Radeon R9 380X vs Radeon R9 M395X

Intro

Compare all that to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has set the core speed at 723 MHz. The GDDR5 memory runs at a frequency of 1250 MHz on this specific card. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Radeon R9 380X		190 Watts
	Difference: 65 Watts (52%)

Memory Bandwidth

In theory, the Radeon R9 380X should be a little bit faster than the Radeon R9 M395X in general. (explain)

Radeon R9 380X		182400 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 22400 (14%)

Texel Rate

The Radeon R9 380X will be quite a bit (about 34%) better at anisotropic filtering than the Radeon R9 M395X. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 31616 (34%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 380X is a better choice, by a large margin. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 7904 (34%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.