NVIDIA GeForce GT 645M vs AMD Radeon R5 M255
What is the difference between NVIDIA GeForce GT 645M and AMD Radeon R5 M255. Find out which graphics card has better performance.
Benchmarks
| 958 | PassMark G3D | 513 |
| 175 | PassMark G2D | 143 |
Graphics Processor (GPU)
| GK107 | GPU Name | Topaz |
| N13P-GS | Model number | Topaz PRO (216-0864032) |
| Kepler | Architecture | GCN 3.0 |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 1,270 million | Transistors | 1,550 million |
| 118 mm² | Die Size | 125 mm² |
Graphics Card
| Oct 1st, 2012 | Release Date | Oct 12th, 2014 |
| GeForce 600M | Family | Crystal System (R5 M200) |
| End-of-life | Production | End-of-life |
| GeForce 500M | Predecessor | Solar System |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x8 |
Memory
| 2 GB | Memory Size | 1024 MB |
| DDR3 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 128 bit |
| 28.80 GB/s | Bandwidth | 64.00 GB/s |
Performance
| 5.672 GPixel/s | Pixel fillrate | 7.520 GPixel/s |
| 22.69 GTexel/s | Texture fillrate | 22.56 GTexel/s |
| 544.5 GFLOPS | FP32 (float) performance | 721.9 GFLOPS |
| 22.69 GFLOPS (1:24) | FP64 (double) performance | 45.12 GFLOPS (1:16) |
Clock Speeds
| 900 MHz 1800 Mbps effective | Memory Clock | 1000 MHz 4 Gbps effective |
Render Config
| 384 | Shading Units | 384 |
| 32 | TMUs | 24 |
| 16 | ROPs | 8 |
| 16 KB (per SMX) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 256 KB |
Board Design
| 32 W | Thermal design power (TDP) | unknown |
| No outputs | Display Connectors | No outputs |
API support
| 12 (11_0) | DirectX | 12 (12_0) |
| 4.6 | OpenGL | 4.6 |
| 3.0 | OpenCL | 2.0 |
| 1.1 | Vulkan | 1.2 |
| 5.1 | Shader Model | 6.3 |