AMD Radeon HD 7720 OEM vs NVIDIA GeForce GT 640 Rev. 2
What is the difference between AMD Radeon HD 7720 OEM and NVIDIA GeForce GT 640 Rev. 2. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Barts | GPU Name | GK208 |
| Barts LE (215-0798002) | Model number | GK208-400-A1 |
| TeraScale 2 | Architecture | Kepler 2.0 |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 28 nm |
| 1,700 million | Transistors | 1,020 million |
| 255 mm² | Die Size | 87 mm² |
Graphics Card
| Mar 15th, 2013 | Release Date | May 29th, 2013 |
| Southern Islands (HD 7700) | Family | GeForce 600 |
| End-of-life | Production | End-of-life |
| Northern Islands | Predecessor | GeForce 500 |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x8 |
Memory
| 1024 MB | Memory Size | 1024 MB |
| GDDR5 | Memory Type | GDDR5 |
| 256 bit | Memory Bus | 64 bit |
| 134.4 GB/s | Bandwidth | 40.06 GB/s |
Performance
| 26.88 GPixel/s | Pixel fillrate | 8.368 GPixel/s |
| 33.60 GTexel/s | Texture fillrate | 33.47 GTexel/s |
| 1,344 GFLOPS | FP32 (float) performance | 803.3 GFLOPS |
Clock Speeds
| 1050 MHz 4.2 Gbps effective | Memory Clock | 1252 MHz 5 Gbps effective |
| 840 MHz | GPU Clock | 1046 MHz |
Render Config
| 800 | Shading Units | 384 |
| 40 | TMUs | 32 |
| 32 | ROPs | 8 |
| 8 KB (per CU) | L1 Cache | 16 KB (per SMX) |
| 512 KB | L2 Cache | 512 KB |
Board Design
| Dual-slot | Slot Width | Single-slot |
| 198 mm 7.8 inches | Length | 145 mm 5.7 inches |
| 150 W | Thermal design power (TDP) | 49 W |
| 450 W | Suggested PSU | 200 W |
| 2x DVI 1x HDMI 1x DisplayPort | Display Connectors | 1x DVI 1x HDMI 1x VGA |
API support
| 11.2 (11_0) | DirectX | 12 (11_0) |
| 4.4 | OpenGL | 4.6 |
| 1.2 | OpenCL | 3.0 |
| N/A | Vulkan | 1.1 |
| 5.0 | Shader Model | 5.1 |