GeForce GT 420 vs Nvidia Titan X

Intro

Compare all that to the Nvidia Titan X, which comes with GPU core speed of 1417 MHz, and 12288 MB of GDDR5X memory running at 1251 MHz through a 384-bit bus. It also is made up of 3584 Stream Processors, 224 TAUs, and 96 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420		50 Watts
Nvidia Titan X		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

In theory, the Nvidia Titan X is 1607% quicker than the GeForce GT 420 overall, because of its higher bandwidth. (explain)

Nvidia Titan X		491520 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 462720 (1607%)

Texel Rate

The Nvidia Titan X will be much (approximately 5568%) faster with regards to AF than the GeForce GT 420. (explain)

Nvidia Titan X		317408 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 311808 (5568%)

Pixel Rate

The Nvidia Titan X should be much (more or less 4758%) faster with regards to full screen anti-aliasing than the GeForce GT 420, and should be capable of handling higher resolutions better. (explain)

Nvidia Titan X		136032 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 133232 (4758%)

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 max amount of data (measured in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.