AMD Radeon HD 8670D IGP vs AMD Radeon R5 M255
Graphics Processor
| GPU model | Devastator | Topaz |
|---|---|---|
| Architecture | TeraScale 3 | GCN 3.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 32 nm | 28 nm |
| Number of transistors | 1,303 million | 1,550 million |
| Die size | 246 mm² | 125 mm² |
| GPU variant | — | Topaz PRO (216-0864032) |
Integrated Graphics
| Release date | Mar 12th, 2013 | — |
|---|---|---|
| Generation | Richland (HD 8000) | — |
| Production | End-of-life | — |
| Interface | IGP | — |
| Predecessor | Trinity | — |
| Successor | Kabini | — |
Clocks
| GPU clock | 844 MHz | — |
|---|---|---|
| Memory clock | System Shared | 1000 MHz 4 Gbps effective |
| Base clock | — | 925 MHz |
| Boost clock | — | 940 MHz |
Memory Configuration
| Memory size | System Shared | 1024 MB |
|---|---|---|
| Memory type | System Shared | GDDR5 |
| Memory bus width | System Shared | 128 bit |
| Bandwidth | System Dependent | 64.00 GB/s |
Render Configuration
| Shading units | 384 | 384 |
|---|---|---|
| TMUs | 24 | 24 |
| ROPs | 8 | 8 |
| Compute units | 6 | 6 |
| Cache L1 | — | 16 KB (per CU) |
| Cache L2 | — | 256 KB |
Performance
| Pixel rate | 6.752 GPixel/s | 7.520 GPixel/s |
|---|---|---|
| Texture rate | 20.26 GTexel/s | 22.56 GTexel/s |
| FP32 (float) performance | 648.2 GFLOPS | 721.9 GFLOPS |
| FP16 (half) performance | — | 721.9 GFLOPS (1:1) |
| FP64 (double) performance | — | 45.12 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | IGP | — |
|---|---|---|
| TDP | 100 W | unknown |
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 11.2 (11_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | — | 1.2 |
| Shader model | 5.0 | 6.3 |
Other Features
Mobile graphics
| Release date | — | Oct 12th, 2014 |
|---|---|---|
| Generation | — | Crystal System (R5 M200) |
| Production | — | End-of-life |
| Interface | — | PCIe 3.0 x8 |
| Predecessor | — | Solar System |
| Successor | — | Mobility Radeon |
