GeForce RTX 2080 vs Radeon HD 7870

Intro

Compare those specifications to the Radeon HD 7870, which comes with a GPU core clock speed of 1000 MHz, and 2048 MB of GDDR5 memory set to run 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

The GeForce RTX 2080 should in theory be much faster than the Radeon HD 7870 overall. (explain)

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

Texel Rate

The GeForce RTX 2080 should be much (about 248%) faster with regards to 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

If using lots of anti-aliasing is important to you, then the GeForce RTX 2080 is superior to the Radeon HD 7870, by far. (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: Memory bandwidth is the max amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 can be processed in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.