GeForce GT 420 vs Radeon RX 5500 XT

Intro

Compare those specs to the Radeon RX 5500 XT, which features a GPU core clock speed of 1717 MHz, and 8192 MB of GDDR6 RAM set to run at 1750 MHz through a 128-bit bus. It also is made up of 1408 SPUs, 88 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420		50 Watts
Radeon RX 5500 XT		130 Watts
	Difference: 80 Watts (160%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 5500 XT is 696% quicker than the GeForce GT 420 overall, due to its higher bandwidth. (explain)

Radeon RX 5500 XT		229376 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 200576 (696%)

Texel Rate

The Radeon RX 5500 XT will be quite a bit (approximately 2598%) more effective at anisotropic filtering than the GeForce GT 420. (explain)

Radeon RX 5500 XT		151096 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 145496 (2598%)

Pixel Rate

The Radeon RX 5500 XT is quite a bit (more or less 1862%) better at FSAA than the GeForce GT 420, and capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 5500 XT		54944 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 52144 (1862%)

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 MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core 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 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 maximum fill rate.