AMD Radeon HD 6770M Mac Edition vs NVIDIA GeForce GT 640 OEM Rebrand
What is the difference between AMD Radeon HD 6770M Mac Edition and NVIDIA GeForce GT 640 OEM Rebrand. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Whistler | GPU Name | GF116 |
| Whistler XT (216-0810001) | Model number | GF116-150-A1 |
| TeraScale 2 | Architecture | Fermi 2.0 |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 40 nm |
| 716 million | Transistors | 1,170 million |
| 104 mm² | Die Size | 238 mm² |
Graphics Card
| Jan 28th, 2011 | Release Date | Apr 24th, 2012 |
| Vancouver (HD 6700M) | Family | GeForce 600 |
| End-of-life | Production | End-of-life |
| Manhattan | Predecessor | GeForce 500 |
| MXM-A (3.0) | Bus Interface | PCIe 2.0 x16 |
Memory
| 512 MB | Memory Size | 1536 MB |
| GDDR5 | Memory Type | DDR3 |
| 128 bit | Memory Bus | 192 bit |
| 57.60 GB/s | Bandwidth | 38.40 GB/s |
Performance
| 5.800 GPixel/s | Pixel fillrate | 4.320 GPixel/s |
| 17.40 GTexel/s | Texture fillrate | 17.28 GTexel/s |
| 696.0 GFLOPS | FP32 (float) performance | 414.7 GFLOPS |
Clock Speeds
| 900 MHz 3.6 Gbps effective | Memory Clock | 800 MHz 1600 Mbps effective |
| 725 MHz | GPU Clock | 720 MHz |
Render Config
| 480 | Shading Units | 144 |
| 24 | TMUs | 24 |
| 8 | ROPs | 24 |
| 8 KB (per CU) | L1 Cache | 64 KB (per SM) |
| 256 KB | L2 Cache | 384 KB |
Board Design
| MXM Module | Slot Width | Single-slot |
| 35 W | Thermal design power (TDP) | 75 W |
| No outputs | Display Connectors | 2x DVI 1x mini-HDMI |
API support
| 11.2 (11_0) | DirectX | 12 (11_0) |
| 4.4 | OpenGL | 4.6 |
| 1.2 | OpenCL | 1.1 |
| N/A | Vulkan | N/A |
| 5.0 | Shader Model | 5.1 |