AMD Radeon HD 7550M vs ATI Mobility Radeon HD 4670 Mac Edition
Graphics Processor
| GPU model | Thames | M96 |
|---|---|---|
| GPU variant | Thames LP | M96 XT (216-0729051) |
| Architecture | TeraScale 2 | TeraScale |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 55 nm |
| Number of transistors | 716 million | 514 million |
| Die size | 104 mm² | 146 mm² |
Mobile graphics
| Release date | Jan 7th, 2012 | Sep 16th, 2009 |
|---|---|---|
| Generation | London (HD 7500M) | M9x (Mobility HD 4600) |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | MXM-A (3.0) |
| Predecessor | Vancouver | M8x |
| Successor | Solar System | Manhattan |
| Reviews | — | 2 in our database |
Clocks
| Base clock | 450 MHz | — |
|---|---|---|
| Boost clock | 550 MHz | — |
| Memory clock | 900 MHz 1800 Mbps effective | 790 MHz 1580 Mbps effective |
| GPU clock | — | 680 MHz |
Memory Configuration
| Memory size | 1024 MB | 256 MB |
|---|---|---|
| Memory type | DDR3 | GDDR3 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 14.40 GB/s | 25.28 GB/s |
Render Configuration
| Shading units | 400 | 320 |
|---|---|---|
| TMUs | 20 | 32 |
| ROPs | 8 | 8 |
| Compute units | 5 | 4 |
| Cache L1 | — | 16 KB (per CU) |
| Cache L2 | — | 128 KB |
Performance
| Pixel rate | 4.400 GPixel/s | 5.440 GPixel/s |
|---|---|---|
| Texture rate | 11.00 GTexel/s | 21.76 GTexel/s |
| FP32 (float) performance | 440.0 GFLOPS | 435.2 GFLOPS |
Dimensions & Outputs
| TDP | 14 W | 35 W |
|---|---|---|
| Outputs | No outputs | No outputs |
| Slot width | — | MXM Module |
| Board number | — | B80357 |
API Support & Features
| DirectX | 11.2 (11_0) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 4.4 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | — | — |
| Shader model | 5.0 | 4.1 |
