AMD Radeon 620 Mobile vs ATI Radeon HD 4770
Graphics Processor
| GPU model | Polaris 24 | RV740 |
|---|---|---|
| GPU variant | Polaris 24 XL | RV740 XT (215-0727019) |
| Architecture | GCN 3.0 | TeraScale |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 1,550 million | 826 million |
| Die size | 125 mm² | 137 mm² |
Mobile graphics
| Release date | May 13th, 2019 | — |
|---|---|---|
| Generation | Mobility Radeon (M600) | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x8 | — |
| Predecessor | Crystal System | — |
Clocks
| Base clock | 730 MHz | — |
|---|---|---|
| Boost clock | 1024 MHz | — |
| Memory clock | 900 MHz 1800 Mbps effective | 800 MHz 3.2 Gbps effective |
| GPU clock | — | 750 MHz |
Memory Configuration
| Memory size | 2 GB | 512 MB |
|---|---|---|
| Memory type | DDR3 | GDDR5 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 14.40 GB/s | 51.20 GB/s |
Render Configuration
| Shading units | 384 | 640 |
|---|---|---|
| TMUs | 24 | 32 |
| ROPs | 8 | 16 |
| Compute units | 6 | 8 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 128 KB | 128 KB |
Performance
| Pixel rate | 8.192 GPixel/s | 12.00 GPixel/s |
|---|---|---|
| Texture rate | 24.58 GTexel/s | 24.00 GTexel/s |
| FP16 (half) performance | 786.4 GFLOPS (1:1) | — |
| FP32 (float) performance | 786.4 GFLOPS | 960.0 GFLOPS |
| FP64 (double) performance | 49.15 GFLOPS (1:16) | 192.0 GFLOPS (1:5) |
Dimensions & Outputs
| Slot width | IGP | Dual-slot |
|---|---|---|
| TDP | 50 W | 80 W |
| Outputs | No outputs | 2x DVI1x S-Video |
| Power connectors | None | 1x 6-pin |
| Length | — | 203 mm 8 inches |
| Suggested PSU | — | 250 W |
| Board number | — | B743 |
API Support & Features
| DirectX | 12 (12_0) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 4.6 | 3.3 |
| OpenCL | 2.0 | 1.1 |
| Vulkan | 1.2 | — |
| Shader model | 6.3 | 4.1 |
Other Features
Graphics Card
| Release date | — | Apr 28th, 2009 |
|---|---|---|
| Generation | — | Radeon R700 |
| Production | — | End-of-life |
| Launch price | — | 109 USD |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 82 in our database |
| Predecessor | — | Radeon R600 |
| Successor | — | Evergreen |
