GeForce GTX 650 vs GeForce RTX 3080 Ti

Intro

Compare all that to the GeForce RTX 3080 Ti, which comes with GPU core speed of 1365 MHz, and 12288 MB of GDDR6X memory set to run at 1188 MHz through a 384-bit bus. It also is comprised of 10240 Stream Processors, 320 TAUs, and 112 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce RTX 3080 Ti		350 Watts
	Difference: 286 Watts (447%)

Memory Bandwidth

Performance-wise, the GeForce RTX 3080 Ti should theoretically be quite a bit better than the GeForce GTX 650 in general. (explain)

GeForce RTX 3080 Ti		934297 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 854297 (1068%)

Texel Rate

The GeForce RTX 3080 Ti is much (approximately 1190%) more effective at anisotropic filtering than the GeForce GTX 650. (explain)

GeForce RTX 3080 Ti		436800 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 402944 (1190%)

Pixel Rate

The GeForce RTX 3080 Ti should be much (more or less 803%) faster with regards to full screen anti-aliasing than the GeForce GTX 650, and also should be able to handle higher screen resolutions more effectively. (explain)

GeForce RTX 3080 Ti		152880 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 135952 (803%)

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 (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.