GeForce RTX 3080 12 GB vs Radeon HD 4890 2GB

Intro

Compare that to the Radeon HD 4890 2GB, which has core speeds of 1000 MHz on the GPU, and 975 MHz on the 2048 MB of GDDR5 RAM. It features 800(160x5) SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4890 2GB		190 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 160 Watts (84%)

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB should be much faster than the Radeon HD 4890 2GB overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 4890 2GB		124800 MB/sec
	Difference: 809498 (649%)

Texel Rate

The GeForce RTX 3080 12 GB is a lot (about 782%) more effective at texture filtering than the Radeon HD 4890 2GB. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 4890 2GB		40000 Mtexels/sec
	Difference: 312800 (782%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce RTX 3080 12 GB is superior to the Radeon HD 4890 2GB, and very much so. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 4890 2GB		16000 Mpixels/sec
	Difference: 125120 (782%)

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 max amount of data (measured in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.