NVIDIA GeForce GT 745A vs NVIDIA Quadro K620M
Graphics Processor
| GPU model | GK107 | GM108 |
|---|---|---|
| GPU variant | N14P-LP | N15M-Q3 |
| Architecture | Kepler | Maxwell |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 1,270 million | unknown |
| Die size | 118 mm² | unknown |
Mobile graphics
| Release date | Aug 26th, 2013 | Mar 1st, 2015 |
|---|---|---|
| Generation | GeForce 700A | Quadro Mobile (Kx200M) |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | MXM-A (3.0) |
| Predecessor | GeForce 600A | — |
| Successor | GeForce 800A | — |
| Reviews | — | 26 in our database |
Clocks
| Base clock | 837 MHz | 1029 MHz |
|---|---|---|
| Boost clock | 915 MHz | 1124 MHz |
| Memory clock | 900 MHz 1800 Mbps effective | 900 MHz 1800 Mbps effective |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 28.80 GB/s | 14.40 GB/s |
Render Configuration
| Shading units | 384 | 384 |
|---|---|---|
| TMUs | 32 | 16 |
| ROPs | 16 | 8 |
| SMX count | 2 | — |
| Cache L1 | 16 KB (per SMX) | 64 KB (per SMM) |
| Cache L2 | 256 KB | 1024 KB |
| SMM count | — | 2 |
Performance
| Pixel rate | 7.320 GPixel/s | 8.992 GPixel/s |
|---|---|---|
| Texture rate | 29.28 GTexel/s | 17.98 GTexel/s |
| FP32 (float) performance | 702.7 GFLOPS | 863.2 GFLOPS |
| FP64 (double) performance | 29.28 GFLOPS (1:24) | 26.98 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | MXM Module | MXM Module |
|---|---|---|
| TDP | 33 W | 30 W |
| Outputs | No outputs | No outputs |
| Power connectors | — | None |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.1 | 1.1 |
| CUDA | 3.0 | 5.0 |
| Shader model | 5.1 | 5.1 |
