GeForce RTX 3080 12 GB vs Radeon HD 4870 1GB

Intro

Compare all of that to the Radeon HD 4870 1GB, which features a GPU core clock speed of 750 MHz, and 1024 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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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

Theoretically, the GeForce RTX 3080 12 GB should perform quite a bit faster than the Radeon HD 4870 1GB in general. (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 will be a lot (about 1076%) faster with regards to anisotropic filtering 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 resolution is important to you, then the GeForce RTX 3080 12 GB is superior to the Radeon HD 4870 1GB, by a large margin. (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 largest amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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 memory bandwidth is, the lower the ability to get to the max fill rate.