GeForce GTX 460 1GB vs GeForce GTX 780 Ti

Intro

Compare those specifications to the GeForce GTX 780 Ti, which features GPU clock speed of 875 MHz, and 3072 MB of GDDR5 memory running at 1750 MHz through a 384-bit bus. It also is made up of 2880 Stream Processors, 240 TAUs, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 1GB		160 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 90 Watts (56%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 780 Ti should in theory be a lot superior to the GeForce GTX 460 1GB in general. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GTX 460 1GB		115200 MB/sec
	Difference: 220800 (192%)

Texel Rate

The GeForce GTX 780 Ti will be a lot (about 456%) better at texture filtering than the GeForce GTX 460 1GB. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GTX 460 1GB		37800 Mtexels/sec
	Difference: 172200 (456%)

Pixel Rate

The GeForce GTX 780 Ti is much (approximately 94%) better at AA than the GeForce GTX 460 1GB, and will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce GTX 460 1GB		21600 Mpixels/sec
	Difference: 20400 (94%)

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 (in units of MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.