AMD FireStream 9250 vs NVIDIA GeForce 940A
Graphics Processor
| GPU model | RV770 | GM108 |
|---|---|---|
| GPU variant | RV770 PRO | N16S-GT-S |
| Architecture | TeraScale | Maxwell |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 28 nm |
| Number of transistors | 956 million | unknown |
| Die size | 256 mm² | unknown |
Graphics Card
| Release date | Jun 16th, 2008 | — |
|---|---|---|
| Generation | FireStream | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
Clocks
| GPU clock | 625 MHz | — |
|---|---|---|
| Memory clock | 993 MHz 1986 Mbps effective | 1001 MHz 2 Gbps effective |
| Base clock | — | 1072 MHz |
| Boost clock | — | 1176 MHz |
Memory Configuration
| Memory size | 1024 MB | 2 GB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 256 bit | 64 bit |
| Bandwidth | 63.55 GB/s | 16.02 GB/s |
Render Configuration
| Shading units | 800 | 384 |
|---|---|---|
| TMUs | 40 | 16 |
| ROPs | 16 | 8 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SMM) |
| Cache L2 | 256 KB | 1024 KB |
| SMM count | — | 3 |
Performance
| Pixel rate | 10.00 GPixel/s | 9.408 GPixel/s |
|---|---|---|
| Texture rate | 25.00 GTexel/s | 18.82 GTexel/s |
| FP32 (float) performance | 1,000 GFLOPS | 903.2 GFLOPS |
| FP64 (double) performance | 200.0 GFLOPS (1:5) | 28.22 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | Single-slot | IGP |
|---|---|---|
| Length | 234 mm 9.2 inches | — |
| Width | 111 mm 4.4 inches | — |
| TDP | 150 W | 33 W |
| Suggested PSU | 450 W | — |
| Outputs | 1x DVI | No outputs |
| Power connectors | 1x 6-pin | — |
API Support & Features
| DirectX | 10.1 (10_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 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 |
