Radeon HD 7870 vs Radeon RX 6750 XT

Intro

Compare those specs to the Radeon RX 6750 XT, which features a GPU core clock speed of 2150 MHz, and 12288 MB of GDDR6 memory set to run at 2250 MHz through a 192-bit bus. It also features 2560 Stream Processors, 160 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870		175 Watts
Radeon RX 6750 XT		250 Watts
	Difference: 75 Watts (43%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6750 XT should perform a lot faster than the Radeon HD 7870 overall. (explain)

Radeon RX 6750 XT		442368 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 288768 (188%)

Texel Rate

The Radeon RX 6750 XT will be quite a bit (approximately 330%) more effective at AF than the Radeon HD 7870. (explain)

Radeon RX 6750 XT		344000 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 264000 (330%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6750 XT is the winner, by a large margin. (explain)

Radeon RX 6750 XT		137600 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 105600 (330%)

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 (counted in MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.