NVIDIA GeForce GT 640 Rev. 2 vs AMD Radeon 540X Mobile
What is the difference between NVIDIA GeForce GT 640 Rev. 2 and AMD Radeon 540X Mobile. Find out which graphics card has better performance.
Graphics Processor (GPU)
| GK208 | GPU Name | Lexa |
| GK208-400-A1 | Model number | Lexa PRO (215-0904018) |
| Kepler 2.0 | Architecture | GCN 4.0 |
| TSMC | Foundry | GlobalFoundries |
| 28 nm | Process Size | 14 nm |
| 1,020 million | Transistors | 2,200 million |
| 87 mm² | Die Size | 103 mm² |
Graphics Card
| May 29th, 2013 | Release Date | Feb 11th, 2019 |
| GeForce 600 | Family | Mobility Radeon (M500X) |
| End-of-life | Production | Active |
| GeForce 500 | Predecessor | Crystal System |
| PCIe 2.0 x8 | Bus Interface | PCIe 3.0 x8 |
Memory
| 1024 MB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 64 bit | Memory Bus | 64 bit |
| 40.06 GB/s | Bandwidth | 32.00 GB/s |
Performance
| 8.368 GPixel/s | Pixel fillrate | 17.52 GPixel/s |
| 33.47 GTexel/s | Texture fillrate | 35.04 GTexel/s |
| 803.3 GFLOPS | FP32 (float) performance | 1,121 GFLOPS |
| 33.47 GFLOPS (1:24) | FP64 (double) performance | 70.08 GFLOPS (1:16) |
Clock Speeds
| 1252 MHz 5 Gbps effective | Memory Clock | 1000 MHz 4 Gbps effective |
Render Config
| 384 | Shading Units | 512 |
| 32 | TMUs | 32 |
| 8 | ROPs | 16 |
| 16 KB (per SMX) | L1 Cache | 16 KB (per CU) |
| 512 KB | L2 Cache | 512 KB |
Board Design
| Single-slot | Slot Width | Dual-slot |
| 49 W | Thermal design power (TDP) | 50 W |
| 1x DVI 1x HDMI 1x VGA | Display Connectors | No outputs |
| None | Power Connectors | None |
API support
| 12 (11_0) | DirectX | 12 (12_0) |
| 4.6 | OpenGL | 4.6 |
| 3.0 | OpenCL | 2.1 |
| 1.1 | Vulkan | 1.2 |
| 5.1 | Shader Model | 6.4 |