NVIDIA GeForce 820M vs NVIDIA GeForce GTX 460
Graphics Processor
| GPU model | GF117 | GF104 |
|---|---|---|
| GPU variant | N15V-GM-B-A2 | GF104-300-KB-A1 |
| Architecture | Fermi 2.0 | Fermi |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 585 million | 1,950 million |
| Die size | 116 mm² | 332 mm² |
Mobile graphics
| Release date | Nov 27th, 2013 | — |
|---|---|---|
| Generation | GeForce 800M | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
| Predecessor | GeForce 700M | — |
| Successor | GeForce 900M | — |
Clocks
| GPU clock | 625 MHz | 675 MHz |
|---|---|---|
| Shader clock | 1250 MHz | 1350 MHz |
| Memory clock | 900 MHz 1800 Mbps effective | 900 MHz 3.6 Gbps effective |
Memory Configuration
| Memory size | 1024 MB | 768 MB |
|---|---|---|
| Memory type | DDR3 | GDDR5 |
| Memory bus width | 64 bit | 192 bit |
| Bandwidth | 14.40 GB/s | 86.40 GB/s |
Render Configuration
| Shading units | 96 | 336 |
|---|---|---|
| TMUs | 16 | 56 |
| ROPs | 8 | 24 |
| SM count | 2 | 7 |
| Cache L1 | 64 KB (per SM) | 64 KB (per SM) |
| Cache L2 | 128 KB | 384 KB |
Performance
| Pixel rate | 2.500 GPixel/s | 9.450 GPixel/s |
|---|---|---|
| Texture rate | 10.00 GTexel/s | 37.80 GTexel/s |
| FP32 (float) performance | 240.0 GFLOPS | 907.2 GFLOPS |
| FP64 (double) performance | 20.00 GFLOPS (1:12) | 75.60 GFLOPS (1:12) |
Dimensions & Outputs
| TDP | 15 W | 160 W |
|---|---|---|
| Outputs | No outputs | 2x DVI1x mini-HDMI |
| Slot width | — | Dual-slot |
| Length | — | 210 mm 8.3 inches |
| Suggested PSU | — | 450 W |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| CUDA | 2.1 | 2.1 |
| Shader model | 5.1 | 5.1 |
Other Features
Graphics Card
| Release date | — | Jul 12th, 2010 |
|---|---|---|
| Generation | — | GeForce 400 |
| Production | — | End-of-life |
| Launch price | — | 199 USD |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 154 in our database |
| Predecessor | — | GeForce 200 |
| Successor | — | GeForce 500 |
