In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 960 Ti 4GB are significantly better than the Nvidia GeForce GTX 950 LP MSI OC v3 2GB Edition.

The GTX 950 has a 26 MHz higher core clock speed than the GTX 960 Ti, but the GTX 960 Ti has 48 more Texture Mapping Units than the GTX 950. As a result, the GTX 960 Ti exhibits a 49.2 GTexel/s better Texture Fill Rate than the GTX 950. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 950 has a 26 MHz higher core clock speed than the GTX 960 Ti, but the GTX 960 Ti has 32 more Render Output Units than the GTX 950. As a result, the GTX 960 Ti exhibits a 32.8 GPixel/s better Pixel Fill Rate than the GTX 950. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GTX 950 was released less than a year after the GTX 960 Ti, and so they are likely to have similar driver support for optimizing performance when running the latest games.

Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.

The GTX 960 Ti has 2048 MB more video memory than the GTX 950, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 960 Ti also has superior memory performance overall.

The GTX 960 Ti has 118.6 GB/sec greater memory bandwidth than the GTX 950, which means that the memory performance of the GTX 960 Ti is massively better than the GTX 950.

The GeForce GTX 950 LP MSI OC v3 2GB Edition has 768 Shader Processing Units and the GeForce GTX 960 Ti 4GB has 1536. However, the actual shader performance of the GTX 950 is 1299 and the actual shader performance of the GTX 960 Ti is 1809. The GTX 960 Ti having 510 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 960 Ti delivers a massively smoother and more efficient experience when processing graphical data than the GTX 950.

The GeForce GTX 950 LP MSI OC v3 2GB Edition requires 75 Watts to run and the GeForce GTX 960 Ti 4GB requires 140 Watts. We would recommend a PSU with at least 350 Watts for the GTX 950 and a PSU with at least 450 Watts for the GTX 960 Ti. The GTX 960 Ti requires 65 Watts more than the GTX 950 to run. The difference is significant enough that the GTX 960 Ti may have an adverse affect on your yearly electricity bills in comparison to the GTX 950.