AMD Radeon HD 7660G IGP vs NVIDIA GeForce 820M
Graphics Processor
| GPU model | Devastator | GF117 |
|---|---|---|
| Architecture | TeraScale 3 | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 32 nm | 28 nm |
| Number of transistors | 1,303 million | 585 million |
| Die size | 246 mm² | 116 mm² |
| GPU variant | — | N15V-GM-B-A2 |
Integrated Graphics
| Release date | May 15th, 2012 | — |
|---|---|---|
| Generation | Trinity (HD 7000 Mobile) | — |
| Production | End-of-life | — |
| Interface | IGP | — |
| Predecessor | Sumo | — |
| Successor | Richland | — |
Clocks
| GPU clock | 686 MHz | 625 MHz |
|---|---|---|
| Memory clock | System Shared | 900 MHz 1800 Mbps effective |
| Shader clock | — | 1250 MHz |
Memory Configuration
| Memory size | System Shared | 1024 MB |
|---|---|---|
| Memory type | System Shared | DDR3 |
| Memory bus width | System Shared | 64 bit |
| Bandwidth | System Dependent | 14.40 GB/s |
Render Configuration
| Shading units | 384 | 96 |
|---|---|---|
| TMUs | 24 | 16 |
| ROPs | 8 | 8 |
| Compute units | 6 | — |
| SM count | — | 2 |
| Cache L1 | — | 64 KB (per SM) |
| Cache L2 | — | 128 KB |
Performance
| Pixel rate | 5.488 GPixel/s | 2.500 GPixel/s |
|---|---|---|
| Texture rate | 16.46 GTexel/s | 10.00 GTexel/s |
| FP32 (float) performance | 526.8 GFLOPS | 240.0 GFLOPS |
| FP64 (double) performance | — | 20.00 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | IGP | — |
|---|---|---|
| TDP | 35 W | 15 W |
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 11.2 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | — | — |
| Shader model | 5.0 | 5.1 |
| CUDA | — | 2.1 |
Other Features
Mobile graphics
| Release date | — | Nov 27th, 2013 |
|---|---|---|
| Generation | — | GeForce 800M |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Predecessor | — | GeForce 700M |
| Successor | — | GeForce 900M |
