AMD Radeon HD 8850M vs AMD Radeon R7 A265
Graphics Processor
| GPU model | Venus | Opal |
|---|---|---|
| GPU variant | Venus PRO | Opal XT |
| Architecture | GCN 1.0 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 1,500 million | 950 million |
| Die size | 123 mm² | 77 mm² |
Mobile graphics
| Release date | Apr 1st, 2013 | Jan 9th, 2014 |
|---|---|---|
| Generation | Solar System (HD 8800M) | All-In-One (Rx 200) |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Predecessor | London | — |
| Successor | Crystal System | — |
Clocks
| Base clock | 575 MHz | 725 MHz |
|---|---|---|
| Boost clock | 625 MHz | 825 MHz |
| Memory clock | 1000 MHz 2 Gbps effective | 900 MHz 1800 Mbps effective |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 32.00 GB/s | 28.80 GB/s |
Render Configuration
| Shading units | 640 | 384 |
|---|---|---|
| TMUs | 40 | 24 |
| ROPs | 16 | 8 |
| Compute units | 10 | 6 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 256 KB |
Performance
| Pixel rate | 10.00 GPixel/s | 6.600 GPixel/s |
|---|---|---|
| Texture rate | 25.00 GTexel/s | 19.80 GTexel/s |
| FP32 (float) performance | 800.0 GFLOPS | 633.6 GFLOPS |
| FP64 (double) performance | 50.00 GFLOPS (1:16) | 39.60 GFLOPS (1:16) |
Dimensions & Outputs
| TDP | unknown | unknown |
|---|---|---|
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 12 (11_1) | 12 (11_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 5.1 | 5.1 |
