In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660 Ti 3-way SLI are significantly better than the AMD Radeon RX 470 4GB.

The RX 470 has a 11 MHz higher core clock speed than the GTX 660 Ti, but the GTX 660 Ti has 208 more Texture Mapping Units than the RX 470. As a result, the GTX 660 Ti exhibits a 188.9 GTexel/s better Texture Fill Rate than the RX 470. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The RX 470 has a 11 MHz higher core clock speed than the GTX 660 Ti, but the GTX 660 Ti has 40 more Render Output Units than the RX 470. As a result, the GTX 660 Ti exhibits a 36.3 GPixel/s better Pixel Fill Rate than the RX 470. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The RX 470 was released over three years more recently than the GTX 660 Ti, and so the RX 470 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GTX 660 Ti 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 660 Ti has 2048 MB more video memory than the RX 470, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 660 Ti also has superior memory performance overall.

The GTX 660 Ti has 221.4 GB/sec greater memory bandwidth than the RX 470, which means that the memory performance of the GTX 660 Ti is massively better than the RX 470.

The Radeon RX 470 4GB has 2048 Shader Processing Units and the GeForce GTX 660 Ti 3-way SLI has 4032. However, the actual shader performance of the RX 470 is 2470 and the actual shader performance of the GTX 660 Ti is 3951. The GTX 660 Ti having 1481 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 660 Ti delivers a massively smoother and more efficient experience when processing graphical data than the RX 470.

The RX 470 transistor size technology is 14 nm (nanometers) smaller than the GTX 660 Ti. This means that the RX 470 is expected to run slightly cooler and achieve higher clock frequencies than the GTX 660 Ti.

The Radeon RX 470 4GB requires 120 Watts to run and the GeForce GTX 660 Ti 3-way SLI requires 450 Watts. We would recommend a PSU with at least 450 Watts for the RX 470. The GTX 660 Ti requires 330 Watts more than the RX 470 to run. The difference is significant enough that the GTX 660 Ti may have an adverse affect on your yearly electricity bills in comparison to the RX 470.