AMD Radeon HD 6450A vs NVIDIA GeForce 7900 GT
Graphics Processor
| GPU model | Caicos | G71 |
|---|---|---|
| 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 |
| GPU variant | — | G71-GT-N-A2 |
Mobile graphics
| Release date | Apr 7th, 2011 | — |
|---|---|---|
| Generation | All-In-One (HD 6000) | — |
| Production | End-of-life | — |
| Interface | MXM-A (3.0) | — |
Clocks
| GPU clock | 625 MHz | 450 MHz |
|---|---|---|
| Memory clock | 533 MHz 1066 Mbps effective | 660 MHz 1320 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 256 MB |
|---|---|---|
| Memory type | DDR3 | GDDR3 |
| Memory bus width | 64 bit | 256 bit |
| Bandwidth | 8.528 GB/s | 42.24 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 | 2.500 GPixel/s | 7.200 GPixel/s |
|---|---|---|
| Texture rate | 5.000 GTexel/s | 10.80 GTexel/s |
| FP32 (float) performance | 200.0 GFLOPS | — |
| Vertex rate | — | 900.0 MVertices/s |
Dimensions & Outputs
| Slot width | MXM Module | Single-slot |
|---|---|---|
| TDP | 25 W | 48 W |
| Outputs | No outputs | 2x DVI1x S-Video |
| Suggested PSU | — | 200 W |
| Power connectors | — | 1x 6-pin |
| Board number | — | P455 |
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 | — | Mar 9th, 2006 |
|---|---|---|
| Generation | — | GeForce 7 PCIe |
| Production | — | End-of-life |
| Interface | — | PCIe 1.0 x16 |
| Reviews | — | 145 in our database |
| Predecessor | — | GeForce 6 PCIe |
| Successor | — | GeForce 8 |
