GeForce GT 555M 3 GB vs GTX 660M Mac Edition
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1021 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 2.26 | no data |
| Architecture | Kepler (2012−2018) | Fermi (2010−2014) |
| GPU code name | GK107 | GF106 |
| Market segment | Laptop | Laptop |
| Release date | 1 April 2013 (12 years ago) | 24 March 2011 (14 years 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 | 384 | 144 |
| Core clock speed | 950 MHz | 590 MHz |
| Number of transistors | 1,270 million | 1,170 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 50 Watt | 35 Watt |
| Texture fill rate | 30.40 | 14.16 |
| Floating-point processing power | 0.7296 TFLOPS | 0.3398 TFLOPS |
| ROPs | 16 | 24 |
| TMUs | 32 | 24 |
| L1 Cache | 32 KB | 192 KB |
| L2 Cache | 256 KB | 384 KB |
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).
| Interface | MXM-B (3.0) | PCIe 2.0 x16 |
| Supplementary power connectors | None | None |
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 | DDR3 |
| Maximum RAM amount | 512 MB | 3 GB |
| Memory bus width | 128 Bit | 192 Bit |
| Memory clock speed | 1250 MHz | 900 MHz |
| Memory bandwidth | 80 GB/s | 43.2 GB/s |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | No outputs | Portable Device Dependent |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.1.126 | N/A |
| CUDA | 3.0 | 2.1 |
Pros & cons summary
| Recency | 1 April 2013 | 24 March 2011 |
| Maximum RAM amount | 512 MB | 3 GB |
| Chip lithography | 28 nm | 40 nm |
| Power consumption (TDP) | 50 Watt | 35 Watt |
GTX 660M Mac Edition has an age advantage of 2 years, and a 42.9% more advanced lithography process.
GT 555M 3 GB, on the other hand, has a 500% higher maximum VRAM amount, and 42.9% lower power consumption.
We couldn't decide between GeForce GTX 660M Mac Edition and GeForce GT 555M 3 GB. We've got no test results to judge.
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