Radeon HD 5870 vs Radeon R7 M260

Intro

Compare all of that to the Radeon R7 M260, which features GPU core speed of 715 MHz, and 2048 MB of DDR3 RAM running at 1000 MHz through a 64-bit bus. It also is made up of 384 Stream Processors, 24 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 is 860% quicker than the Radeon R7 M260 in general, due to its greater bandwidth. (explain)

Radeon HD 5870		153600 MB/sec
Radeon R7 M260		16000 MB/sec
	Difference: 137600 (860%)

Texel Rate

The Radeon HD 5870 is a lot (approximately 296%) better at texture filtering than the Radeon R7 M260. (explain)

Radeon HD 5870		68000 Mtexels/sec
Radeon R7 M260		17160 Mtexels/sec
	Difference: 50840 (296%)

Pixel Rate

The Radeon HD 5870 should be much (approximately 376%) better at FSAA than the Radeon R7 M260, and capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 5870		27200 Mpixels/sec
Radeon R7 M260		5720 Mpixels/sec
	Difference: 21480 (376%)

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

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.