The NVIDIA GeForce GTS 450 is a mid-range graphics card released in 2010. It is based on NVIDIA's FERMI architecture and uses GF106 cores. There is no graphics card called the NVIDIA GeForce GTX 450, and there may be cases where it is mistakenly called the GTX 450, in fact, the model number of this graphics card should be GTS 450.
The performance of the GTS 450 was quite good for the time, especially for the mid-range market. It supports DirectX 11 and has a certain degree of CUDA parallel processing, which makes it perform well on some computing tasks as well. However, due to its positioning in the mid-range market, it's not designed for the highest-end gaming experiences or the most demanding graphics workloads.
In terms of gaming performance, the GTS 450 was able to run most of the games of the time smoothly at medium settings. However, it can be a bit overwhelming for demanding games, especially at high resolutions and high quality settings.
As graphics technology continues to evolve over time, so does the need for graphics power for new games and applications. So, while the GTS 450 was a decent graphics card when it was released, it may no longer be able to meet the requirements of some of the latest games and apps.