AMD Radeon HD 8770M vs ATI Mobility Radeon HD 4850
What is the difference between AMD Radeon HD 8770M and ATI Mobility Radeon HD 4850. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Mars | GPU Name | M98 |
| GCN 1.0 | Architecture | TeraScale |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 55 nm |
| 950 million | Transistors | 956 million |
| 77 mm² | Die Size | 256 mm² |
Graphics Card
| Apr 1st, 2013 | Release Date | Jan 9th, 2009 |
| Solar System (HD 8700M) | Family | M9x (Mobility HD 4800) |
| End-of-life | Production | End-of-life |
| London | Predecessor | M8x |
| PCIe 3.0 x8 | Bus Interface | PCIe 2.0 x16 |
Memory
| 2 GB | Memory Size | 1024 MB |
| GDDR5 | Memory Type | GDDR3 |
| 128 bit | Memory Bus | 256 bit |
| 72.00 GB/s | Bandwidth | 54.40 GB/s |
Performance
| 6.600 GPixel/s | Pixel fillrate | 8.000 GPixel/s |
| 19.80 GTexel/s | Texture fillrate | 20.00 GTexel/s |
| 633.6 GFLOPS | FP32 (float) performance | 800.0 GFLOPS |
| 39.60 GFLOPS (1:16) | FP64 (double) performance | 160.0 GFLOPS (1:5) |
Clock Speeds
| 1125 MHz 4.5 Gbps effective | Memory Clock | 850 MHz 1700 Mbps effective |
Render Config
| 384 | Shading Units | 800 |
| 24 | TMUs | 40 |
| 8 | ROPs | 16 |
| 6 | Compute Units | 10 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 256 KB |
Board Design
| unknown | Thermal design power (TDP) | unknown |
| No outputs | Display Connectors | No outputs |
API support
| 12 (11_1) | DirectX | 10.1 (10_1) |
| 4.6 | OpenGL | 3.3 |
| 1.2 | OpenCL | 1.1 |
| 1.2 | Vulkan | N/A |
| 5.1 | Shader Model | 4.1 |