GeForce RTX 3080 12 GB vs Radeon HD 6770

Intro

Compare that to the Radeon HD 6770, which comes with a GPU core clock speed of 900 MHz, and 512 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also is comprised of 800 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 242 Watts (224%)

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB should be 1290% quicker than the Radeon HD 6770 overall, due to its higher data rate. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 867098 (1290%)

Texel Rate

The GeForce RTX 3080 12 GB will be much (about 880%) more effective at AF than the Radeon HD 6770. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 316800 (880%)

Pixel Rate

The GeForce RTX 3080 12 GB is quite a bit (more or less 880%) better at full screen anti-aliasing than the Radeon HD 6770, and also should be able to handle higher resolutions without slowing down too much. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 126720 (880%)

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 transferred past the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video 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 maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.