AMD Radeon HD 6490M Mac Edition vs ATI Radeon HD 5550
Graphics Processor
| GPU model | Seymour | Redwood |
|---|---|---|
| GPU variant | Seymour XTX (216-0810005) | Redwood PRO2 |
| Architecture | TeraScale 2 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 40 nm |
| Number of transistors | 370 million | 627 million |
| Die size | 67 mm² | 104 mm² |
Mobile graphics
| Release date | May 2nd, 2011 | — |
|---|---|---|
| Generation | Vancouver (HD 6400M) | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
| Predecessor | Manhattan | — |
| Successor | London | — |
Clocks
| GPU clock | 750 MHz | 550 MHz |
|---|---|---|
| Memory clock | 794 MHz 3.2 Gbps effective | 800 MHz 3.2 Gbps effective |
Memory Configuration
| Memory size | 256 MB | 512 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 25.41 GB/s | 51.20 GB/s |
Render Configuration
| Shading units | 160 | 320 |
|---|---|---|
| TMUs | 8 | 16 |
| ROPs | 4 | 8 |
| Compute units | 2 | 4 |
| Cache L1 | 8 KB (per CU) | 8 KB (per CU) |
| Cache L2 | 128 KB | 256 KB |
Performance
| Pixel rate | 3.000 GPixel/s | 4.400 GPixel/s |
|---|---|---|
| Texture rate | 6.000 GTexel/s | 8.800 GTexel/s |
| FP32 (float) performance | 240.0 GFLOPS | 352.0 GFLOPS |
Dimensions & Outputs
| TDP | unknown | 39 W |
|---|---|---|
| Outputs | No outputs | 1x DVI1x HDMI1x VGA |
| Slot width | — | Single-slot |
| Length | — | 165 mm 6.5 inches |
| Suggested PSU | — | 200 W |
| Power connectors | — | None |
| Board number | — | C021, C025, C029 |
API Support & Features
| DirectX | 11.2 (11_0) | 11.2 (11_0) |
|---|---|---|
| OpenGL | 4.4 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | — | — |
| Shader model | 5.0 | 5.0 |
Other Features
Graphics Card
| Release date | — | Feb 9th, 2010 |
|---|---|---|
| Generation | — | Evergreen |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 29 in our database |
| Predecessor | — | Radeon R700 |
| Successor | — | Northern Islands |
