GeForce RTX 3080 12 GB vs Radeon HD 7950 3GB

Intro

Compare those specs to the Radeon HD 7950 3GB, which has GPU clock speed of 800 MHz, and 3072 MB of GDDR5 memory running at 1250 MHz through a 384-bit bus. It also is comprised of 1792 Stream Processors, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 3GB		200 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 150 Watts (75%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3080 12 GB should perform a lot faster than the Radeon HD 7950 3GB in general. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 7950 3GB		240000 MB/sec
	Difference: 694298 (289%)

Texel Rate

The GeForce RTX 3080 12 GB should be a lot (about 294%) more effective at AF than the Radeon HD 7950 3GB. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 263200 (294%)

Pixel Rate

The GeForce RTX 3080 12 GB is a lot (approximately 451%) better at AA than the Radeon HD 7950 3GB, and able to handle higher screen resolutions more effectively. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 115520 (451%)

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 information (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 texture units by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.