AMD Radeon 550 vs NVIDIA GeForce GTX 950A
Graphics Processor
| GPU model | Lexa | GM107 |
|---|---|---|
| GPU variant | Lexa PRO (215-0904018) | N16P-GT |
| Architecture | GCN 4.0 | Maxwell |
| Foundry | GlobalFoundries | TSMC |
| Manufacturing process | 14 nm | 28 nm |
| Number of transistors | 2,200 million | 1,870 million |
| Die size | 103 mm² | 148 mm² |
Graphics Card
| Release date | Apr 20th, 2017 | — |
|---|---|---|
| Generation | Polaris | — |
| Production | End-of-life | — |
| Launch price | 79 USD | — |
| Interface | PCIe 3.0 x8 | — |
| Predecessor | Arctic Islands | — |
| Successor | Vega | — |
Clocks
| Base clock | 1100 MHz | 993 MHz |
|---|---|---|
| Boost clock | 1183 MHz | 1124 MHz |
| Memory clock | 1750 MHz 7 Gbps effective | 1001 MHz 2 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | DDR3 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 56.00 GB/s | 32.03 GB/s |
Render Configuration
| Shading units | 512 | 640 |
|---|---|---|
| TMUs | 32 | 40 |
| ROPs | 16 | 16 |
| Compute units | 8 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SMM) |
| Cache L2 | 256 KB | 2 MB |
| SMM count | — | 5 |
Performance
| Pixel rate | 18.93 GPixel/s | 17.98 GPixel/s |
|---|---|---|
| Texture rate | 37.86 GTexel/s | 44.96 GTexel/s |
| FP16 (half) performance | 1,211 GFLOPS (1:1) | — |
| FP32 (float) performance | 1,211 GFLOPS | 1,439 GFLOPS |
| FP64 (double) performance | 75.71 GFLOPS (1:16) | 44.96 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | Dual-slot | MXM Module |
|---|---|---|
| Length | 145 mm 5.7 inches | — |
| TDP | 50 W | 75 W |
| Suggested PSU | 250 W | — |
| Outputs | 1x DVI1x HDMI1x DisplayPort | No outputs |
| Power connectors | None | — |
| Board number | D090-01 | — |
API Support & Features
| DirectX | 12 (12_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 3.0 |
| Vulkan | 1.2 | 1.1 |
| Shader model | 6.4 | 5.1 |
| CUDA | — | 5.0 |
Other Features
Mobile graphics
| Release date | — | Mar 13th, 2015 |
|---|---|---|
| Generation | — | GeForce 900A |
| Production | — | End-of-life |
| Interface | — | MXM-B (3.0) |
| Predecessor | — | GeForce 800A |
