ATI Radeon HD 4890 vs Intel Iris Plus Graphics 645
Graphics Processor
| GPU model | RV790 | Coffee Lake GT3e |
|---|---|---|
| GPU variant | RV790 XT (215-0758016) | — |
| Architecture | TeraScale | Generation 9.5 |
| Foundry | TSMC | Intel |
| Manufacturing process | 55 nm | 14 nm+++ |
| Number of transistors | 959 million | unknown |
| Die size | 282 mm² | unknown |
Graphics Card
| Release date | Apr 2nd, 2009 | — |
|---|---|---|
| Generation | Radeon R700 | — |
| Production | End-of-life | — |
| Launch price | 249 USD | — |
| Interface | PCIe 2.0 x16 | — |
| Reviews | 114 in our database | — |
| Predecessor | Radeon R600 | — |
| Successor | Evergreen | — |
Clocks
| GPU clock | 850 MHz | — |
|---|---|---|
| Memory clock | 975 MHz 3.9 Gbps effective | System Shared |
| Base clock | — | 300 MHz |
| Boost clock | — | 1050 MHz |
Memory Configuration
| Memory size | 1024 MB | System Shared |
|---|---|---|
| Memory type | GDDR5 | System Shared |
| Memory bus width | 256 bit | System Shared |
| Bandwidth | 124.8 GB/s | System Dependent |
Render Configuration
| Shading units | 800 | 384 |
|---|---|---|
| TMUs | 40 | 48 |
| ROPs | 16 | 6 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 256 KB | — |
| Execution units | — | 48 |
Performance
| Pixel rate | 13.60 GPixel/s | 6.300 GPixel/s |
|---|---|---|
| Texture rate | 34.00 GTexel/s | 50.40 GTexel/s |
| FP32 (float) performance | 1,360 GFLOPS | 806.4 GFLOPS |
| FP64 (double) performance | 272.0 GFLOPS (1:5) | 201.6 GFLOPS (1:4) |
| FP16 (half) performance | — | 1.613 TFLOPS (2:1) |
Dimensions & Outputs
| Slot width | Dual-slot | IGP |
|---|---|---|
| Length | 241 mm 9.5 inches | — |
| Width | 111 mm 4.4 inches | — |
| Height | 40 mm 1.6 inches | — |
| TDP | 190 W | 15 W |
| Suggested PSU | 450 W | — |
| Outputs | 2x DVI1x S-Video | No outputs |
| Power connectors | 2x 6-pin | — |
| Board number | B790-31 | — |
API Support & Features
| DirectX | 10.1 (10_1) | 12 (12_1) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 3.0 |
| Vulkan | — | 1.2 |
| Shader model | 4.1 | 6.4 |
Other Features
Integrated Graphics
| Release date | — | Oct 7th, 2019 |
|---|---|---|
| Generation | — | HD Graphics-M (Coffee Lake) |
| Production | — | Active |
| Interface | — | Ring Bus |
| Reviews | — | 1 in our database |
