Radeon R9 Fury X vs Radeon R9 M390X

Intro

Compare those specifications to the Radeon R9 M390X, which comes with core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
Radeon R9 Fury X		275 Watts
	Difference: 150 Watts (120%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 Fury X should be quite a bit faster than the Radeon R9 M390X overall. (explain)

Radeon R9 Fury X		512000 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 352000 (220%)

Texel Rate

The Radeon R9 Fury X will be quite a bit (more or less 190%) better at anisotropic filtering than the Radeon R9 M390X. (explain)

Radeon R9 Fury X		268800 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 176256 (190%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 Fury X is superior to the Radeon R9 M390X, by a large margin. (explain)

Radeon R9 Fury X		67200 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 44064 (190%)

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 max amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that are processed per second. This figure 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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