Radeon R9 Fury X vs Radeon R9 M290X

Intro

Compare those specs to the Radeon R9 M290X, which uses a 28 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 memory is set to run at a frequency of 1200 MHz on this particular model. It features 1280 SPUs as well as 80 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X		100 Watts
Radeon R9 Fury X		275 Watts
	Difference: 175 Watts (175%)

Memory Bandwidth

In theory, the Radeon R9 Fury X is 233% faster than the Radeon R9 M290X overall, due to its higher bandwidth. (explain)

Radeon R9 Fury X		512000 MB/sec
Radeon R9 M290X		153600 MB/sec
	Difference: 358400 (233%)

Texel Rate

The Radeon R9 Fury X is quite a bit (about 295%) more effective at anisotropic filtering than the Radeon R9 M290X. (explain)

Radeon R9 Fury X		268800 Mtexels/sec
Radeon R9 M290X		68000 Mtexels/sec
	Difference: 200800 (295%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 Fury X is superior to the Radeon R9 M290X, by a large margin. (explain)

Radeon R9 Fury X		67200 Mpixels/sec
Radeon R9 M290X		27200 Mpixels/sec
	Difference: 40000 (147%)

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 data (in units of MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.