GeForce GT 420 vs GeForce GTX Titan Black

Intro

Compare all of that to the GeForce GTX Titan Black, which comes with clock speeds of 889 MHz on the GPU, and 1750 MHz on the 6144 MB of GDDR5 RAM. It features 2880 SPUs along with 240 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 Black		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX Titan Black should perform quite a bit faster than the GeForce GT 420 overall. (explain)

GeForce GTX Titan Black		336000 MB/sec
GeForce GT 420		28800 MB/sec
	Difference: 307200 (1067%)

Texel Rate

The GeForce GTX Titan Black is much (about 3710%) more effective at anisotropic filtering than the GeForce GT 420. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
GeForce GT 420		5600 Mtexels/sec
	Difference: 207760 (3710%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX Titan Black is the winner, by a large margin. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
GeForce GT 420		2800 Mpixels/sec
	Difference: 39872 (1424%)

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 max amount of data (measured in MB per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.