Radeon HD 3470 256MB vs Radeon R7 M260

Intro

Compare those specifications to the Radeon R7 M260, which comes with clock speeds of 715 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 384 SPUs along with 24 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3470 256MB should be much faster than the Radeon R7 M260 in general. (explain)

Radeon HD 3470 256MB		30400 MB/sec
Radeon R7 M260		16000 MB/sec
	Difference: 14400 (90%)

Texel Rate

The Radeon R7 M260 is quite a bit (approximately 436%) more effective at anisotropic filtering than the Radeon HD 3470 256MB. (explain)

Radeon R7 M260		17160 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 13960 (436%)

Pixel Rate

The Radeon R7 M260 should be much (more or less 79%) better at full screen anti-aliasing than the Radeon HD 3470 256MB, and also will be capable of handling higher resolutions while still performing well. (explain)

Radeon R7 M260		5720 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 2520 (79%)

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 max amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 can be applied per second. This number is calculated by multiplying the total amount of texture units 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 applied per second.

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