NVIDIA GeForce GT 420M vs NVIDIA GeForce GTX 260M
Graphics Processor
| GPU model | GF108 | G92 |
|---|---|---|
| GPU variant | N11P-GE-A1 | N10E-GT |
| Architecture | Fermi | Tesla |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 65 nm |
| Number of transistors | 585 million | 754 million |
| Die size | 116 mm² | 324 mm² |
Mobile graphics
| Release date | Sep 3rd, 2010 | Mar 3rd, 2009 |
|---|---|---|
| Generation | GeForce 400M | GeForce 200M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Predecessor | GeForce 300M | GeForce 100M |
| Successor | GeForce 500M | GeForce 300M |
Clocks
| GPU clock | 500 MHz | 550 MHz |
|---|---|---|
| Shader clock | 1000 MHz | 1375 MHz |
| Memory clock | 800 MHz 1600 Mbps effective | 950 MHz 1900 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 1024 MB |
|---|---|---|
| Memory type | DDR3 | GDDR3 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 25.60 GB/s | 60.80 GB/s |
Render Configuration
| Shading units | 96 | 112 |
|---|---|---|
| TMUs | 16 | 56 |
| ROPs | 4 | 16 |
| SM count | 2 | 14 |
| Cache L1 | 64 KB (per SM) | — |
| Cache L2 | 256 KB | 64 KB |
Performance
| Pixel rate | 2.000 GPixel/s | 8.800 GPixel/s |
|---|---|---|
| Texture rate | 8.000 GTexel/s | 30.80 GTexel/s |
| FP32 (float) performance | 192.0 GFLOPS | 308.0 GFLOPS |
| FP64 (double) performance | 16.00 GFLOPS (1:12) | — |
Dimensions & Outputs
| TDP | 23 W | 65 W |
|---|---|---|
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 12 (11_0) | 11.1 (10_0) |
|---|---|---|
| OpenGL | 4.6 | 3.3 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| CUDA | 2.1 | 1.1 |
| Shader model | 5.1 | 4.0 |
