Radeon HD 3470 512MB vs Radeon R9 M385X

Intro

Compare all of that to the Radeon R9 M385X, which makes use of a 28 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 memory works at a speed of 1500 MHz on this specific card. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M385X is 216% quicker than the Radeon HD 3470 512MB overall, due to its greater bandwidth. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon HD 3470 512MB		30400 MB/sec
	Difference: 65600 (216%)

Texel Rate

The Radeon R9 M385X should be much (approximately 1825%) better at anisotropic filtering than the Radeon HD 3470 512MB. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon HD 3470 512MB		3200 Mtexels/sec
	Difference: 58400 (1825%)

Pixel Rate

The Radeon R9 M385X will be quite a bit (about 450%) faster with regards to anti-aliasing than the Radeon HD 3470 512MB, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon HD 3470 512MB		3200 Mpixels/sec
	Difference: 14400 (450%)

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 maximum amount of data (in units of MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.