GeForce RTX 3080 12 GB vs Radeon HD 4890 1GB

Intro

Compare all of that to the Radeon HD 4890 1GB, which has a core clock speed of 1000 MHz and a GDDR5 memory speed of 975 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4890 1GB		190 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 160 Watts (84%)

Memory Bandwidth

Theoretically, the GeForce RTX 3080 12 GB should perform quite a bit faster than the Radeon HD 4890 1GB overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 4890 1GB		124800 MB/sec
	Difference: 809498 (649%)

Texel Rate

The GeForce RTX 3080 12 GB will be quite a bit (approximately 782%) better at anisotropic filtering than the Radeon HD 4890 1GB. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 4890 1GB		40000 Mtexels/sec
	Difference: 312800 (782%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce RTX 3080 12 GB is superior to the Radeon HD 4890 1GB, and very much so. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 4890 1GB		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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 texture map elements (texels) that are 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 this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels 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 number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.