Product Compare
AMD Radeon 660M vs AMD Radeon R9 285X
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Jan 2022 | Unknown |
| Generation | Rembrandt | Volcanic Islands |
| Type | Integrated | Desktop |
| Bus Interface | PCIe 4.0 x8 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Base Clock | 1500 MHz | |
| Boost Clock | 1900 MHz | |
| Memory Clock | System Shared | 1375 MHz |
| Memory | ||
| Memory Size | System Shared | 3GB |
| Memory Type | System Shared | GDDR5 |
| Memory Bus | System Shared | 384bit |
| Bandwidth | System Dependent | 264.0GB/s |
| Render Config | ||
| Compute Units | 6 | 32 |
| Shading Units | 384 | 2048 |
| TMUs | 24 | 128 |
| ROPs | 16 | 32 |
| RT Cores | 6 | |
| L1 Cache | 128 KB per Array | 16 KB (per CU) |
| L2 Cache | 2 MB | 768 KB |
| Theoretical Performance | ||
| Pixel Rate | 30.40 GPixel/s | 32.06 GPixel/s |
| Texture Rate | 45.60 GTexel/s | 128.3 GTexel/s |
| FP16 (half) | 2.918 TFLOPS | |
| FP32 (float) | 1459 GFLOPS | 4.104 TFLOPS |
| FP64 (double) | 91.20 GFLOPS | |
| Graphics Processor | ||
| GPU Name | Rembrandt | Tonga |
| Architecture | RDNA 2.0 | GCN 3.0 |
| Foundry | TSMC | TSMC |
| Process Size | 6 nm | 28 nm |
| Transistors | 13.1 billion | 5 billion |
| Die Size | 210 mm² | 366 mm² |
| GPU Variant | Tonga XT(215-0851313) | |
| Board Design | ||
| TDP | 15W | 200W |
| Outputs | No outputs | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 |
| Power Connectors | None | 1x 6-pin + 1x 8-pin |
| Suggested PSU | 550 W | |
| Graphics Features | ||
| DirectX | 12 Ultimate (12_2) | 12 (12_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.0 |
| Vulkan | 1.2 | 1.2 |
| Shader Model | 6.5 | 6.3 |