NVIDIA GeForce GT 640M vs NVIDIA GeForce GTX 550 Ti
Graphics Processor
| GPU model | GK107 | GF116 |
|---|---|---|
| GPU variant | N13P-GS | GF116-400-A1 |
| Architecture | Kepler | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 1,270 million | 1,170 million |
| Die size | 118 mm² | 238 mm² |
Mobile graphics
| Release date | Mar 22nd, 2012 | — |
|---|---|---|
| Generation | GeForce 600M | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x16 | — |
| Reviews | 2 in our database | — |
| Predecessor | GeForce 500M | — |
| Successor | GeForce 700M | — |
Clocks
| GPU clock | 625 MHz | 900 MHz |
|---|---|---|
| Memory clock | 900 MHz 1800 Mbps effective | 1026 MHz 4.1 Gbps effective |
| Shader clock | — | 1800 MHz |
Memory Configuration
| Memory size | 2 GB | 1024 MB |
|---|---|---|
| Memory type | DDR3 | GDDR5 |
| Memory bus width | 128 bit | 192 bit |
| Bandwidth | 28.80 GB/s | 98.50 GB/s |
Render Configuration
| Shading units | 384 | 192 |
|---|---|---|
| TMUs | 32 | 32 |
| ROPs | 16 | 24 |
| SMX count | 2 | — |
| Cache L1 | 16 KB (per SMX) | 64 KB (per SM) |
| Cache L2 | 256 KB | 384 KB |
| SM count | — | 4 |
Performance
| Pixel rate | 5.000 GPixel/s | 7.200 GPixel/s |
|---|---|---|
| Texture rate | 20.00 GTexel/s | 28.80 GTexel/s |
| FP32 (float) performance | 480.0 GFLOPS | 691.2 GFLOPS |
| FP64 (double) performance | 20.00 GFLOPS (1:24) | 57.60 GFLOPS (1:12) |
Dimensions & Outputs
| TDP | 32 W | 116 W |
|---|---|---|
| Outputs | No outputs | 2x DVI1x mini-HDMI |
| Slot width | — | Dual-slot |
| Length | — | 210 mm 8.3 inches |
| Suggested PSU | — | 300 W |
| Power connectors | — | 1x 6-pin |
| Board number | — | P1050 |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 1.1 |
| Vulkan | 1.1 | — |
| CUDA | 3.0 | 2.1 |
| Shader model | 5.1 | 5.1 |
Other Features
Graphics Card
| Release date | — | Mar 15th, 2011 |
|---|---|---|
| Generation | — | GeForce 500 |
| Production | — | End-of-life |
| Launch price | — | 149 USD |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 62 in our database |
| Predecessor | — | GeForce 400 |
| Successor | — | GeForce 600 |
