AMD Radeon R7 240 OEM vs NVIDIA GeForce 820A
Graphics Processor
| GPU model | Oland | GF117 |
|---|---|---|
| Architecture | GCN 1.0 | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 950 million | 585 million |
| Die size | 77 mm² | 116 mm² |
| GPU variant | — | N15V-GM |
Graphics Card
| Release date | Nov 1st, 2013 | — |
|---|---|---|
| Generation | Volcanic Islands | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x8 | — |
| Predecessor | Sea Islands | — |
| Successor | Pirate Islands | — |
Clocks
| Base clock | 730 MHz | — |
|---|---|---|
| Boost clock | 780 MHz | — |
| Memory clock | 900 MHz 1800 Mbps effective | 900 MHz 1800 Mbps effective |
| GPU clock | — | 775 MHz |
| Shader clock | — | 1550 MHz |
Memory Configuration
| Memory size | 2 GB | 1024 MB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 28.80 GB/s | 14.40 GB/s |
Render Configuration
| Shading units | 320 | 96 |
|---|---|---|
| TMUs | 20 | 16 |
| ROPs | 8 | 8 |
| Compute units | 5 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 256 KB | 128 KB |
| SM count | — | 2 |
Performance
| Pixel rate | 6.240 GPixel/s | 3.100 GPixel/s |
|---|---|---|
| Texture rate | 15.60 GTexel/s | 12.40 GTexel/s |
| FP32 (float) performance | 499.2 GFLOPS | 297.6 GFLOPS |
| FP64 (double) performance | 31.20 GFLOPS (1:16) | 24.80 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | Single-slot | — |
|---|---|---|
| TDP | 50 W | 15 W |
| Suggested PSU | 250 W | — |
| Outputs | 1x DVI1x HDMI1x VGA | No outputs |
| Power connectors | None | — |
| Board number | C552 | — |
API Support & Features
| DirectX | 12 (11_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.2 | — |
| Shader model | 5.1 | 5.1 |
| CUDA | — | 2.1 |
Other Features
Mobile graphics
| Release date | — | Mar 17th, 2014 |
|---|---|---|
| Generation | — | GeForce 800A |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Predecessor | — | GeForce 700A |
| Successor | — | GeForce 900A |
