GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
Market Value Leader
Market comparison is currently pending while we verify the latest benchmarks for GeForce GTX 1660 and Radeon RX 580.
The GeForce GTX 1660 is dramatically faster than the Radeon RX 580, leading by roughly 67% in our performance index.
Maximum Capacity Reached. Remove a model to add another. (2/2)
GeForce GTX 1660 vs Radeon RX 580: In-Depth Breakdown
Performance: GeForce GTX 1660 vs Radeon RX 580
The GeForce GTX 1660 is dramatically faster, around 67% ahead of the Radeon RX 580. Both cards sit in the same broad class, well suited to entry-level 1080p.
Power & Efficiency
The GeForce GTX 1660 draws just 120W versus 185W for the Radeon RX 580, and it also delivers more performance per watt — so it runs cooler and quieter and needs less PSU headroom. Its more modern Turing architecture on a TSMC 12nm process is part of why it does more with each watt.
VRAM & Future-Proofing
With 8GB against 6GB, the Radeon RX 580 has more headroom for 4K textures and memory-hungry creative/AI tasks where the GeForce GTX 1660's 6GB can fall short.
Generation & Longevity
The GeForce GTX 1660 is roughly 2 years newer than the Radeon RX 580 (Turing vs GCN 4.0 (Polaris)), so it generally benefits from a more modern architecture and longer driver-support runway.
Features & Ecosystem
Beyond raw numbers, the GeForce GTX 1660 brings NVIDIA DLSS upscaling/frame generation and stronger ray tracing, while the Radeon RX 580 offers AMD FSR upscaling and strong rasterization value. If you lean on upscaling or ray tracing, that ecosystem difference can matter as much as the frame-rate gap.
Which should you buy: GeForce GTX 1660 or Radeon RX 580?
The GeForce GTX 1660 is the faster card by about 67%. With live pricing limited for this pair, base your decision on the spec differences above — particularly VRAM and power draw — and check current stock before buying.
Frequently Asked Questions
Is the GeForce GTX 1660 better than the Radeon RX 580?
Which is better for 4K gaming, the GeForce GTX 1660 or the Radeon RX 580?
Does the Radeon RX 580 have enough VRAM advantage to matter?
Technical Specifications Comparison
Architecture & Cores
| Specification | GeForce GTX 1660 | Radeon RX 580 |
|---|---|---|
| Architecture | Turing | GCN 4.0 (Polaris) |
| Process Node | TSMC 12nm | GloFo 14nm |
| CUDA Cores (CUDA Cores / Stream Processors) | 1,408 | 2,304✓ |
Clock Speeds
| Specification | GeForce GTX 1660 | Radeon RX 580 |
|---|---|---|
| Base Clock | 1,530 MHz✓ | 1,257 MHz |
| Boost Clock | 1,785 MHz✓ | 1,340 MHz |
Memory
| Specification | GeForce GTX 1660 | Radeon RX 580 |
|---|---|---|
| VRAM Capacity | 6 GB | 8 GB✓ |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 192-bit | 256-bit✓ |
| Memory Speed | 8 Gbps | 8 Gbps |
| Bandwidth | 192 GB/s | 256 GB/s✓ |
Connectivity & Power
| Specification | GeForce GTX 1660 | Radeon RX 580 |
|---|---|---|
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| TDP | 120 W✓ | 185 W |
| Power Connectors | 1x 8-pin | 1x 8-pin |
| Released | Mar 2019 | Apr 2017 |
