GeForce GT 420 vs GeForce GTX 1060 3GB

Intro

Compare that to the GeForce GTX 1060 3GB, which comes with core speeds of 1506 MHz on the GPU, and 2000 MHz on the 3072 MB of GDDR5 RAM. It features 1152 SPUs as well as 72 Texture Address Units and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420		50 Watts
GeForce GTX 1060 3GB		120 Watts
	Difference: 70 Watts (140%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1060 3GB should be a lot faster than the GeForce GT 420 in general. (explain)

GeForce GTX 1060 3GB		196608 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 167808 (583%)

Texel Rate

The GeForce GTX 1060 3GB is a lot (more or less 1836%) more effective at anisotropic filtering than the GeForce GT 420. (explain)

GeForce GTX 1060 3GB		108432 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 102832 (1836%)

Pixel Rate

The GeForce GTX 1060 3GB is quite a bit (about 2482%) faster with regards to anti-aliasing than the GeForce GT 420, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 1060 3GB		72288 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 69488 (2482%)

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 maximum amount of data (counted in MB per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units 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 number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.