ATI Mobility Radeon HD 4670 Mac Edition vs NVIDIA GeForce GT 540M
Graphics Processor
| GPU model | M96 | GF108 |
|---|---|---|
| GPU variant | M96 XT (216-0729051) | N12P-GS-A1 |
| Architecture | TeraScale | Fermi |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 40 nm |
| Number of transistors | 514 million | 585 million |
| Die size | 146 mm² | 116 mm² |
Mobile graphics
| Release date | Sep 16th, 2009 | Jan 5th, 2011 |
|---|---|---|
| Generation | M9x (Mobility HD 4600) | GeForce 500M |
| Production | End-of-life | End-of-life |
| Interface | MXM-A (3.0) | MXM-A (3.0) |
| Reviews | 2 in our database | — |
| Predecessor | M8x | GeForce 400M |
| Successor | Manhattan | GeForce 600M |
Clocks
| GPU clock | 680 MHz | 672 MHz |
|---|---|---|
| Memory clock | 790 MHz 1580 Mbps effective | 900 MHz 1800 Mbps effective |
| Shader clock | — | 1344 MHz |
Memory Configuration
| Memory size | 256 MB | 1024 MB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 25.28 GB/s | 28.80 GB/s |
Render Configuration
| Shading units | 320 | 96 |
|---|---|---|
| TMUs | 32 | 16 |
| ROPs | 8 | 4 |
| Compute units | 4 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 128 KB | 256 KB |
| SM count | — | 2 |
Performance
| Pixel rate | 5.440 GPixel/s | 2.688 GPixel/s |
|---|---|---|
| Texture rate | 21.76 GTexel/s | 10.75 GTexel/s |
| FP32 (float) performance | 435.2 GFLOPS | 258.0 GFLOPS |
| FP64 (double) performance | — | 21.50 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | MXM Module | MXM Module |
|---|---|---|
| TDP | 35 W | 35 W |
| Outputs | No outputs | No outputs |
| Board number | B80357 | — |
API Support & Features
| DirectX | 10.1 (10_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| Shader model | 4.1 | 5.1 |
| CUDA | — | 2.1 |
