GeForce RTX 2070 Super vs Radeon HD 7870

Intro

Compare that to the Radeon HD 7870, which features GPU core speed of 1000 MHz, and 2048 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also is comprised of 1280 Stream Processors, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870		175 Watts
GeForce RTX 2070 Super		215 Watts
	Difference: 40 Watts (23%)

Memory Bandwidth

Performance-wise, the GeForce RTX 2070 Super should in theory be a lot better than the Radeon HD 7870 overall. (explain)

GeForce RTX 2070 Super		458752 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 305152 (199%)

Texel Rate

The GeForce RTX 2070 Super should be a lot (more or less 221%) better at anisotropic filtering than the Radeon HD 7870. (explain)

GeForce RTX 2070 Super		256800 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 176800 (221%)

Pixel Rate

The GeForce RTX 2070 Super should be much (about 221%) faster with regards to AA than the Radeon HD 7870, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce RTX 2070 Super		102720 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 70720 (221%)

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 in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 are processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock 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 many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.