ATI Radeon 3100 Mobile IGP vs NVIDIA GeForce GTX 850M
Graphics Processor
| GPU model | RS780 | GM107 |
|---|---|---|
| GPU variant | RS780M | N15P-GT-A1 |
| Architecture | TeraScale | Maxwell |
| Manufacturing process | 65 nm | 28 nm |
| Number of transistors | 180 million | 1,870 million |
| Die size | 85 mm² | 148 mm² |
| Foundry | — | TSMC |
Integrated Graphics
| Release date | Aug 15th, 2008 | — |
|---|---|---|
| Generation | Radeon IGP (Mobility HD 3000) | — |
| Production | End-of-life | — |
| Interface | PCIe 1.0 x16 | — |
Clocks
| GPU clock | 350 MHz | 902 MHz |
|---|---|---|
| Memory clock | System Shared | 1001 MHz 2 Gbps effective |
Memory Configuration
| Memory size | System Shared | 2 GB |
|---|---|---|
| Memory type | System Shared | DDR3 |
| Memory bus width | System Shared | 128 bit |
| Bandwidth | System Dependent | 32.03 GB/s |
Render Configuration
| Shading units | 40 | 640 |
|---|---|---|
| TMUs | 4 | 40 |
| ROPs | 4 | 16 |
| Compute units | 2 | — |
| SMM count | — | 5 |
| Cache L1 | — | 64 KB (per SMM) |
| Cache L2 | — | 2 MB |
Performance
| Pixel rate | 1.400 GPixel/s | 14.43 GPixel/s |
|---|---|---|
| Texture rate | 1.400 GTexel/s | 36.08 GTexel/s |
| FP32 (float) performance | 28.00 GFLOPS | 1,155 GFLOPS |
| FP64 (double) performance | — | 36.08 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | IGP | IGP |
|---|---|---|
| TDP | unknown | 45 W |
| Outputs | No outputs | No outputs |
| Power connectors | None | — |
API Support & Features
| DirectX | 10.0 (10_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.0 | 3.0 |
| Vulkan | — | 1.1 |
| Shader model | 4.1 | 5.1 |
| CUDA | — | 5.0 |
Other Features
Mobile graphics
| Release date | — | Mar 12th, 2014 |
|---|---|---|
| Generation | — | GeForce 800M |
| Production | — | End-of-life |
| Interface | — | PCIe 3.0 x16 |
| Predecessor | — | GeForce 700M |
| Successor | — | GeForce 900M |
