NVIDIA GeForce 840M vs NVIDIA GeForce RTX 3080
Graphics Processor
| GPU model | GM108 | GA102 |
|---|---|---|
| GPU variant | N15S-GT | GA102-200-KD-A1 |
| Architecture | Maxwell | Ampere |
| Foundry | TSMC | Samsung |
| Manufacturing process | 28 nm | 8 nm |
| Number of transistors | unknown | 28,300 million |
| Die size | unknown | 628 mm² |
Mobile graphics
| Release date | Mar 12th, 2014 | — |
|---|---|---|
| Generation | GeForce 800M | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x8 | — |
| Predecessor | GeForce 700M | — |
| Successor | GeForce 900M | — |
Clocks
| Base clock | 1029 MHz | 1440 MHz |
|---|---|---|
| Boost clock | 1124 MHz | 1710 MHz |
| Memory clock | 1001 MHz 2 Gbps effective | 1188 MHz 19 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 10 GB |
|---|---|---|
| Memory type | DDR3 | GDDR6X |
| Memory bus width | 64 bit | 320 bit |
| Bandwidth | 16.02 GB/s | 760.3 GB/s |
Render Configuration
| Shading units | 384 | 8704 |
|---|---|---|
| TMUs | 16 | 272 |
| ROPs | 8 | 96 |
| SMM count | 3 | — |
| Cache L1 | 64 KB (per SMM) | 128 KB (per SM) |
| Cache L2 | 1024 KB | 5 MB |
| SM count | — | 68 |
| Tensor cores | — | 272 |
| RT cores | — | 68 |
Performance
| Pixel rate | 8.992 GPixel/s | 164.2 GPixel/s |
|---|---|---|
| Texture rate | 17.98 GTexel/s | 465.1 GTexel/s |
| FP32 (float) performance | 863.2 GFLOPS | 29.77 TFLOPS |
| FP64 (double) performance | 26.98 GFLOPS (1:32) | 465.1 GFLOPS (1:64) |
| FP16 (half) performance | — | 29.77 TFLOPS (1:1) |
Dimensions & Outputs
| Slot width | IGP | Dual-slot |
|---|---|---|
| TDP | 33 W | 320 W |
| Outputs | No outputs | 1x HDMI3x DisplayPort |
| Length | — | 285 mm 11.2 inches |
| Suggested PSU | — | 700 W |
| Power connectors | — | 1x 12-pin |
| Board number | — | PG132 SKU 30 |
| Width | — | 112 mm 4.4 inches |
| Height | — | 40 mm 1.6 inches |
API Support & Features
| DirectX | 12 (11_0) | 12 Ultimate (12_2) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.1 | 1.2 |
| CUDA | 5.0 | 8.6 |
| Shader model | 5.1 | 6.6 |
Other Features
Graphics Card
| Release date | — | Sep 1st, 2020 |
|---|---|---|
| Generation | — | GeForce 30 |
| Production | — | Active |
| Launch price | — | 699 USD |
| Interface | — | PCIe 4.0 x16 |
| gpu.details.availability | — | Sep 17th, 2020 |
| Predecessor | — | GeForce 20 |
| Current price | — | Amazon / Newegg |
| Reviews | — | 99 in our database |
