Radeon R9 M290X vs Radeon RX 470 4GB

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X		100 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 20 Watts (20%)

Memory Bandwidth

As far as performance goes, the Radeon RX 470 4GB should theoretically be a lot better than the Radeon R9 M290X overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon R9 M290X		153600 MB/sec
	Difference: 57600 (38%)

Texel Rate

The Radeon RX 470 4GB should be quite a bit (approximately 74%) faster with regards to texture filtering than the Radeon R9 M290X. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon R9 M290X		68000 Mtexels/sec
	Difference: 50528 (74%)

Pixel Rate

The Radeon RX 470 4GB will be a small bit (more or less 9%) better at FSAA than the Radeon R9 M290X, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon R9 M290X		27200 Mpixels/sec
	Difference: 2432 (9%)

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 largest amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 its local memory in a second - measured in millions of pixels per second. The figure is worked out 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 fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.