GeForce RTX 3080 12 GB vs Geforce GTX 770

Intro

Compare that to the Geforce GTX 770, which features a clock frequency of 1046 MHz and a GDDR5 memory speed of 1753 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770		230 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 120 Watts (52%)

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB should be a lot faster than the Geforce GTX 770 in general. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Geforce GTX 770		224384 MB/sec
	Difference: 709914 (316%)

Texel Rate

The GeForce RTX 3080 12 GB will be a lot (approximately 164%) more effective at texture filtering than the Geforce GTX 770. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Geforce GTX 770		133888 Mtexels/sec
	Difference: 218912 (164%)

Pixel Rate

The GeForce RTX 3080 12 GB is a lot (more or less 322%) faster with regards to full screen anti-aliasing than the Geforce GTX 770, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Geforce GTX 770		33472 Mpixels/sec
	Difference: 107648 (322%)

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 (in units of MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the 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 could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.