ATI Radeon HD 3870 X2 vs Intel HD Graphics 620
Graphics Processor
| GPU model | R680 | Kaby Lake GT2 |
|---|---|---|
| GPU variant | R680 XT (215-0708017) | — |
| 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 | Jan 26th, 2008 | — |
|---|---|---|
| Generation | Radeon R600 | — |
| Production | End-of-life | — |
| Launch price | 449 USD | — |
| Interface | PCIe 2.0 x16 | — |
| Reviews | 72 in our database | — |
| Predecessor | Radeon R500 PCIe | — |
| Successor | Radeon R700 | — |
Clocks
| GPU clock | 825 MHz | — |
|---|---|---|
| Memory clock | 901 MHz 1802 Mbps effective | System Shared |
| Base clock | — | 300 MHz |
| Boost clock | — | 1000 MHz |
Memory Configuration
| Memory size | 512 MB | System Shared |
|---|---|---|
| Memory type | GDDR3 | System Shared |
| Memory bus width | 256 bit | System Shared |
| Bandwidth | 57.66 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 | 13.20 GPixel/s | 3.000 GPixel/s |
|---|---|---|
| Texture rate | 13.20 GTexel/s | 24.00 GTexel/s |
| FP32 (float) performance | 528.0 GFLOPS | 384.0 GFLOPS |
| FP64 (double) performance | 105.6 GFLOPS (1:5) | 96.00 GFLOPS (1:4) |
| FP16 (half) performance | — | 768.0 GFLOPS (2:1) |
Dimensions & Outputs
| Slot width | Dual-slot | IGP |
|---|---|---|
| Length | 267 mm 10.5 inches | — |
| Width | 113 mm 4.4 inches | — |
| Height | 39 mm 1.5 inches | — |
| TDP | 165 W | 15 W |
| Suggested PSU | 450 W | — |
| Outputs | 2x DVI1x S-Video | No outputs |
| Power connectors | 1x 6-pin + 1x 8-pin | — |
| Board number | B400 | — |
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 |
