GeForce GTX 650 Ti 2GB vs GeForce RTX 2080 Ti

Intro

Compare those specs to the GeForce RTX 2080 Ti, which makes use of a 12 nm design. nVidia has set the core speed at 1350 MHz. The GDDR6 memory runs at a frequency of 1750 MHz on this specific model. It features 4352 SPUs as well as 272 TAUs and 88 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
GeForce RTX 2080 Ti		250 Watts
	Difference: 140 Watts (127%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 2080 Ti is 630% quicker than the GeForce GTX 650 Ti 2GB in general, due to its greater bandwidth. (explain)

GeForce RTX 2080 Ti		630784 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 544384 (630%)

Texel Rate

The GeForce RTX 2080 Ti is much (more or less 518%) faster with regards to AF than the GeForce GTX 650 Ti 2GB. (explain)

GeForce RTX 2080 Ti		367200 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 307808 (518%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce RTX 2080 Ti is the winner, by a large margin. (explain)

GeForce RTX 2080 Ti		118800 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 103952 (700%)

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 maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.