Radeon R7 M260X vs Radeon R9 390X 8G

Intro

Compare those specifications to the Radeon R9 390X 8G, which features core speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 RAM. It features 2816 SPUs as well as 176 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 390X 8G should be much faster than the Radeon R7 M260X in general. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon R7 M260X		64000 MB/sec
	Difference: 320000 (500%)

Texel Rate

The Radeon R9 390X 8G will be quite a bit (approximately 833%) better at AF than the Radeon R7 M260X. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon R7 M260X		19800 Mtexels/sec
	Difference: 165000 (833%)

Pixel Rate

The Radeon R9 390X 8G should be much (more or less 918%) faster with regards to AA than the Radeon R7 M260X, and also capable of handling higher resolutions better. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon R7 M260X		6600 Mpixels/sec
	Difference: 60600 (918%)

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 largest amount of data (measured in MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. 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 memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video 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 can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.