics card only helps if the processor can keep up. Each card's own page lists the slowest CPU that will not hold it back at every resolution:
- GeForce GTX 1660 Super: best CPU pairing and bottleneck
- Radeon RX 580 8GB: best CPU pairing and bottleneck
- Check your own processor in the bottleneck calculator
Power supply: a common rule of thumb is the card's board power plus about 150W for the rest of a gaming PC, with 30% headroom. That points to roughly 400W for the GTX 1660 Super and 450W for the RX 580 8GB. Check the card maker's own recommendation too.
Related GPU Comparisons
- RTX 3050 8GB vs GTX 1660 Super Effectively tied
- GTX 1660 Super vs GTX 1070 GTX 1070 faster at 1440p
- RX 580 8GB vs GTX 1060 6GB RX 580 8GB faster at 1440p
- RTX 3050 8GB vs RTX 2060 RTX 2060 faster at 1440p
- RX 6600 vs RTX 3050 8GB RX 6600 faster at 1440p
- Compare any two graphics cardsThe full GPU vs GPU tool
GTX 1660 Super vs RX 580 8GB: Common Questions
Is the GTX 1660 Super better than the RX 580 8GB?
The GTX 1660 Super is the faster card, but the RX 580 8GB is the safer long-term pick if you play at high resolutions with high textures and plan to keep the card for years. The GTX 1660 Super is about 17% faster than the RX 580 8GB at 4K and 18% faster at 1440p.
Which is better for 1440p, the GTX 1660 Super or the RX 580 8GB?
The GeForce GTX 1660 Super, by about 18% (40 vs 34 FPS on high settings in our model).
Which is better for 4K, the GTX 1660 Super or the RX 580 8GB?
The GeForce GTX 1660 Super, by about 17% (21 vs 18 FPS on high settings in our model).
Does the GTX 1660 Super have more VRAM than the RX 580 8GB?
No. The GTX 1660 Super has 6GB, while the RX 580 8GB has 8GB.
Data last reviewed October 15, 2026. Launch prices are US MSRPs; board power is the reference design's rating. See the methodology for how every figure is produced.