NVIDIA GeForce GTX 660M Mac Edition vs ATI Radeon HD 4870
What is the difference between NVIDIA GeForce GTX 660M Mac Edition and ATI Radeon HD 4870. Find out which graphics card has better performance.
Graphics Processor (GPU)
| GK107 | GPU Name | RV770 |
| Kepler | Architecture | TeraScale |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 55 nm |
| 1,270 million | Transistors | 956 million |
| 118 mm² | Die Size | 256 mm² |
Graphics Card
| Apr 1st, 2013 | Release Date | Jun 25th, 2008 |
| GeForce 600M | Family | Radeon R700 (HD 4800) |
| End-of-life | Production | End-of-life |
| GeForce 500M | Predecessor | Radeon R600 |
| MXM-B (3.0) | Bus Interface | PCIe 2.0 x16 |
Memory
| 512 MB | Memory Size | 512 MB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 256 bit |
| 80.00 GB/s | Bandwidth | 115.2 GB/s |
Performance
| 7.600 GPixel/s | Pixel fillrate | 12.00 GPixel/s |
| 30.40 GTexel/s | Texture fillrate | 30.00 GTexel/s |
| 729.6 GFLOPS | FP32 (float) performance | 1,200 GFLOPS |
| 30.40 GFLOPS (1:24) | FP64 (double) performance | 240.0 GFLOPS (1:5) |
Clock Speeds
| 1250 MHz 5 Gbps effective | Memory Clock | 900 MHz 3.6 Gbps effective |
| 950 MHz | GPU Clock | 750 MHz |
Render Config
| 384 | Shading Units | 800 |
| 32 | TMUs | 40 |
| 16 | ROPs | 16 |
| 16 KB (per SMX) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 256 KB |
Board Design
| MXM Module | Slot Width | Dual-slot |
| 50 W | Thermal design power (TDP) | 150 W |
| No outputs | Display Connectors | 2x DVI 1x S-Video |
| None | Power Connectors | 2x 6-pin |
API support
| 12 (11_0) | DirectX | 10.1 (10_1) |
| 4.6 | OpenGL | 3.3 |
| 3.0 | OpenCL | 1.1 |
| 1.1 | Vulkan | N/A |
| 5.1 | Shader Model | 4.1 |