NVIDIA GeForce GTX 660M vs ATI Radeon HD 4870 Mac Edition
What is the difference between NVIDIA GeForce GTX 660M and ATI Radeon HD 4870 Mac Edition. Find out which graphics card has better performance.
Graphics Processor (GPU)
| GK107 | GPU Name | RV770 |
| N13E-GE-A2 | Model number | RV770 XT Mac (215-0669080) |
| 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
| Mar 22nd, 2012 | Release Date | Jan 6th, 2009 |
| 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
| 1024 MB | Memory Size | 512 MB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 256 bit |
| 64.00 GB/s | Bandwidth | 108.8 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
| 1000 MHz 4 Gbps effective | Memory Clock | 850 MHz 3.4 Gbps effective |
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 | 1x DVI 1x mini-DisplayPort |
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 |