While a GT730 would be more of a match for that generation/age of PCs, and would stiff out the bottleneck, it wouldn't perform very well. You can add a new GPU, but it would bottleneck. A good bit, in all reality, but you'd still have the advantages of a decent GPU. One of the main marketing points of the 1050's and 460/550/560 is for the whole 'plug and play' deal. You can slap it in, and it will work, granted you have drivers installed. However, you'll be left with a bottleneck.