GeForce RTX 3080 12 GB vs Radeon HD 6950 2GB

Intro

Compare that to the Radeon HD 6950 2GB, which features GPU core speed of 800 MHz, and 2048 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also features 1408 SPUs, 88 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 2GB		200 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 150 Watts (75%)

Memory Bandwidth

Performance-wise, the GeForce RTX 3080 12 GB should in theory be quite a bit better than the Radeon HD 6950 2GB in general. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 6950 2GB		160000 MB/sec
	Difference: 774298 (484%)

Texel Rate

The GeForce RTX 3080 12 GB should be a lot (approximately 401%) more effective at AF than the Radeon HD 6950 2GB. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 6950 2GB		70400 Mtexels/sec
	Difference: 282400 (401%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce RTX 3080 12 GB is superior to the Radeon HD 6950 2GB, by a large margin. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 6950 2GB		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 largest amount of information (in units of MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core clock 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.