Radeon R9 M275X vs Radeon RX 470 4GB

Intro

Compare all of that to the Radeon RX 470 4GB, which features clock speeds of 926 MHz on the GPU, and 1650 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 70 Watts (140%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 4GB should be 193% faster than the Radeon R9 M275X overall, due to its greater bandwidth. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 139200 (193%)

Texel Rate

The Radeon RX 470 4GB will be much (about 229%) faster with regards to AF than the Radeon R9 M275X. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon R9 M275X		36000 Mtexels/sec
	Difference: 82528 (229%)

Pixel Rate

The Radeon RX 470 4GB is much (approximately 106%) more effective at AA than the Radeon R9 M275X, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon R9 M275X		14400 Mpixels/sec
	Difference: 15232 (106%)

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 (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should 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 amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units of the card 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.