Radeon R9 M395X vs Radeon RX 570

Intro

Compare those specifications to the Radeon RX 570, which has a GPU core clock speed of 1168 MHz, and 4096 MB of GDDR5 RAM running at 1750 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Radeon RX 570		150 Watts
	Difference: 25 Watts (20%)

Memory Bandwidth

In theory, the Radeon RX 570 should be 43% quicker than the Radeon R9 M395X overall, due to its greater data rate. (explain)

Radeon RX 570		229376 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 69376 (43%)

Texel Rate

The Radeon RX 570 is quite a bit (more or less 62%) better at AF than the Radeon R9 M395X. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 56960 (62%)

Pixel Rate

The Radeon RX 570 should be a lot (more or less 62%) faster with regards to anti-aliasing than the Radeon R9 M395X, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 14240 (62%)

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 information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out 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 filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.