Radeon HD 7870 vs Radeon R7 M260X

Intro

Compare those specs to the Radeon R7 M260X, which has GPU clock speed of 825 MHz, and 2048 MB of GDDR5 RAM running at 1000 MHz through a 128-bit bus. It also features 384 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 7870 should theoretically perform quite a bit faster than the Radeon R7 M260X in general. (explain)

Radeon HD 7870		153600 MB/sec
Radeon R7 M260X		64000 MB/sec
	Difference: 89600 (140%)

Texel Rate

The Radeon HD 7870 should be a lot (more or less 304%) more effective at anisotropic filtering than the Radeon R7 M260X. (explain)

Radeon HD 7870		80000 Mtexels/sec
Radeon R7 M260X		19800 Mtexels/sec
	Difference: 60200 (304%)

Pixel Rate

The Radeon HD 7870 is much (about 385%) faster with regards to full screen anti-aliasing than the Radeon R7 M260X, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 7870		32000 Mpixels/sec
Radeon R7 M260X		6600 Mpixels/sec
	Difference: 25400 (385%)

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 information (measured in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.