Product Compare
AMD Radeon R9 390X vs AMD Radeon RX 7400
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Jun 2015 | Aug 2025 |
| Generation | Pirate Islands | Navi III |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 4.0 x8 |
| Clock Speeds | ||
| Memory Clock | 1500 MHz | 2250 MHz |
| Base Clock | 1452 MHz | |
| Boost Clock | 2300 MHz | |
| Memory | ||
| Memory Size | 8GB | 8GB |
| Memory Type | GDDR5 | GDDR6 |
| Memory Bus | 512bit | 128bit |
| Bandwidth | 384.0GB/s | 288.0GB/s |
| Render Config | ||
| Compute Units | 44 | 28 |
| Shading Units | 2816 | 1792 |
| TMUs | 176 | 112 |
| ROPs | 64 | 64 |
| L1 Cache | 16 KB (per CU) | 128 KB per Array |
| L2 Cache | 1024 KB | 2 MB |
| RT Cores | 28 | |
| L3 Cache | 64 MB | |
| Theoretical Performance | ||
| Pixel Rate | 67.20 GPixel/s | 147.2 GPixel/s |
| Texture Rate | 184.8 GTexel/s | 257.6 GTexel/s |
| FP32 (float) | 5.914 TFLOPS | 16.49 TFLOPS |
| FP64 (double) | 739.2 GFLOPS | 515.2 GFLOPS |
| FP16 (half) | 32.97 TFLOPS | |
| Graphics Processor | ||
| GPU Name | Grenada | Navi 33 |
| GPU Variant | Grenada XT(215-0880004) | Navi 33 |
| Architecture | GCN 2.0 | RDNA 3.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 6 nm |
| Transistors | 6.2 billion | 13.3 billion |
| Die Size | 438 mm² | 204 mm² |
| Board Design | ||
| TDP | 275W | 43W |
| Suggested PSU | 600 W | 200 W |
| Outputs | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 | 1x HDMI 2.1a3x DisplayPort 2.1 |
| Power Connectors | 1x 6-pin + 1x 8-pin | 1x 6-pin |
| Graphics Features | ||
| DirectX | 12 (12_0) | 12 Ultimate (12_2) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.2 |
| Vulkan | 1.2 | 1.3 |
| Shader Model | 6.3 | 6.8 |