GeForce GTX 680MX Mac Edition vs GT 745M
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 790 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 4.38 | no data |
| Architecture | Kepler (2012−2018) | Kepler (2012−2018) |
| GPU code name | GK107 | GK104 |
| Market segment | Laptop | Laptop |
| Release date | 1 April 2013 (11 years ago) | 23 October 2012 (12 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 | 1536 |
| Core clock speed | 549 MHz | 719 MHz |
| Number of transistors | 1,270 million | 3,540 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 45 Watt | 122 Watt |
| Texture fill rate | 17.57 | 92.03 |
| Floating-point processing power | 0.4216 TFLOPS | 2.209 TFLOPS |
| ROPs | 16 | 32 |
| TMUs | 32 | 128 |
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 | medium sized | no data |
| Bus support | PCI Express 3.0 | no data |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
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 | GDDR5 |
| Maximum RAM amount | 2 GB | 2 GB |
| Standard memory configuration | DDR3/GDDR5 | no data |
| Memory bus width | 128 Bit | 256 Bit |
| Memory clock speed | 1000 MHz | 1250 MHz |
| Memory bandwidth | 64 GB/s | 160.0 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 | No outputs | No outputs |
| eDP 1.2 signal support | Up to 3840x2160 | no data |
| LVDS signal support | Up to 1920x1200 | no data |
| VGA аnalog display support | Up to 2048x1536 | no data |
| DisplayPort Multimode (DP++) support | Up to 3840x2160 | no data |
| HDMI | + | - |
| HDCP content protection | + | - |
| 7.1 channel HD audio on HDMI | + | - |
| TrueHD and DTS-HD audio bitstreaming | + | - |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| Blu-Ray 3D Support | + | - |
| H.264, VC1, MPEG2 1080p video decoder | + | - |
| Optimus | + | - |
| 3D Vision / 3DTV Play | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 API | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.5 | 4.6 |
| OpenCL | 1.1 | 1.2 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | + | 3.0 |
Pros & cons summary
| Recency | 1 April 2013 | 23 October 2012 |
| Power consumption (TDP) | 45 Watt | 122 Watt |
GT 745M has an age advantage of 5 months, and 171.1% lower power consumption.
We couldn't decide between GeForce GT 745M and GeForce GTX 680MX Mac Edition. We've got no test results to judge.
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.
