NVIDIA GeForce 8800M GTS vs NVIDIA GeForce GT 420M
Graphics Processor
| GPU model | G92 | GF108 |
|---|---|---|
| GPU variant | NB8E-GT-A2 | N11P-GE-A1 |
| Architecture | Tesla | Fermi |
| Foundry | TSMC | TSMC |
| Manufacturing process | 65 nm | 40 nm |
| Number of transistors | 754 million | 585 million |
| Die size | 324 mm² | 116 mm² |
Mobile graphics
| Release date | Nov 1st, 2007 | Sep 3rd, 2010 |
|---|---|---|
| Generation | GeForce 8M (8000M) | GeForce 400M |
| Production | End-of-life | End-of-life |
| Interface | MXM-HE | PCIe 2.0 x16 |
| Predecessor | GeForce Go 7 | GeForce 300M |
| Successor | GeForce 9M | GeForce 500M |
Clocks
| GPU clock | 500 MHz | 500 MHz |
|---|---|---|
| Shader clock | 1250 MHz | 1000 MHz |
| Memory clock | 800 MHz 1600 Mbps effective | 800 MHz 1600 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 256 bit | 128 bit |
| Bandwidth | 51.20 GB/s | 25.60 GB/s |
Render Configuration
| Shading units | 64 | 96 |
|---|---|---|
| TMUs | 32 | 16 |
| ROPs | 16 | 4 |
| SM count | 8 | 2 |
| Cache L2 | 64 KB | 256 KB |
| Cache L1 | — | 64 KB (per SM) |
Performance
| Pixel rate | 8.000 GPixel/s | 2.000 GPixel/s |
|---|---|---|
| Texture rate | 16.00 GTexel/s | 8.000 GTexel/s |
| FP32 (float) performance | 160.0 GFLOPS | 192.0 GFLOPS |
| FP64 (double) performance | — | 16.00 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | MXM Module | — |
|---|---|---|
| TDP | 50 W | 23 W |
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 11.1 (10_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| CUDA | 1.1 | 2.1 |
| Shader model | 4.0 | 5.1 |
