Geforce GTX 780 vs Radeon HD 5750 1GB

Intro

Compare those specifications to the Radeon HD 5750 1GB, which comes with a clock frequency of 700 MHz and a GDDR5 memory frequency of 1150 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is comprised of 720(144x5) SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Geforce GTX 780		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 780 should theoretically be quite a bit better than the Radeon HD 5750 1GB overall. (explain)

Geforce GTX 780		288384 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 214784 (292%)

Texel Rate

The Geforce GTX 780 is a lot (more or less 558%) faster with regards to texture filtering than the Radeon HD 5750 1GB. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 140496 (558%)

Pixel Rate

The Geforce GTX 780 is much (about 270%) better at anti-aliasing than the Radeon HD 5750 1GB, and will be able to handle higher resolutions without slowing down too much. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 30224 (270%)

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 largest amount of information (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, 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 number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines 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 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 reach the max fill rate.