Product Compare
AMD Radeon R9 M385X vs AMD Radeon R9 390X
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | May 2015 | Jun 2015 |
| Generation | Gem System | Pirate Islands |
| Type | Mobile | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Base Clock | 1000 MHz | |
| Boost Clock | 1100 MHz | |
| Memory Clock | 1200 MHz | 1500 MHz |
| Memory | ||
| Memory Size | 4GB | 8GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 128bit | 512bit |
| Bandwidth | 76.80GB/s | 384.0GB/s |
| Render Config | ||
| Compute Units | 14 | 44 |
| Shading Units | 896 | 2816 |
| TMUs | 56 | 176 |
| ROPs | 16 | 64 |
| L1 Cache | 16 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 256 KB | 1024 KB |
| Theoretical Performance | ||
| Pixel Rate | 17.60 GPixel/s | 67.20 GPixel/s |
| Texture Rate | 61.60 GTexel/s | 184.8 GTexel/s |
| FP32 (float) | 1.971 TFLOPS | 5.914 TFLOPS |
| FP64 (double) | 123.2 GFLOPS | 739.2 GFLOPS |
| Graphics Processor | ||
| GPU Name | Strato | Grenada |
| GPU Variant | Strato XT | Grenada XT(215-0880004) |
| Architecture | GCN 2.0 | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 2.08 billion | 6.2 billion |
| Die Size | 160 mm² | 438 mm² |
| Board Design | ||
| TDP | Unknown | 275W |
| Outputs | Portable Device Dependent | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 |
| Suggested PSU | 600 W | |
| Power Connectors | 1x 6-pin + 1x 8-pin | |
| Graphics Features | ||
| DirectX | 12 (12_0) | 12 (12_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 2.0 |
| Vulkan | 1.2.170 | 1.2 |
| Shader Model | 6.5 | 6.3 |