Radeon R9 295X2 vs Radeon RX 6800 XT

Intro

Compare all that to the Radeon RX 6800 XT, which makes use of a 7 nm design. AMD has clocked the core frequency at 1825 MHz. The GDDR6 memory runs at a frequency of 2000 MHz on this particular card. It features 4608 SPUs along with 288 TAUs and 128 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6800 XT		300 Watts
Radeon R9 295X2		500 Watts
	Difference: 200 Watts (67%)

Memory Bandwidth

Performance-wise, the Radeon R9 295X2 should in theory be a lot better than the Radeon RX 6800 XT overall. (explain)

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

Texel Rate

The Radeon RX 6800 XT will be quite a bit (approximately 47%) better at anisotropic filtering than the Radeon R9 295X2. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
Radeon R9 295X2		358336 Mtexels/sec
	Difference: 167264 (47%)

Pixel Rate

The Radeon RX 6800 XT will be quite a bit (more or less 79%) faster with regards to AA than the Radeon R9 295X2, and also will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon RX 6800 XT		233600 Mpixels/sec
Radeon R9 295X2		130304 Mpixels/sec
	Difference: 103296 (79%)

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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.