Radeon HD 6870 vs Radeon R7 M260X

Intro

Compare all of that to the Radeon R7 M260X, which comes with core clock speeds of 825 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 RAM. It features 384 SPUs along with 24 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 6870 should perform quite a bit faster than the Radeon R7 M260X overall. (explain)

Radeon HD 6870		134400 MB/sec
Radeon R7 M260X		64000 MB/sec
	Difference: 70400 (110%)

Texel Rate

The Radeon HD 6870 will be much (about 155%) more effective at texture filtering than the Radeon R7 M260X. (explain)

Radeon HD 6870		50400 Mtexels/sec
Radeon R7 M260X		19800 Mtexels/sec
	Difference: 30600 (155%)

Pixel Rate

The Radeon HD 6870 should be quite a bit (approximately 336%) more effective at AA than the Radeon R7 M260X, and able to handle higher resolutions more effectively. (explain)

Radeon HD 6870		28800 Mpixels/sec
Radeon R7 M260X		6600 Mpixels/sec
	Difference: 22200 (336%)

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: Memory bandwidth is the largest amount of information (measured in MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can 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 colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.