NVIDIA Quadro K620 vs NVIDIA Quadro P400
Graphics Processor
| GPU model | GM107 | GP107 |
|---|---|---|
| GPU variant | GM107-850-A2 | — |
| Architecture | Maxwell | Pascal |
| Foundry | TSMC | Samsung |
| Manufacturing process | 28 nm | 14 nm |
| Number of transistors | 1,870 million | 3,300 million |
| Die size | 148 mm² | 132 mm² |
Graphics Card
| Release date | Jul 22nd, 2014 | Feb 7th, 2017 |
|---|---|---|
| Generation | Quadro | Quadro |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Reviews | 26 in our database | — |
Clocks
| Base clock | 1058 MHz | 1228 MHz |
|---|---|---|
| Boost clock | 1124 MHz | 1252 MHz |
| Memory clock | 900 MHz 1800 Mbps effective | 1002 MHz 4 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | DDR3 | GDDR5 |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 28.80 GB/s | 32.06 GB/s |
Render Configuration
| Shading units | 384 | 256 |
|---|---|---|
| TMUs | 24 | 16 |
| ROPs | 16 | 16 |
| SMM count | 3 | — |
| Cache L1 | 64 KB (per SMM) | 48 KB (per SM) |
| Cache L2 | 2 MB | 512 KB |
| SM count | — | 2 |
Performance
| Pixel rate | 17.98 GPixel/s | 20.03 GPixel/s |
|---|---|---|
| Texture rate | 26.98 GTexel/s | 20.03 GTexel/s |
| FP32 (float) performance | 863.2 GFLOPS | 641.0 GFLOPS |
| FP64 (double) performance | 26.98 GFLOPS (1:32) | 20.03 GFLOPS (1:32) |
| FP16 (half) performance | — | 10.02 GFLOPS (1:64) |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 160 mm 6.3 inches | 150 mm 5.9 inches |
| Width | 69 mm 2.7 inches | 69 mm 2.7 inches |
| TDP | 45 W | 30 W |
| Suggested PSU | 200 W | 200 W |
| Outputs | 1x DVI1x DisplayPort | 3x mini-DisplayPort |
| Power connectors | None | None |
| Board number | P2012 | PG212 SKU 500 |
API Support & Features
| DirectX | 12 (11_0) | 12 (12_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.1 | 1.2 |
| CUDA | 5.0 | 6.1 |
| Shader model | 5.1 | 6.4 |
