Radeon R9 295X2 vs Radeon RX 6800

Intro

Compare all of that to the Radeon RX 6800, which makes use of a 7 nm design. AMD has set the core speed at 1700 MHz. The GDDR6 memory runs at a speed of 2000 MHz on this card. It features 3840 SPUs along with 240 Texture Address Units and 96 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6800		250 Watts
Radeon R9 295X2		500 Watts
	Difference: 250 Watts (100%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 295X2 will be 22% faster than the Radeon RX 6800 overall, because of its higher bandwidth. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon RX 6800		524288 MB/sec
	Difference: 115712 (22%)

Texel Rate

The Radeon RX 6800 should be a little bit (more or less 14%) better at texture filtering than the Radeon R9 295X2. (explain)

Radeon RX 6800		408000 Mtexels/sec
Radeon R9 295X2		358336 Mtexels/sec
	Difference: 49664 (14%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6800 is superior to the Radeon R9 295X2, and very much so. (explain)

Radeon RX 6800		163200 Mpixels/sec
Radeon R9 295X2		130304 Mpixels/sec
	Difference: 32896 (25%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, 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 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 number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 potential to get to the max fill rate.