GeForce RTX 3080 12 GB vs Radeon HD 4870 2GB

Intro

Compare that to the Radeon HD 4870 2GB, which uses a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 RAM is set to run at a frequency of 900 MHz on this specific model. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 2GB		150 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 200 Watts (133%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3080 12 GB will be 711% quicker than the Radeon HD 4870 2GB overall, because of its greater bandwidth. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 4870 2GB		115200 MB/sec
	Difference: 819098 (711%)

Texel Rate

The GeForce RTX 3080 12 GB is much (about 1076%) better at texture filtering than the Radeon HD 4870 2GB. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 4870 2GB		30000 Mtexels/sec
	Difference: 322800 (1076%)

Pixel Rate

The GeForce RTX 3080 12 GB is much (more or less 1076%) better at anti-aliasing than the Radeon HD 4870 2GB, and also able to handle higher screen resolutions more effectively. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 4870 2GB		12000 Mpixels/sec
	Difference: 129120 (1076%)

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 largest amount of information (in units of MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's 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 applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.