GeForce GT 420 vs GeForce GTX Titan

Intro

Compare those specifications to the GeForce GTX Titan, which comes with core speeds of 837 MHz on the GPU, and 1502 MHz on the 6144 MB of GDDR5 memory. It features 2688 SPUs along with 224 TAUs 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 is 901% faster than the GeForce GT 420 overall, 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 will be much (more or less 3248%) faster with regards to AF 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 also 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 maximum amount of data (counted in MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.