Geforce GTX 780 vs Radeon HD 3470 512MB

Intro

Compare that to the Radeon HD 3470 512MB, which comes with a clock speed of 800 MHz and a GDDR3 memory frequency of 950 MHz. It also features a 128-bit memory bus, and makes use of a 55 nm design. It is made up of 40(8x5) SPUs, 4 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Geforce GTX 780 is 849% quicker than the Radeon HD 3470 512MB in general, because of its higher bandwidth. (explain)

Geforce GTX 780		288384 MB/sec
Radeon HD 3470 512MB		30400 MB/sec
	Difference: 257984 (849%)

Texel Rate

The Geforce GTX 780 should be quite a bit (more or less 5078%) faster with regards to AF than the Radeon HD 3470 512MB. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon HD 3470 512MB		3200 Mtexels/sec
	Difference: 162496 (5078%)

Pixel Rate

The Geforce GTX 780 is much (more or less 1195%) faster with regards to anti-aliasing than the Radeon HD 3470 512MB, and also capable of handling higher screen resolutions while still performing well. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon HD 3470 512MB		3200 Mpixels/sec
	Difference: 38224 (1195%)

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 information (counted in MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.