AMD Radeon R5 M255 vs ATI Radeon X1600 XT Dual
Graphics Processor
| GPU model | Topaz | RV530 |
|---|---|---|
| GPU variant | Topaz PRO (216-0864032) | — |
| Architecture | GCN 3.0 | R500 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 90 nm |
| Number of transistors | 1,550 million | 157 million |
| Die size | 125 mm² | 150 mm² |
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 | — |
Clocks
| Base clock | 925 MHz | — |
|---|---|---|
| Boost clock | 940 MHz | — |
| Memory clock | 1000 MHz 4 Gbps effective | 690 MHz 1380 Mbps effective |
| GPU clock | — | 590 MHz |
Memory Configuration
| Memory size | 1024 MB | 256 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR3 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 64.00 GB/s | 22.08 GB/s |
Render Configuration
| Shading units | 384 | — |
|---|---|---|
| TMUs | 24 | 4 |
| ROPs | 8 | 4 |
| Compute units | 6 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 256 KB | — |
| Pixel shaders | — | 12 |
| Vertex shaders | — | 5 |
Performance
| Pixel rate | 7.520 GPixel/s | 2.360 GPixel/s |
|---|---|---|
| Texture rate | 22.56 GTexel/s | 2.360 GTexel/s |
| FP16 (half) performance | 721.9 GFLOPS (1:1) | — |
| FP32 (float) performance | 721.9 GFLOPS | — |
| FP64 (double) performance | 45.12 GFLOPS (1:16) | — |
| Vertex rate | — | 737.5 MVertices/s |
Dimensions & Outputs
| TDP | unknown | unknown |
|---|---|---|
| Outputs | No outputs | 2x DVI |
| Slot width | — | Single-slot |
| Suggested PSU | — | 200 W |
| Power connectors | — | 1x Molex |
API Support & Features
| DirectX | 12 (12_0) | 9.0c (9_3) |
|---|---|---|
| OpenGL | 4.6 | 2.1 |
| OpenCL | 2.0 | — |
| Vulkan | 1.2 | — |
| Shader model | 6.3 | 3.0 |
Other Features
Graphics Card
| Release date | — | Never Released |
|---|---|---|
| Generation | — | Radeon R500 PCIe |
| Production | — | End-of-life |
| Interface | — | PCIe 1.0 x16 |
| Reviews | — | 64 in our database |
| Predecessor | — | Radeon R400 PCIe |
| Successor | — | Radeon R600 |
