GeForce GT 420 vs GeForce GTX 1050 3GB

Intro

Compare those specs to the GeForce GTX 1050 3GB, which makes use of a 14 nm design. nVidia has clocked the core speed at 1392 MHz. The GDDR5 memory is set to run at a speed of 1750 MHz on this specific card. It features 768 SPUs as well as 48 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420		50 Watts
GeForce GTX 1050 3GB		75 Watts
	Difference: 25 Watts (50%)

Memory Bandwidth

In theory, the GeForce GTX 1050 3GB should perform a lot faster than the GeForce GT 420 in general. (explain)

GeForce GTX 1050 3GB		86016 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 57216 (199%)

Texel Rate

The GeForce GTX 1050 3GB is a lot (approximately 1093%) faster with regards to AF than the GeForce GT 420. (explain)

GeForce GTX 1050 3GB		66816 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 61216 (1093%)

Pixel Rate

The GeForce GTX 1050 3GB should be much (approximately 1093%) better at full screen anti-aliasing than the GeForce GT 420, and capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 1050 3GB		33408 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 30608 (1093%)

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 (in units of MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher 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 number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.