GeForce RTX 3080 12 GB vs Radeon HD 7950

Intro

Compare all that to the Radeon HD 7950, which features a GPU core clock speed of 800 MHz, and 1536 MB of GDDR5 RAM running at 1250 MHz through a 384-bit bus. It also is made up of 1792 SPUs, 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		200 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 150 Watts (75%)

Memory Bandwidth

The GeForce RTX 3080 12 GB should in theory be much faster than the Radeon HD 7950 in general. (explain)

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

Texel Rate

The GeForce RTX 3080 12 GB will be quite a bit (approximately 294%) faster with regards to anisotropic filtering than the Radeon HD 7950. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the GeForce RTX 3080 12 GB is superior to the Radeon HD 7950, by far. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 7950		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: Bandwidth is the max amount of information (in units of MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 processed in one second. This figure is worked out by multiplying the total texture units of the card 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 figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.