AMD Radeon HD 7970 vs AMD Radeon Pro Vega 20
Graphics Processor
| GPU model | Tahiti | Vega 12 |
|---|---|---|
| GPU variant | Tahiti XT (215-0821060) | Vega 12 XTA |
| Architecture | GCN 1.0 | GCN 5.0 |
| Foundry | TSMC | GlobalFoundries |
| Manufacturing process | 28 nm | 14 nm |
| Number of transistors | 4,313 million | unknown |
| Die size | 352 mm² | unknown |
Graphics Card
| Release date | Dec 22nd, 2011 | — |
|---|---|---|
| Generation | Southern Islands | — |
| Production | End-of-life | — |
| Launch price | 549 USD | — |
| Interface | PCIe 3.0 x16 | — |
| Reviews | 191 in our database | — |
| gpu.details.availability | Jan 9th, 2012 | — |
| Predecessor | Northern Islands | — |
| Successor | Sea Islands | — |
Clocks
| GPU clock | 925 MHz | — |
|---|---|---|
| Memory clock | 1375 MHz 5.5 Gbps effective | 740 MHz 1480 Mbps effective |
| Base clock | — | 815 MHz |
| Boost clock | — | 1283 MHz |
Memory Configuration
| Memory size | 3 GB | 4 GB |
|---|---|---|
| Memory type | GDDR5 | HBM2 |
| Memory bus width | 384 bit | 1024 bit |
| Bandwidth | 264.0 GB/s | 189.4 GB/s |
Render Configuration
| Shading units | 2048 | 1280 |
|---|---|---|
| TMUs | 128 | 80 |
| ROPs | 32 | 32 |
| Compute units | 32 | 20 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 768 KB | 1024 KB |
Performance
| Pixel rate | 29.60 GPixel/s | 41.06 GPixel/s |
|---|---|---|
| Texture rate | 118.4 GTexel/s | 102.6 GTexel/s |
| FP32 (float) performance | 3.789 TFLOPS | 3.284 TFLOPS |
| FP64 (double) performance | 947.2 GFLOPS (1:4) | 205.3 GFLOPS (1:16) |
| FP16 (half) performance | — | 6.569 TFLOPS (2:1) |
Dimensions & Outputs
| Slot width | Dual-slot | IGP |
|---|---|---|
| Length | 275 mm 10.8 inches | — |
| Width | 111 mm 4.4 inches | — |
| Height | 38 mm 1.5 inches | — |
| TDP | 250 W | 100 W |
| Suggested PSU | 600 W | — |
| Outputs | 1x DVI1x HDMI2x mini-DisplayPort | No outputs |
| Power connectors | 1x 6-pin + 1x 8-pin | — |
| Board number | C386-37 | — |
API Support & Features
| DirectX | 12 (11_1) | 12 (12_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 5.1 | 6.3 |
Other Features
Mobile graphics
| Release date | — | Nov 14th, 2018 |
|---|---|---|
| Generation | — | Radeon Pro Mac (Vega Series) |
| Production | — | Active |
| Interface | — | PCIe 3.0 x16 |
