GeForce RTX 3080 Ti vs Radeon HD 7870 XT

Intro

Compare all that to the Radeon HD 7870 XT, which features GPU core speed of 925 MHz, and 2048 MB of GDDR5 RAM set to run at 1500 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 96 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT		185 Watts
GeForce RTX 3080 Ti		350 Watts
	Difference: 165 Watts (89%)

Memory Bandwidth

The GeForce RTX 3080 Ti, in theory, should be much faster than the Radeon HD 7870 XT overall. (explain)

GeForce RTX 3080 Ti		934297 MB/sec
Radeon HD 7870 XT		192000 MB/sec
	Difference: 742297 (387%)

Texel Rate

The GeForce RTX 3080 Ti is quite a bit (approximately 392%) more effective at AF than the Radeon HD 7870 XT. (explain)

GeForce RTX 3080 Ti		436800 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 348000 (392%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce RTX 3080 Ti is the winner, by far. (explain)

GeForce RTX 3080 Ti		152880 Mpixels/sec
Radeon HD 7870 XT		29600 Mpixels/sec
	Difference: 123280 (416%)

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: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it should 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 applied in one second. This figure is calculated by multiplying the total texture units of the card 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines 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 rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.