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 Radeon R9 390 and Radeon RX 580.
On raw speed the Radeon RX 580 comes out significantly faster — about 20% ahead of the Radeon R9 390. It also wins on performance-per-dollar, making it the cleaner choice when you can afford it.
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Radeon RX 580 vs Radeon R9 390: In-Depth Breakdown
Performance: Radeon RX 580 vs Radeon R9 390
The Radeon RX 580 is significantly faster, around 20% ahead of the Radeon R9 390. Both cards sit in the same broad class, well suited to entry-level 1080p.
Price & Value
The Radeon RX 580 currently lists from $23,454 JPY, $75,392 JPY less than the Radeon R9 390 at $98,846 JPY. Because it's both faster and competitively priced, the Radeon RX 580 wins on performance-per-dollar by about 406%. The Radeon RX 580 still sits about $23,225 JPY above its $229 JPY MSRP. The Radeon R9 390 still sits about $98,517 JPY above its $329 JPY MSRP.
Power & Efficiency
At 185W against 275W, the Radeon RX 580 is both the lower-power and the more efficient card, making it the easier build to cool and power. Its more modern GCN 4.0 (Polaris) architecture on a GloFo 14nm process is part of why it does more with each watt.
Memory & Bandwidth
The Radeon R9 390's memory is faster — 384 GB/s versus 256 GB/s (512-bit vs 256-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Generation & Longevity
The Radeon RX 580 is roughly 2 years newer than the Radeon R9 390 (GCN 4.0 (Polaris) vs GCN 2.0), so it generally benefits from a more modern architecture and longer driver-support runway.
Which should you buy: Radeon R9 390 or Radeon RX 580?
The Radeon RX 580 is the all-round winner here — it's faster and the better value, so buy it if it fits your budget. Only consider the Radeon R9 390 if you find it at a steep discount.
Frequently Asked Questions
Is the Radeon RX 580 better than the Radeon R9 390?
Which is better for 4K gaming, the Radeon R9 390 or the Radeon RX 580?
Is the Radeon R9 390 worth the extra $75,392 JPY over the Radeon RX 580?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon R9 390 | Radeon RX 580 |
|---|---|---|
| Architecture | GCN 2.0 | GCN 4.0 (Polaris) |
| Process Node | TSMC 28nm | GloFo 14nm |
| CUDA Cores (Stream Processors / Stream Processors) | 2,560✓ | 2,304 |
Clock Speeds
| Specification | Radeon R9 390 | Radeon RX 580 |
|---|---|---|
| Base Clock | 1,000 MHz | 1,257 MHz✓ |
| Boost Clock | 1,000 MHz | 1,340 MHz✓ |
Memory
| Specification | Radeon R9 390 | Radeon RX 580 |
|---|---|---|
| VRAM Capacity | 8 GB | 8 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 512-bit✓ | 256-bit |
| Memory Speed | 6 Gbps | 8 Gbps✓ |
| Bandwidth | 384 GB/s✓ | 256 GB/s |
Connectivity & Power
| Specification | Radeon R9 390 | Radeon RX 580 |
|---|---|---|
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| TDP | 275 W | 185 W✓ |
| Power Connectors | 1x 6-pin + 1x 8-pin | 1x 8-pin |
| Released | Jun 2015 | Apr 2017 |
