Radeon R9 M395X vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which comes with clock speeds of 926 MHz on the GPU, and 1650 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 RX 470 4GB		120 Watts
Radeon R9 M395X		125 Watts
	Difference: 5 Watts (4%)

Memory Bandwidth

Performance-wise, the Radeon RX 470 4GB should theoretically be a lot superior to the Radeon R9 M395X overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 51200 (32%)

Texel Rate

The Radeon RX 470 4GB will be a lot (more or less 28%) better at anisotropic filtering than the Radeon R9 M395X. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 25984 (28%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 470 4GB is a better choice, and very much so. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 6496 (28%)

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 information (in units of megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per 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 - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.