Radeon R9 M395X vs Radeon RX 6800

Intro

Compare all that to the Radeon RX 6800, which comes with clock speeds of 1700 MHz on the GPU, and 2000 MHz on the 16384 MB of GDDR6 RAM. It features 3840 SPUs as well as 240 Texture Address Units and 96 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Radeon RX 6800		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

In theory, the Radeon RX 6800 should be 228% quicker than the Radeon R9 M395X overall, due to its greater bandwidth. (explain)

Radeon RX 6800		524288 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 364288 (228%)

Texel Rate

The Radeon RX 6800 should be much (approximately 341%) better at texture filtering than the Radeon R9 M395X. (explain)

Radeon RX 6800		408000 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 315456 (341%)

Pixel Rate

The Radeon RX 6800 is quite a bit (more or less 605%) faster with regards to full screen anti-aliasing than the Radeon R9 M395X, and also will be capable of handling higher resolutions while still performing well. (explain)

Radeon RX 6800		163200 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 140064 (605%)

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 maximum amount of information (measured in MB per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that are applied in one second. This number 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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 - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.