AMD Radeon HD 8970 OEM vs NVIDIA GeForce GTX 660 Ti
What is the difference between AMD Radeon HD 8970 OEM and NVIDIA GeForce GTX 660 Ti. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Tahiti | GPU Name | GK104 |
| Tahiti XT (215-0821060) | Model number | GK104-300-KD-A2 |
| GCN 1.0 | Architecture | Kepler |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 4,313 million | Transistors | 3,540 million |
| 352 mm² | Die Size | 294 mm² |
Graphics Card
| Jan 8th, 2013 | Release Date | Aug 16th, 2012 |
| Sea Islands (HD 8900) | Family | GeForce 600 |
| End-of-life | Production | End-of-life |
| Southern Islands | Predecessor | GeForce 500 |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 3 GB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 384 bit | Memory Bus | 192 bit |
| 264.0 GB/s | Bandwidth | 144.2 GB/s |
Performance
| 29.60 GPixel/s | Pixel fillrate | 27.44 GPixel/s |
| 118.4 GTexel/s | Texture fillrate | 109.8 GTexel/s |
| 3.789 TFLOPS | FP32 (float) performance | 2.634 TFLOPS |
| 947.2 GFLOPS (1:4) | FP64 (double) performance | 109.8 GFLOPS (1:24) |
Clock Speeds
| 1375 MHz 5.5 Gbps effective | Memory Clock | 1502 MHz 6 Gbps effective |
Render Config
| 2048 | Shading Units | 1344 |
| 128 | TMUs | 112 |
| 32 | ROPs | 24 |
| 16 KB (per CU) | L1 Cache | 16 KB (per SMX) |
| 768 KB | L2 Cache | 384 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 274 mm 10.8 inches | Length | 241 mm 9.5 inches |
| 250 W | Thermal design power (TDP) | 150 W |
| 600 W | Suggested PSU | 450 W |
| 1x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | 2x DVI 1x HDMI 1x DisplayPort |
| 1x 6-pin + 1x 8-pin | Power Connectors | 2x 6-pin |
| C386 | Board Number | P2004 |
API support
| 12 (11_1) | DirectX | 12 (11_0) |
| 4.6 | OpenGL | 4.6 |
| 1.2 | OpenCL | 3.0 |
| 1.2 | Vulkan | 1.1 |
| 5.1 | Shader Model | 5.1 |