AMD Radeon HD 6490M Mac Edition vs NVIDIA GeForce 7900 GX2
Graphics Processor
| GPU model | Seymour | G71 |
|---|---|---|
| GPU variant | Seymour XTX (216-0810005) | — |
| Architecture | TeraScale 2 | Curie |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 90 nm |
| Number of transistors | 370 million | 278 million |
| Die size | 67 mm² | 196 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 | 500 MHz |
|---|---|---|
| Memory clock | 794 MHz 3.2 Gbps effective | 600 MHz 1200 Mbps effective |
Memory Configuration
| Memory size | 256 MB | 512 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR3 |
| Memory bus width | 64 bit | 256 bit |
| Bandwidth | 25.41 GB/s | 38.40 GB/s |
Render Configuration
| Shading units | 160 | — |
|---|---|---|
| TMUs | 8 | 24 |
| ROPs | 4 | 16 |
| Compute units | 2 | — |
| Cache L1 | 8 KB (per CU) | — |
| Cache L2 | 128 KB | — |
| Pixel shaders | — | 24 |
| Vertex shaders | — | 8 |
Performance
| Pixel rate | 3.000 GPixel/s | 8.000 GPixel/s |
|---|---|---|
| Texture rate | 6.000 GTexel/s | 12.00 GTexel/s |
| FP32 (float) performance | 240.0 GFLOPS | — |
| Vertex rate | — | 1.000 GVertices/s |
Dimensions & Outputs
| TDP | unknown | 110 W |
|---|---|---|
| Outputs | No outputs | 2x DVI1x S-Video |
| Slot width | — | Dual-slot |
| Length | — | 312 mm 12.3 inches |
| Suggested PSU | — | 300 W |
| Power connectors | — | 2x 6-pin |
| Board number | — | P278, P378 |
API Support & Features
| DirectX | 11.2 (11_0) | 9.0c (9_3) |
|---|---|---|
| OpenGL | 4.4 | 2.1 |
| OpenCL | 1.2 | — |
| Vulkan | — | — |
| Shader model | 5.0 | 3.0 |
Other Features
Graphics Card
| Release date | — | Apr 30th, 2006 |
|---|---|---|
| Generation | — | GeForce 7 PCIe |
| Production | — | End-of-life |
| Launch price | — | 599 USD |
| Interface | — | PCIe 1.0 x16 |
| Reviews | — | 145 in our database |
| Predecessor | — | GeForce 6 PCIe |
| Successor | — | GeForce 8 |
