AMD Radeon HD 7470M vs ATI Radeon HD 3850
Graphics Processor
| GPU model | Seymour | RV670 |
|---|---|---|
| GPU variant | Seymour XT (216-0810084) | RV670 PRO (215-0708003) |
| Architecture | TeraScale 2 | TeraScale |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 55 nm |
| Number of transistors | 370 million | 666 million |
| Die size | 67 mm² | 192 mm² |
Mobile graphics
| Release date | Jan 7th, 2012 | — |
|---|---|---|
| Generation | London (HD 7400M) | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
| Predecessor | Vancouver | — |
| Successor | Solar System | — |
Clocks
| Base clock | 750 MHz | — |
|---|---|---|
| Boost clock | 800 MHz | — |
| Memory clock | 900 MHz 1800 Mbps effective | 830 MHz 1660 Mbps effective |
| GPU clock | — | 668 MHz |
Memory Configuration
| Memory size | 1024 MB | 512 MB |
|---|---|---|
| Memory type | DDR3 | GDDR3 |
| Memory bus width | 64 bit | 256 bit |
| Bandwidth | 14.40 GB/s | 53.12 GB/s |
Render Configuration
| Shading units | 160 | 320 |
|---|---|---|
| TMUs | 8 | 16 |
| ROPs | 4 | 16 |
| Compute units | 2 | 4 |
| Cache L1 | 8 KB (per CU) | — |
| Cache L2 | 128 KB | 256 KB |
Performance
| Pixel rate | 3.200 GPixel/s | 10.69 GPixel/s |
|---|---|---|
| Texture rate | 6.400 GTexel/s | 10.69 GTexel/s |
| FP32 (float) performance | 256.0 GFLOPS | 427.5 GFLOPS |
| FP64 (double) performance | — | 85.50 GFLOPS (1:5) |
Dimensions & Outputs
| TDP | 25 W | 75 W |
|---|---|---|
| Outputs | No outputs | 2x DVI1x S-Video |
| Slot width | — | Single-slot |
| Length | — | 208 mm 8.2 inches |
| Suggested PSU | — | 250 W |
| Power connectors | — | 1x 6-pin |
| Board number | — | B340, B400 |
API Support & Features
| DirectX | 11.2 (11_0) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 4.4 | 3.3 (full) 4.0 (partial) |
| OpenCL | 1.2 | — |
| Vulkan | — | — |
| Shader model | 5.0 | 4.1 |
Other Features
Graphics Card
| Release date | — | Nov 19th, 2007 |
|---|---|---|
| Generation | — | Radeon R600 |
| Production | — | End-of-life |
| Launch price | — | 179 USD |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 71 in our database |
| Predecessor | — | Radeon R500 PCIe |
| Successor | — | Radeon R700 |
