ATI Radeon Xpress 2100 IGP vs NVIDIA GeForce 945A
Graphics Processor
| GPU model | RS780 | GM108 |
|---|---|---|
| Architecture | TeraScale | Maxwell |
| Manufacturing process | 65 nm | 28 nm |
| Number of transistors | 180 million | unknown |
| Die size | 85 mm² | unknown |
| Foundry | — | TSMC |
Integrated Graphics
| Release date | Mar 4th, 2008 | — |
|---|---|---|
| Generation | Radeon IGP (2000) | — |
| Production | End-of-life | — |
| Interface | PCIe 1.0 x16 | — |
Clocks
| GPU clock | 500 MHz | — |
|---|---|---|
| Memory clock | System Shared | 1253 MHz 5 Gbps effective |
| Base clock | — | 1006 MHz |
| Boost clock | — | 1189 MHz |
Memory Configuration
| Memory size | System Shared | 1024 MB |
|---|---|---|
| Memory type | System Shared | GDDR5 |
| Memory bus width | System Shared | 64 bit |
| Bandwidth | System Dependent | 40.10 GB/s |
Render Configuration
| Shading units | 40 | 384 |
|---|---|---|
| TMUs | 4 | 24 |
| ROPs | 4 | 8 |
| Compute units | 2 | — |
| SMM count | — | 3 |
| Cache L1 | — | 64 KB (per SMM) |
| Cache L2 | — | 1024 KB |
Performance
| Pixel rate | 2.000 GPixel/s | 9.512 GPixel/s |
|---|---|---|
| Texture rate | 2.000 GTexel/s | 28.54 GTexel/s |
| FP32 (float) performance | 40.00 GFLOPS | 913.2 GFLOPS |
| FP64 (double) performance | — | 28.54 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | IGP | MXM Module |
|---|---|---|
| TDP | unknown | 33 W |
| Outputs | No outputs | No outputs |
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 13th, 2015 |
|---|---|---|
| Generation | — | GeForce 900A |
| Production | — | End-of-life |
| Interface | — | PCIe 3.0 x8 |
| Predecessor | — | GeForce 800A |
