AMD Radeon R7 M265 vs ATI Radeon HD 3870 Mac Edition
Graphics Processor
| GPU model | Opal | RV670 |
|---|---|---|
| GPU variant | Opal XT | RV670 XT (215-0708005) |
| Architecture | GCN 1.0 | TeraScale |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 55 nm |
| Number of transistors | 950 million | 666 million |
| Die size | 77 mm² | 192 mm² |
Mobile graphics
| Release date | Jan 9th, 2014 | — |
|---|---|---|
| Generation | Crystal System (R7 M200) | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x8 | — |
| Predecessor | Solar System | — |
| Successor | Mobility Radeon | — |
Clocks
| Base clock | 725 MHz | — |
|---|---|---|
| Boost clock | 825 MHz | — |
| Memory clock | 900 MHz 1800 Mbps effective | 1126 MHz 2.3 Gbps effective |
| GPU clock | — | 777 MHz |
Memory Configuration
| Memory size | 2 GB | 512 MB |
|---|---|---|
| Memory type | DDR3 | GDDR4 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 28.80 GB/s | 72.06 GB/s |
Render Configuration
| Shading units | 384 | 320 |
|---|---|---|
| TMUs | 24 | 16 |
| ROPs | 8 | 16 |
| Compute units | 6 | 4 |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 256 KB | 256 KB |
Performance
| Pixel rate | 6.600 GPixel/s | 12.43 GPixel/s |
|---|---|---|
| Texture rate | 19.80 GTexel/s | 12.43 GTexel/s |
| FP32 (float) performance | 633.6 GFLOPS | 497.3 GFLOPS |
| FP64 (double) performance | — | 99.46 GFLOPS (1:5) |
Dimensions & Outputs
| TDP | unknown | 106 W |
|---|---|---|
| Outputs | No outputs | 2x DVI1x S-Video |
| Slot width | — | Single-slot |
| Length | — | 241 mm 9.5 inches |
| Suggested PSU | — | 300 W |
| Power connectors | — | 1x 6-pin |
API Support & Features
| DirectX | 12 (11_1) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 4.6 | 3.3 (full) 4.0 (partial) |
| OpenCL | 1.2 | — |
| Vulkan | 1.2 | — |
| Shader model | 5.1 | 4.1 |
Other Features
Graphics Card
| Release date | — | Jun 12th, 2008 |
|---|---|---|
| Generation | — | Radeon R600 |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 80 in our database |
| Predecessor | — | Radeon R500 PCIe |
| Successor | — | Radeon R700 |
