Radeon HD 7870 XT vs Radeon RX 6750 XT

Intro

Compare that to the Radeon RX 6750 XT, which features a core clock frequency of 2150 MHz and a GDDR6 memory speed of 2250 MHz. It also makes use of a 192-bit bus, and makes use of a 7 nm design. It features 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

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 be much faster than the Radeon HD 7870 XT overall. (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 will be a lot (more or less 287%) more effective at texture filtering 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 much (approximately 365%) better at AA than the Radeon HD 7870 XT, and able to handle higher screen resolutions without losing too much performance. (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 maximum amount of data (measured in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 memory bandwidth is, the lower the potential to get to the maximum fill rate.