GeForce GT 420 vs Radeon RX 5500 XT

Intro

Compare those specs to the Radeon RX 5500 XT, which comes with GPU core speed of 1717 MHz, and 8192 MB of GDDR6 RAM set to run at 1750 MHz through a 128-bit bus. It also is comprised of 1408 SPUs, 88 TAUs, and 32 ROPs.

Display Graphs

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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 should be quite a bit faster than the GeForce GT 420 in general. (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 (more or less 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 will be quite a bit (about 1862%) more effective at AA than the GeForce GT 420, and should be able to handle higher resolutions without losing too much performance. (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: Bandwidth is the largest amount of information (measured in MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number 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 graphics 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 most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.