AMD Radeon HD 7550M vs NVIDIA GeForce GT 425M
Graphics Processor
| GPU model | Thames | GF108 |
|---|---|---|
| GPU variant | Thames LP | N11P-GS-A1 |
| Architecture | TeraScale 2 | Fermi |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 40 nm |
| Number of transistors | 716 million | 585 million |
| Die size | 104 mm² | 116 mm² |
Mobile graphics
| Release date | Jan 7th, 2012 | Sep 3rd, 2010 |
|---|---|---|
| Generation | London (HD 7500M) | GeForce 400M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Predecessor | Vancouver | GeForce 300M |
| Successor | Solar System | GeForce 500M |
Clocks
| Base clock | 450 MHz | — |
|---|---|---|
| Boost clock | 550 MHz | — |
| Memory clock | 900 MHz 1800 Mbps effective | 800 MHz 1600 Mbps effective |
| GPU clock | — | 560 MHz |
| Shader clock | — | 1120 MHz |
Memory Configuration
| Memory size | 1024 MB | 1024 MB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 14.40 GB/s | 25.60 GB/s |
Render Configuration
| Shading units | 400 | 96 |
|---|---|---|
| TMUs | 20 | 16 |
| ROPs | 8 | 4 |
| Compute units | 5 | — |
| SM count | — | 2 |
| Cache L1 | — | 64 KB (per SM) |
| Cache L2 | — | 256 KB |
Performance
| Pixel rate | 4.400 GPixel/s | 2.240 GPixel/s |
|---|---|---|
| Texture rate | 11.00 GTexel/s | 8.960 GTexel/s |
| FP32 (float) performance | 440.0 GFLOPS | 215.0 GFLOPS |
| FP64 (double) performance | — | 17.92 GFLOPS (1:12) |
Dimensions & Outputs
| TDP | 14 W | 23 W |
|---|---|---|
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 11.2 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | — | — |
| Shader model | 5.0 | 5.1 |
| CUDA | — | 2.1 |
