AMD Radeon R5 330 OEM vs AMD Radeon R5 M255
Graphics Processor
| GPU model | Hainan | Topaz |
|---|---|---|
| Architecture | GCN 1.0 | GCN 3.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 690 million | 1,550 million |
| Die size | 56 mm² | 125 mm² |
| GPU variant | — | Topaz PRO (216-0864032) |
Graphics Card
| Release date | May 5th, 2015 | — |
|---|---|---|
| Generation | Pirate Islands | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x8 | — |
| Predecessor | Volcanic Islands | — |
| Successor | Arctic Islands | — |
Clocks
| Base clock | 830 MHz | 925 MHz |
|---|---|---|
| Boost clock | 855 MHz | 940 MHz |
| Memory clock | 900 MHz 1800 Mbps effective | 1000 MHz 4 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 1024 MB |
|---|---|---|
| Memory type | DDR3 | GDDR5 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 14.40 GB/s | 64.00 GB/s |
Render Configuration
| Shading units | 320 | 384 |
|---|---|---|
| TMUs | 20 | 24 |
| ROPs | 8 | 8 |
| Compute units | 5 | 6 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 128 KB | 256 KB |
Performance
| Pixel rate | 6.840 GPixel/s | 7.520 GPixel/s |
|---|---|---|
| Texture rate | 17.10 GTexel/s | 22.56 GTexel/s |
| FP32 (float) performance | 547.2 GFLOPS | 721.9 GFLOPS |
| FP16 (half) performance | — | 721.9 GFLOPS (1:1) |
| FP64 (double) performance | — | 45.12 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | Single-slot | — |
|---|---|---|
| TDP | 50 W | unknown |
| Suggested PSU | 250 W | — |
| Outputs | No outputs | No outputs |
| Power connectors | None | — |
API Support & 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 |
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 |
