GeForce RTX 2080 vs Radeon HD 7870

Intro

Compare all of that to the Radeon HD 7870, which features a GPU core clock speed of 1000 MHz, and 2048 MB of GDDR5 memory running at 1200 MHz through a 256-bit bus. It also is made up of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce RTX 2080		26155 points
Radeon HD 7870		6230 points
	Difference: 19925 (320%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870		175 Watts
GeForce RTX 2080		215 Watts
	Difference: 40 Watts (23%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 2080 should in theory be a lot superior to the Radeon HD 7870 in general. (explain)

GeForce RTX 2080		458752 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 305152 (199%)

Texel Rate

The GeForce RTX 2080 will be quite a bit (more or less 248%) more effective at texture filtering than the Radeon HD 7870. (explain)

GeForce RTX 2080		278760 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 198760 (248%)

Pixel Rate

The GeForce RTX 2080 will be quite a bit (approximately 203%) faster with regards to anti-aliasing than the Radeon HD 7870, and able to handle higher screen resolutions better. (explain)

GeForce RTX 2080		96960 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 64960 (203%)

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 maximum amount of data (measured in MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends 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 max fill rate.