In terms of overall gaming performance, the graphical capabilities of the R9 M485X and the R9 M395X are equal.

The R9 M485X and the R9 M395X have both the same core clock speed and the same Texture Fill Rate. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The R9 M485X and the R9 M395X have both the same core clock speed and the same Pixel Fill Rate. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R9 M485X was released less than a year after the R9 M395X, and so they are likely to have similar driver support for optimizing performance 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 Radeon R9 M485X 4GB and the Radeon R9 M395X 4GB 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 Radeon R9 M485X 4GB and the Radeon R9 M395X 4GB are the same, which means the R9 M485X and the R9 M395X have equal limitations when it comes to graphical data transfer.

Both the Radeon R9 M485X 4GB and the Radeon R9 M395X 4GB have 2048 Shader Processing Units. Having the same number of SPUs and using the same architecture means that the performance they offer can be compared by looking at the memory bandwidth, Texture and Pixel Rates. In this case, the two GPUs have extremely similar stats, so any gaming performance difference would most likely be negligible.

The Radeon R9 M485X 4GB requires 125 Watts to run and the Radeon R9 M395X 4GB requires 125 Watts. The two GPUs require the same amount of wattage to run. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.