GeForce GT 420 vs GeForce RTX 2080 SUPER

Intro

Compare that to the GeForce RTX 2080 SUPER, which makes use of a 12 nm design. nVidia has set the core frequency at 1650 MHz. The GDDR6 RAM is set to run at a speed of 1937 MHz on this model. It features 3072 SPUs along with 192 TAUs and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420		50 Watts
GeForce RTX 2080 SUPER		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 2080 SUPER should theoretically be a lot better than the GeForce GT 420 in general. (explain)

GeForce RTX 2080 SUPER		507904 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 479104 (1664%)

Texel Rate

The GeForce RTX 2080 SUPER will be much (more or less 5557%) better at texture filtering than the GeForce GT 420. (explain)

GeForce RTX 2080 SUPER		316800 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 311200 (5557%)

Pixel Rate

The GeForce RTX 2080 SUPER will be a lot (about 3671%) better at FSAA than the GeForce GT 420, and also able to handle higher resolutions without losing too much performance. (explain)

GeForce RTX 2080 SUPER		105600 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 102800 (3671%)

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 largest amount of information (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out 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 outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.