GeForce GT 420 vs Nvidia Titan X

Intro

Compare those specs to the Nvidia Titan X, which features clock speeds of 1417 MHz on the GPU, and 1251 MHz on the 12288 MB of GDDR5X RAM. It features 3584 SPUs along with 224 TAUs and 96 Rasterization Operator 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

Theoretically speaking, the Nvidia Titan X should perform a lot faster than the GeForce GT 420 overall. (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 (more or less 5568%) faster with regards to anisotropic filtering 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 will be quite a bit (approximately 4758%) more effective at AA than the GeForce GT 420, and also should be able to handle higher screen 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: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.