ATI Radeon HD 4890 vs NVIDIA GeForce 940MX
Graphics Processor
| GPU model | RV790 | GM107 |
|---|---|---|
| GPU variant | RV790 XT (215-0758016) | N16S-GT1R |
| Architecture | TeraScale | Maxwell |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 28 nm |
| Number of transistors | 959 million | 1,870 million |
| Die size | 282 mm² | 148 mm² |
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 | 1253 MHz 5 Gbps effective |
| Base clock | — | 795 MHz |
| Boost clock | — | 861 MHz |
Memory Configuration
| Memory size | 1024 MB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 256 bit | 64 bit |
| Bandwidth | 124.8 GB/s | 40.10 GB/s |
Render Configuration
| Shading units | 800 | 512 |
|---|---|---|
| TMUs | 40 | 32 |
| ROPs | 16 | 8 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SMM) |
| Cache L2 | 256 KB | 1024 KB |
| SMM count | — | 4 |
Performance
| Pixel rate | 13.60 GPixel/s | 6.888 GPixel/s |
|---|---|---|
| Texture rate | 34.00 GTexel/s | 27.55 GTexel/s |
| FP32 (float) performance | 1,360 GFLOPS | 881.7 GFLOPS |
| FP64 (double) performance | 272.0 GFLOPS (1:5) | 27.55 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | Dual-slot | MXM Module |
|---|---|---|
| Length | 241 mm 9.5 inches | — |
| Width | 111 mm 4.4 inches | — |
| Height | 40 mm 1.6 inches | — |
| TDP | 190 W | 23 W |
| Suggested PSU | 450 W | — |
| Outputs | 2x DVI1x S-Video | No outputs |
| Power connectors | 2x 6-pin | None |
| Board number | B790-31 | — |
API Support & Features
| DirectX | 10.1 (10_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 3.0 |
| Vulkan | — | 1.1 |
| Shader model | 4.1 | 5.1 |
| CUDA | — | 5.0 |
Other Features
Mobile graphics
| Release date | — | Jun 28th, 2016 |
|---|---|---|
| Generation | — | GeForce 900M |
| Production | — | End-of-life |
| Interface | — | PCIe 3.0 x8 |
| Predecessor | — | GeForce 800M |
| Successor | — | GeForce 10 Mobile |
