GeForce RTX 3080 Ti vs Geforce GTX 780

Intro

Compare all of that to the Geforce GTX 780, which makes use of a 28 nm design. nVidia has clocked the core speed at 863 MHz. The GDDR5 memory is set to run at a speed of 1502 MHz on this particular model. It features 2304 SPUs as well as 192 TAUs and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 780		250 Watts
GeForce RTX 3080 Ti		350 Watts
	Difference: 100 Watts (40%)

Memory Bandwidth

In theory, the GeForce RTX 3080 Ti will be 224% quicker than the Geforce GTX 780 in general, because of its higher data rate. (explain)

GeForce RTX 3080 Ti		934297 MB/sec
Geforce GTX 780		288384 MB/sec
	Difference: 645913 (224%)

Texel Rate

The GeForce RTX 3080 Ti is much (about 164%) faster with regards to texture filtering than the Geforce GTX 780. (explain)

GeForce RTX 3080 Ti		436800 Mtexels/sec
Geforce GTX 780		165696 Mtexels/sec
	Difference: 271104 (164%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce RTX 3080 Ti is superior to the Geforce GTX 780, by a large margin. (explain)

GeForce RTX 3080 Ti		152880 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 111456 (269%)

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 data (measured in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 can be applied 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 video card will be at handling 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 that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.