GeForce RTX 4080 Mobile vs GTX 660 Rev. 2
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 27 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 41.25 |
| Architecture | Kepler (2012−2018) | Ada Lovelace (2022−2024) |
| GPU code name | GK104 | AD104 |
| Market segment | Desktop | Laptop |
| Release date | 13 September 2014 (10 years ago) | 3 January 2023 (1 year ago) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 960 | 7424 |
| Core clock speed | 980 MHz | 1290 MHz |
| Boost clock speed | 1032 MHz | 1665 MHz |
| Number of transistors | 3,540 million | 35,800 million |
| Manufacturing process technology | 28 nm | 4 nm |
| Power consumption (TDP) | 140 Watt | 110 Watt |
| Texture fill rate | 82.56 | 386.3 |
| Floating-point processing power | 1.981 TFLOPS | 24.72 TFLOPS |
| ROPs | 24 | 80 |
| TMUs | 80 | 232 |
| Tensor Cores | no data | 232 |
| Ray Tracing Cores | no data | 58 |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Laptop size | no data | large |
| Interface | PCIe 3.0 x16 | PCIe 4.0 x16 |
| Length | 241 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 1x 6-pin | no data |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | GDDR5 | GDDR6 |
| Maximum RAM amount | 2 GB | 12 GB |
| Memory bus width | 192 Bit | 192 Bit |
| Memory clock speed | 1502 MHz | 2250 MHz |
| Memory bandwidth | 144.2 GB/s | 432.0 GB/s |
| Shared memory | - | - |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | 2x DVI, 1x HDMI, 1x DisplayPort | Portable Device Dependent |
| HDMI | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.7 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | 1.1.126 | 1.3 |
| CUDA | 3.0 | 8.9 |
Pros & cons summary
| Recency | 13 September 2014 | 3 January 2023 |
| Maximum RAM amount | 2 GB | 12 GB |
| Chip lithography | 28 nm | 4 nm |
| Power consumption (TDP) | 140 Watt | 110 Watt |
RTX 4080 Mobile has an age advantage of 8 years, a 500% higher maximum VRAM amount, a 600% more advanced lithography process, and 27.3% lower power consumption.
We couldn't decide between GeForce GTX 660 Rev. 2 and GeForce RTX 4080 Mobile. We've got no test results to judge.
Be aware that GeForce GTX 660 Rev. 2 is a desktop card while GeForce RTX 4080 Mobile is a notebook one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
