This sample from MSI has the “A” designation which Nvidia has binned and will allow for factory overclocks.

We can see in the specifications table below that the GTX 1660 Super uses the TU116-300 core. We’ll run through some of the new features Nvidia is introducing through their GeForce Game-ready drivers and see how the “improved” GTX 1660 Super compares to its siblings. Nvidia has sent us MSI’s GTX 1660 Super Gaming for testing today. The GTX 1650 Super, on the other hand, gets a significant boost to the core count from 896 to 1280 CUDA cores and an upgrade to 4 GB of GDDR6 as well. The new GTX 1660 Super features the addition of GDDR6 memory with the same CUDA core count as the original GTX 1660. We’re expecting some price adjustments on those models as well. These new cards also introduce a new price point that is lower than their predecessors. Available today is the Nvidia GeForce GTX 1660 Super and the GTX 1650 Super will be launching on November 22nd. Today Nvidia is unveiling additional “Super” cards extending the Super line into their GTX models.

Msi overclocking software