AMD Radeon R7 Graphics vs NVIDIA GeForce GT 640 OEM Rebrand
What is the difference between AMD Radeon R7 Graphics and NVIDIA GeForce GT 640 OEM Rebrand. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Spectre Lite | GPU Name | GF116 |
| GCN 2.0 | Architecture | Fermi 2.0 |
| GlobalFoundries | Foundry | TSMC |
| 28 nm | Process Size | 40 nm |
| 2,410 million | Transistors | 1,170 million |
| 245 mm² | Die Size | 238 mm² |
Graphics Card
| Feb 17th, 2014 | Release Date | Apr 24th, 2012 |
| Kaveri (Rx 200) | Family | GeForce 600 |
| End-of-life | Production | End-of-life |
| Mullins | Predecessor | GeForce 500 |
| IGP | Bus Interface | PCIe 2.0 x16 |
Memory
| System Shared | Memory Size | 1536 MB |
| System Shared | Memory Type | DDR3 |
| System Shared | Memory Bus | 192 bit |
| System Dependent | Bandwidth | 38.40 GB/s |
Performance
| 5.760 GPixel/s | Pixel fillrate | 4.320 GPixel/s |
| 17.28 GTexel/s | Texture fillrate | 17.28 GTexel/s |
| 553.0 GFLOPS | FP32 (float) performance | 414.7 GFLOPS |
| 34.56 GFLOPS (1:16) | FP64 (double) performance | 34.56 GFLOPS (1:12) |
Clock Speeds
| System Shared | Memory Clock | 800 MHz 1600 Mbps effective |
| 720 MHz | GPU Clock | 720 MHz |
Render Config
| 384 | Shading Units | 144 |
| 24 | TMUs | 24 |
| 8 | ROPs | 24 |
Board Design
| IGP | Slot Width | Single-slot |
| 90 W | Thermal design power (TDP) | 75 W |
| No outputs | Display Connectors | 2x DVI 1x mini-HDMI |
API support
| 12 (12_0) | DirectX | 12 (11_0) |
| 4.6 | OpenGL | 4.6 |
| 2.0 | OpenCL | 1.1 |
| 1.2 | Vulkan | N/A |
| 6.0 | Shader Model | 5.1 |