Soon we'll see the launch of the NVIDIA GeForce MX330 and MX350, two new options for the entry-level market. VideoCardz sums up the latest news and leaks about these GPUs and concludes the MX 350 is about 30 percent faster than the current-gen MX 250. The MX 350 is based on the GP107 die of the GTX 1050, while the MX 330 uses the GP108.
The MX300 series are not for gaming, due to limited memory bandwidth they struggle with high-resolution textures, it is said by reviewers that you are better off buying upcoming GTX 16 SUPER Mobile series as they are expected to feature GDDR6 memory. A non-SUPER series is also a good option as they have a wider memory bus. You could also wait for the future MX series as explained in the next paragraph.
There are also whispers that NVIDIA is working on a new entry-level card based on the Turing TU117 GPU. This model is expected in the second half of the year, around the same time that Intel will debut its Xe "DG1" discrete mobile video card. Codenamed "N18S-G5", this may be the first MX series card with GDDR6 memory.