GeForce GT 420 vs GeForce GTX Titan

Intro

Compare those specifications to the GeForce GTX Titan, which has core speeds of 837 MHz on the GPU, and 1502 MHz on the 6144 MB of GDDR5 memory. It features 2688 SPUs as well as 224 Texture Address Units and 48 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the GeForce GTX Titan should be 901% quicker than the GeForce GT 420 in general, because of its higher data rate. (explain)

GeForce GTX Titan		288384 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 259584 (901%)

Texel Rate

The GeForce GTX Titan should be much (about 3248%) better at texture filtering than the GeForce GT 420. (explain)

GeForce GTX Titan		187488 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 181888 (3248%)

Pixel Rate

The GeForce GTX Titan will be a lot (more or less 1335%) more effective at FSAA than the GeForce GT 420, and should be capable of handling higher resolutions better. (explain)

GeForce GTX Titan		40176 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 37376 (1335%)

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 information (counted in MB per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.