GeForce RTX 3080 12 GB vs Radeon HD 4870 1GB

Intro

Compare those specifications to the Radeon HD 4870 1GB, which uses a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 memory is set to run at a speed of 900 MHz on this specific model. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 1GB		150 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 200 Watts (133%)

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB should perform much faster than the Radeon HD 4870 1GB overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 4870 1GB		115200 MB/sec
	Difference: 819098 (711%)

Texel Rate

The GeForce RTX 3080 12 GB is a lot (about 1076%) faster with regards to AF than the Radeon HD 4870 1GB. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 4870 1GB		30000 Mtexels/sec
	Difference: 322800 (1076%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce RTX 3080 12 GB is a better choice, by far. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 4870 1GB		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: Memory bandwidth is the max amount of data (counted in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

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