GeForce GTX 460 2GB vs Geforce GTX 770

Intro

Compare all of that to the Geforce GTX 770, which comes with GPU core speed of 1046 MHz, and 2048 MB of GDDR5 memory running at 1753 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 2GB		160 Watts
Geforce GTX 770		230 Watts
	Difference: 70 Watts (44%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 770 should theoretically be quite a bit superior to the GeForce GTX 460 2GB in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 460 2GB		115200 MB/sec
	Difference: 109184 (95%)

Texel Rate

The Geforce GTX 770 will be much (approximately 254%) better at texture filtering than the GeForce GTX 460 2GB. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 460 2GB		37800 Mtexels/sec
	Difference: 96088 (254%)

Pixel Rate

The Geforce GTX 770 is a lot (more or less 55%) better at FSAA than the GeForce GTX 460 2GB, and also will be capable of handling higher resolutions better. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 460 2GB		21600 Mpixels/sec
	Difference: 11872 (55%)

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 in a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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