Radeon HD 7870 XT vs Radeon RX 6750 XT

Intro

Compare those specifications to the Radeon RX 6750 XT, which has clock speeds of 2150 MHz on the GPU, and 2250 MHz on the 12288 MB of GDDR6 RAM. It features 2560 SPUs along with 160 TAUs and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT		185 Watts
Radeon RX 6750 XT		250 Watts
	Difference: 65 Watts (35%)

Memory Bandwidth

The Radeon RX 6750 XT, in theory, should perform quite a bit faster than the Radeon HD 7870 XT in general. (explain)

Radeon RX 6750 XT		442368 MB/sec
Radeon HD 7870 XT		192000 MB/sec
	Difference: 250368 (130%)

Texel Rate

The Radeon RX 6750 XT is quite a bit (about 287%) better at AF than the Radeon HD 7870 XT. (explain)

Radeon RX 6750 XT		344000 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 255200 (287%)

Pixel Rate

The Radeon RX 6750 XT should be quite a bit (approximately 365%) more effective at anti-aliasing than the Radeon HD 7870 XT, and also will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 6750 XT		137600 Mpixels/sec
Radeon HD 7870 XT		29600 Mpixels/sec
	Difference: 108000 (365%)

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: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video 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 maximum number of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.