In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 980 Gigabyte G1 Gaming 4GB Edition SLI are marginally better than the Nvidia GeForce GTX 980 MSI Gaming 4GB Edition SLI.

The GTX 980 has a 12 MHz higher core clock speed and the same number of Texture Mapping Units as the GTX 980. This results in the GTX 980 providing 3.1 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 980 has a 12 MHz higher core clock speed than the GTX 980 and the same number of Render Output Units. This results in the GTX 980 providing 1.6 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

Both the GeForce GTX 980 MSI Gaming 4GB Edition SLI and the GeForce GTX 980 Gigabyte G1 Gaming 4GB Edition SLI were released at the same time, so are likely to be quite similar.

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 GeForce GTX 980 MSI Gaming 4GB Edition SLI and the GeForce GTX 980 Gigabyte G1 Gaming 4GB Edition SLI have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The memory bandwidth of the GeForce GTX 980 MSI Gaming 4GB Edition SLI and the GeForce GTX 980 Gigabyte G1 Gaming 4GB Edition SLI are the same, which means the GTX 980 and the GTX 980 have equal limitations when it comes to graphical data transfer.

Both the GeForce GTX 980 MSI Gaming 4GB Edition SLI and the GeForce GTX 980 Gigabyte G1 Gaming 4GB Edition SLI have 4096 Shader Processing Units. While the two GPUs have the same number of SPUs, the actual performance delivered by the GTX 980 is 7349 and by the GTX 980 is 7349. Knowing that the shader performance of the GTX 980 is superior, it is not necessary to examine the GPUs' respective Texture and Pixel Fill Rates.

The GeForce GTX 980 MSI Gaming 4GB Edition SLI requires 340 Watts to run but there is no entry for the GeForce GTX 980 Gigabyte G1 Gaming 4GB Edition SLI. We would recommend a PSU with at least 600 Watts for the GTX 980.