AMD Radeon HD 6450 vs ATI Radeon HD 5450 PCI
Graphics Processor
| GPU model | Caicos | Cedar |
|---|---|---|
| GPU variant | Caicos PRO | Cedar PRO |
| Architecture | TeraScale 2 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 40 nm |
| Number of transistors | 370 million | 292 million |
| Die size | 67 mm² | 59 mm² |
Graphics Card
| Release date | Apr 7th, 2011 | Feb 4th, 2010 |
|---|---|---|
| Generation | Northern Islands | Evergreen |
| Production | End-of-life | End-of-life |
| Launch price | 55 USD | — |
| Interface | PCIe 2.0 x16 | PCI |
| Reviews | 14 in our database | 34 in our database |
| Predecessor | Evergreen | Radeon R700 |
| Successor | Southern Islands | Northern Islands |
Clocks
| GPU clock | 625 MHz | 650 MHz |
|---|---|---|
| Memory clock | 800 MHz 3.2 Gbps effective | 333 MHz 666 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR5 | DDR2 |
| Memory bus width | 64 bit | 64 bit |
| Bandwidth | 25.60 GB/s | 5.328 GB/s |
Render Configuration
| Shading units | 160 | 80 |
|---|---|---|
| TMUs | 8 | 8 |
| ROPs | 4 | 4 |
| Compute units | 2 | 2 |
| Cache L1 | 8 KB (per CU) | 8 KB (per CU) |
| Cache L2 | 128 KB | 128 KB |
Performance
| Pixel rate | 2.500 GPixel/s | 2.600 GPixel/s |
|---|---|---|
| Texture rate | 5.000 GTexel/s | 5.200 GTexel/s |
| FP32 (float) performance | 200.0 GFLOPS | 104.0 GFLOPS |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 168 mm 6.6 inches | 145 mm 5.7 inches |
| TDP | 18 W | 19 W |
| Suggested PSU | 200 W | 200 W |
| Outputs | 1x DVI1x HDMI1x VGA | 1x DVI1x HDMI |
| Power connectors | None | None |
| Board number | C264 | C093, C096 |
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 |
