NVIDIA GeForce 405 OEM vs NVIDIA GeForce GT 420 OEM
Graphics Processor
| GPU model | GT216 | GF108 |
|---|---|---|
| Architecture | Tesla 2.0 | Fermi |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 40 nm |
| Number of transistors | 486 million | 585 million |
| Die size | 100 mm² | 116 mm² |
| GPU variant | — | GF108-200-A1 |
Graphics Card
| Release date | Sep 3rd, 2010 | Sep 3rd, 2010 |
|---|---|---|
| Generation | GeForce 400 | GeForce 400 |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Predecessor | GeForce 200 | GeForce 200 |
| Successor | GeForce 500 | GeForce 500 |
Clocks
| GPU clock | 475 MHz | 700 MHz |
|---|---|---|
| Shader clock | 1100 MHz | 1400 MHz |
| Memory clock | 800 MHz 1600 Mbps effective | 900 MHz 1800 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 1024 MB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 12.80 GB/s | 28.80 GB/s |
Render Configuration
| Shading units | 48 | 48 |
|---|---|---|
| TMUs | 16 | 4 |
| ROPs | 8 | 4 |
| SM count | 6 | 1 |
| Cache L2 | 32 KB | 256 KB |
| Cache L1 | — | 64 KB (per SM) |
Performance
| Pixel rate | 3.800 GPixel/s | 1.400 GPixel/s |
|---|---|---|
| Texture rate | 7.600 GTexel/s | 2.800 GTexel/s |
| FP32 (float) performance | 105.6 GFLOPS | 134.4 GFLOPS |
| FP64 (double) performance | — | 11.20 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 168 mm 6.6 inches | 145 mm 5.7 inches |
| TDP | 25 W | 50 W |
| Suggested PSU | 200 W | 250 W |
| Outputs | 1x DVI1x HDMI1x VGA | 1x DVI1x HDMI1x VGA |
| Power connectors | — | None |
| Board number | — | P1071 |
API Support & Features
| DirectX | 11.1 (10_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| CUDA | 1.2 | 2.1 |
| Shader model | 4.1 | 5.1 |
