Radeon R9 M395X vs Radeon RX 460

Intro

Compare those specifications to the Radeon RX 460, which comes with core speeds of 1090 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs as well as 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
Radeon R9 M395X		125 Watts
	Difference: 50 Watts (67%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M395X will be 43% faster than the Radeon RX 460 in general, due to its greater data rate. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon RX 460		112000 MB/sec
	Difference: 48000 (43%)

Texel Rate

The Radeon R9 M395X will be quite a bit (about 52%) more effective at anisotropic filtering than the Radeon RX 460. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon RX 460		61040 Mtexels/sec
	Difference: 31504 (52%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 M395X is superior to the Radeon RX 460, and very much so. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon RX 460		17440 Mpixels/sec
	Difference: 5696 (33%)

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 (in units of MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.