ATI Mobility Radeon HD 4670 Mac Edition vs NVIDIA GeForce 705M
Graphics Processor
| GPU model | M96 | GF117 |
|---|---|---|
| GPU variant | M96 XT (216-0729051) | N14M-GL |
| Architecture | TeraScale | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 28 nm |
| Number of transistors | 514 million | 585 million |
| Die size | 146 mm² | 116 mm² |
Mobile graphics
| Release date | Sep 16th, 2009 | Sep 27th, 2013 |
|---|---|---|
| Generation | M9x (Mobility HD 4600) | GeForce 700M |
| Production | End-of-life | End-of-life |
| Interface | MXM-A (3.0) | PCIe 2.0 x16 |
| Reviews | 2 in our database | — |
| Predecessor | M8x | GeForce 600M |
| Successor | Manhattan | GeForce 800M |
Clocks
| GPU clock | 680 MHz | 738 MHz |
|---|---|---|
| Memory clock | 790 MHz 1580 Mbps effective | 900 MHz 1800 Mbps effective |
| Shader clock | — | 1476 MHz |
Memory Configuration
| Memory size | 256 MB | 1024 MB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 25.28 GB/s | 14.40 GB/s |
Render Configuration
| Shading units | 320 | 48 |
|---|---|---|
| TMUs | 32 | 8 |
| ROPs | 8 | 8 |
| Compute units | 4 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 128 KB | 128 KB |
| SM count | — | 1 |
Performance
| Pixel rate | 5.440 GPixel/s | 1.476 GPixel/s |
|---|---|---|
| Texture rate | 21.76 GTexel/s | 5.904 GTexel/s |
| FP32 (float) performance | 435.2 GFLOPS | 141.7 GFLOPS |
| FP64 (double) performance | — | 11.81 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | MXM Module | — |
|---|---|---|
| TDP | 35 W | 15 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 |
