Radeon HD 7870 vs Radeon R7 M260X

Intro

Compare that to the Radeon R7 M260X, which features core speeds of 825 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 memory. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 7870 will be 140% faster than the Radeon R7 M260X in general, due to its higher data rate. (explain)

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

Texel Rate

The Radeon HD 7870 is much (approximately 304%) faster with regards to texture filtering than the Radeon R7 M260X. (explain)

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

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 7870 is superior to the Radeon R7 M260X, by far. (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: Memory bandwidth is the max amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of 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.