ATI Radeon HD 3870 vs Intel HD Graphics 615
Graphics Processor
| GPU model | RV670 | Kaby Lake GT2 |
|---|---|---|
| GPU variant | RV670 XT (215-0708005) | — |
| Architecture | TeraScale | Generation 9.5 |
| Foundry | TSMC | Intel |
| Manufacturing process | 55 nm | 14 nm++ |
| Number of transistors | 666 million | unknown |
| Die size | 192 mm² | unknown |
Graphics Card
| Release date | Nov 19th, 2007 | — |
|---|---|---|
| Generation | Radeon R600 | — |
| Production | End-of-life | — |
| Launch price | 269 USD | — |
| Interface | PCIe 2.0 x16 | — |
| Reviews | 80 in our database | — |
| Predecessor | Radeon R500 PCIe | — |
| Successor | Radeon R700 | — |
Clocks
| GPU clock | 777 MHz | — |
|---|---|---|
| Memory clock | 1126 MHz 2.3 Gbps effective | System Shared |
| Base clock | — | 300 MHz |
| Boost clock | — | 850 MHz |
Memory Configuration
| Memory size | 512 MB | System Shared |
|---|---|---|
| Memory type | GDDR4 | System Shared |
| Memory bus width | 256 bit | System Shared |
| Bandwidth | 72.06 GB/s | System Dependent |
Render Configuration
| Shading units | 320 | 192 |
|---|---|---|
| TMUs | 16 | 24 |
| ROPs | 16 | 3 |
| Compute units | 4 | — |
| Cache L2 | 256 KB | — |
| Execution units | — | 24 |
Performance
| Pixel rate | 12.43 GPixel/s | 2.550 GPixel/s |
|---|---|---|
| Texture rate | 12.43 GTexel/s | 20.40 GTexel/s |
| FP32 (float) performance | 497.3 GFLOPS | 326.4 GFLOPS |
| FP64 (double) performance | 99.46 GFLOPS (1:5) | 81.60 GFLOPS (1:4) |
| FP16 (half) performance | — | 652.8 GFLOPS (2:1) |
Dimensions & Outputs
| Slot width | Dual-slot | IGP |
|---|---|---|
| Length | 241 mm 9.5 inches | — |
| TDP | 106 W | 5 W |
| Suggested PSU | 300 W | — |
| Outputs | 2x DVI1x S-Video | No outputs |
| Power connectors | 1x 6-pin | — |
| Board number | B339 | — |
API Support & Features
| DirectX | 10.1 (10_1) | 12 (12_1) |
|---|---|---|
| OpenGL | 3.3 (full) 4.0 (partial) | 4.6 |
| OpenCL | — | 3.0 |
| Vulkan | — | 1.2 |
| Shader model | 4.1 | 6.4 |
Other Features
Integrated Graphics
| Release date | — | Aug 30th, 2016 |
|---|---|---|
| Generation | — | HD Graphics-M (Kaby Lake) |
| Production | — | Active |
| Interface | — | Ring Bus |
| Reviews | — | 1 in our database |
