AMD Radeon RX 640 Mobile vs NVIDIA T400 4 GB
Graphics Processor
| GPU model | Polaris 23 | TU117 |
|---|---|---|
| GPU variant | Polaris 23 XT | — |
| Architecture | GCN 4.0 | Turing |
| Foundry | GlobalFoundries | TSMC |
| Manufacturing process | 14 nm | 12 nm |
| Number of transistors | 2,200 million | 4,700 million |
| Die size | 103 mm² | 200 mm² |
Mobile graphics
| Release date | May 13th, 2019 | — |
|---|---|---|
| Generation | Mobility Radeon (M600) | — |
| Production | Active | — |
| Interface | PCIe 3.0 x8 | — |
| Predecessor | Crystal System | — |
Clocks
| Base clock | 1082 MHz | 420 MHz |
|---|---|---|
| Boost clock | 1218 MHz | 1425 MHz |
| Memory clock | 1500 MHz 6 Gbps effective | 1250 MHz 10 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 4 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR6 |
| Memory bus width | 64 bit | 64 bit |
| Bandwidth | 48.00 GB/s | 80.00 GB/s |
Render Configuration
| Shading units | 640 | 384 |
|---|---|---|
| TMUs | 40 | 24 |
| ROPs | 16 | 16 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 512 KB | 1024 KB |
| SM count | — | 6 |
Performance
| Pixel rate | 19.49 GPixel/s | 22.80 GPixel/s |
|---|---|---|
| Texture rate | 48.72 GTexel/s | 34.20 GTexel/s |
| FP16 (half) performance | 1.559 TFLOPS (1:1) | 2.189 TFLOPS (2:1) |
| FP32 (float) performance | 1.559 TFLOPS | 1,094 GFLOPS |
| FP64 (double) performance | 97.44 GFLOPS (1:16) | 34.20 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | Dual-slot | Single-slot |
|---|---|---|
| TDP | 50 W | 30 W |
| Outputs | No outputs | 3x mini-DisplayPort |
| Power connectors | None | None |
| Suggested PSU | — | 200 W |
API Support & Features
| DirectX | 12 (12_0) | 12 (12_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 3.0 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.4 | 6.6 |
| CUDA | — | 7.5 |
Other Features
Graphics Card
| Release date | — | May 6th, 2021 |
|---|---|---|
| Generation | — | Quadro |
| Production | — | Active |
| Interface | — | PCIe 3.0 x16 |
