GeForce RTX 3080 12 GB vs Geforce GTX 770

Intro

Compare all of that to the Geforce GTX 770, which comes with clock speeds of 1046 MHz on the GPU, and 1753 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs along with 128 Texture Address Units and 32 ROPs.

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

Theoretically speaking, the GeForce RTX 3080 12 GB should be 316% faster than the Geforce GTX 770 in general, due to its greater data rate. (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 quite a bit (more or less 164%) more effective at AF 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

If running with a high resolution is important to you, then the GeForce RTX 3080 12 GB is a better choice, by a large margin. (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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR memory, the result should 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. 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 fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.