AMD Radeon HD 8790M vs ATI Mobility Radeon HD 4870
What is the difference between AMD Radeon HD 8790M and ATI Mobility Radeon HD 4870. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Mars | GPU Name | M98 |
| Mars XTX | Model number | M98 XT (216-0732023) |
| 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 |
| MXM-A (3.0) | Bus Interface | PCIe 2.0 x16 |
Memory
| 2 GB | Memory Size | 512 MB |
| GDDR5 | Memory Type | GDDR3 |
| 128 bit | Memory Bus | 256 bit |
| 64.00 GB/s | Bandwidth | 56.83 GB/s |
Performance
| 7.200 GPixel/s | Pixel fillrate | 8.800 GPixel/s |
| 21.60 GTexel/s | Texture fillrate | 22.00 GTexel/s |
| 691.2 GFLOPS | FP32 (float) performance | 880.0 GFLOPS |
| 43.20 GFLOPS (1:16) | FP64 (double) performance | 176.0 GFLOPS (1:5) |
Clock Speeds
| 1000 MHz 4 Gbps effective | Memory Clock | 888 MHz 1776 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 |