GeForce RTX 3080 12 GB vs Radeon HD 4850 512MB

Intro

Compare all that to the Radeon HD 4850 512MB, which has core speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 512MB		110 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 240 Watts (218%)

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB will be 1370% faster than the Radeon HD 4850 512MB overall, because of its higher data rate. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 4850 512MB		63552 MB/sec
	Difference: 870746 (1370%)

Texel Rate

The GeForce RTX 3080 12 GB is a lot (more or less 1311%) faster with regards to anisotropic filtering than the Radeon HD 4850 512MB. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 4850 512MB		25000 Mtexels/sec
	Difference: 327800 (1311%)

Pixel Rate

The GeForce RTX 3080 12 GB will be quite a bit (approximately 1311%) faster with regards to full screen anti-aliasing than the Radeon HD 4850 512MB, and also capable of handling higher resolutions better. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 4850 512MB		10000 Mpixels/sec
	Difference: 131120 (1311%)

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 (measured in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.