AMD Radeon 625 Mobile vs NVIDIA GeForce 840M
Graphics Processor
| GPU model | Polaris 24 | GM108 |
|---|---|---|
| GPU variant | Polaris 24 XT (216-0867030) | N15S-GT |
| Architecture | GCN 3.0 | Maxwell |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 1,550 million | unknown |
| Die size | 125 mm² | unknown |
Mobile graphics
| Release date | May 13th, 2019 | Mar 12th, 2014 |
|---|---|---|
| Generation | Mobility Radeon (M600) | GeForce 800M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x8 | PCIe 3.0 x8 |
| Predecessor | Crystal System | GeForce 700M |
| Successor | — | GeForce 900M |
Clocks
| Base clock | 730 MHz | 1029 MHz |
|---|---|---|
| Boost clock | 1024 MHz | 1124 MHz |
| Memory clock | 900 MHz 1800 Mbps effective | 1001 MHz 2 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 64 bit | 64 bit |
| Bandwidth | 14.40 GB/s | 16.02 GB/s |
Render Configuration
| Shading units | 384 | 384 |
|---|---|---|
| TMUs | 24 | 16 |
| ROPs | 8 | 8 |
| Compute units | 6 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SMM) |
| Cache L2 | 128 KB | 1024 KB |
| SMM count | — | 3 |
Performance
| Pixel rate | 8.192 GPixel/s | 8.992 GPixel/s |
|---|---|---|
| Texture rate | 24.58 GTexel/s | 17.98 GTexel/s |
| FP16 (half) performance | 786.4 GFLOPS (1:1) | — |
| FP32 (float) performance | 786.4 GFLOPS | 863.2 GFLOPS |
| FP64 (double) performance | 49.15 GFLOPS (1:16) | 26.98 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | IGP | IGP |
|---|---|---|
| TDP | 50 W | 33 W |
| Outputs | No outputs | No outputs |
| Power connectors | None | — |
API Support & Features
| DirectX | 12 (12_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 3.0 |
| Vulkan | 1.2 | 1.1 |
| Shader model | 6.3 | 5.1 |
| CUDA | — | 5.0 |
