Product Compare
AMD Radeon R9 270X vs AMD Radeon R9 390 X2
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Oct 2013 | Sep 2015 |
| Generation | Volcanic Islands | Pirate Islands |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Base Clock | 1000 MHz | |
| Boost Clock | 1050 MHz | |
| Memory Clock | 1400 MHz | 1350 MHz |
| Memory | ||
| Memory Size | 2GB | 8GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 512bit |
| Bandwidth | 179.2GB/s | 345.6GB/s |
| Render Config | ||
| Compute Units | 20 | 40 |
| Shading Units | 1280 | 2560 |
| TMUs | 80 | 160 |
| ROPs | 32 | 64 |
| L1 Cache | 16 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 512 KB | 1024 KB |
| Theoretical Performance | ||
| Pixel Rate | 33.60 GPixel/s | 64.00 GPixel/s |
| Texture Rate | 84.00 GTexel/s | 160.0 GTexel/s |
| FP32 (float) | 2.688 TFLOPS | 5.120 TFLOPS |
| FP64 (double) | 168.0 GFLOPS | 640.0 GFLOPS |
| Graphics Processor | ||
| GPU Name | Curacao | Grenada |
| GPU Variant | Curacao XT(215-0848004) | Grenada PRO(215-0880030) |
| Architecture | GCN 1.0 | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 2.8 billion | 6.2 billion |
| Die Size | 212 mm² | 438 mm² |
| Board Design | ||
| TDP | 180W | 580W |
| Suggested PSU | 450 W | 950 W |
| Outputs | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 |
| Power Connectors | 2x 6-pin | 4x 8-pin |
| Graphics Features | ||
| DirectX | 12 (11_1) | 12 (12_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.2 | 1.2 |
| Shader Model | 5.1 | 6.3 |