AMD Radeon Pro Vega II Duo vs AMD Radeon R9 390 X2
Graphics Processor
| GPU model | Vega 20 | Grenada |
|---|---|---|
| GPU variant | Vega 20 XT | Grenada PRO (215-0880030) |
| Architecture | GCN 5.1 | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 7 nm | 28 nm |
| Number of transistors | 13,230 million | 6,200 million |
| Die size | 331 mm² | 438 mm² |
Graphics Card
| Release date | Unknown | Sep 3rd, 2015 |
|---|---|---|
| Generation | Radeon Pro Mac | Pirate Islands |
| Production | Active | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Launch price | — | 1,399 USD |
| Predecessor | — | Volcanic Islands |
| Successor | — | Arctic Islands |
Clocks
| Base clock | 1400 MHz | — |
|---|---|---|
| Boost clock | 1720 MHz | — |
| Memory clock | 1000 MHz 2 Gbps effective | 1350 MHz 5.4 Gbps effective |
| GPU clock | — | 1000 MHz |
Memory Configuration
| Memory size | 32 GB | 8 GB |
|---|---|---|
| Memory type | HBM2 | GDDR5 |
| Memory bus width | 4096 bit | 512 bit |
| Bandwidth | 1,024 GB/s | 345.6 GB/s |
Render Configuration
| Shading units | 4096 | 2560 |
|---|---|---|
| TMUs | 256 | 160 |
| ROPs | 64 | 64 |
| Compute units | 64 | 40 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 4 MB | 1024 KB |
Performance
| Pixel rate | 110.1 GPixel/s | 64.00 GPixel/s |
|---|---|---|
| Texture rate | 440.3 GTexel/s | 160.0 GTexel/s |
| FP16 (half) performance | 28.18 TFLOPS (2:1) | — |
| FP32 (float) performance | 14.09 TFLOPS | 5.120 TFLOPS |
| FP64 (double) performance | 880.6 GFLOPS (1:16) | 640.0 GFLOPS (1:8) |
Dimensions & Outputs
| Slot width | Quad-slot | Triple-slot |
|---|---|---|
| TDP | 475 W | 580 W |
| Suggested PSU | 850 W | 950 W |
| Outputs | 1x HDMI4x Thunderbolt | 2x DVI1x HDMI1x DisplayPort |
| Power connectors | None | 4x 8-pin |
| Board number | MW732ZM/A | C671 |
API Support & Features
| DirectX | 12 (12_1) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 2.0 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.4 | 6.3 |
