In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 470 Golden Sample Edition are massively better than the Nvidia Quadro K620.

The Quadro K620 has a 17 MHz higher core clock speed than the GTX 470, but the GTX 470 has 24 more Texture Mapping Units than the Quadro K620. As a result, the GTX 470 exhibits a 15.1 GTexel/s better Texture Fill Rate than the Quadro K620. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The Quadro K620 has a 17 MHz higher core clock speed than the GTX 470, but the GTX 470 has 24 more Render Output Units than the Quadro K620. As a result, the GTX 470 exhibits a 15.3 GPixel/s better Pixel Fill Rate than the Quadro K620. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The Quadro K620 was released over three years more recently than the GTX 470, and so the Quadro K620 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GTX 470 when running the latest games.

The GTX 470 has 256 MB more video memory than the Quadro K620, so is likely to be slightly better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 470 also has superior memory performance overall.

The GTX 470 has 107.2 GB/sec greater memory bandwidth than the Quadro K620, which means that the memory performance of the GTX 470 is massively better than the Quadro K620.

The Quadro K620 has 384 Shader Processing Units and the GeForce GTX 470 Golden Sample Edition has 448. However, the actual shader performance of the Quadro K620 is 346 and the actual shader performance of the GTX 470 is 582. The GTX 470 having 236 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 470 delivers a massively smoother and more efficient experience when processing graphical data than the Quadro K620.

The Quadro K620 transistor size technology is 12 nm (nanometers) smaller than the GTX 470. This means that the Quadro K620 is expected to run slightly cooler and achieve higher clock frequencies than the GTX 470.

The Quadro K620 requires 45 Watts to run and the GeForce GTX 470 Golden Sample Edition requires 215 Watts. We would recommend a PSU with at least 350 Watts for the Quadro K620 and a PSU with at least 550 Watts for the GTX 470. The GTX 470 requires 170 Watts more than the Quadro K620 to run. The difference is significant enough that the GTX 470 may have an adverse affect on your yearly electricity bills in comparison to the Quadro K620.