GeForce GTX 580 3GB vs GeForce GTX 750

Intro

Compare all that to the GeForce GTX 750, which uses a 28 nm design. nVidia has set the core frequency at 1020 MHz. The GDDR5 memory runs at a frequency of 1250 MHz on this card. It features 512 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 189 Watts (344%)

Memory Bandwidth

In theory, the GeForce GTX 580 3GB should perform much faster than the GeForce GTX 750 overall. (explain)

GeForce GTX 580 3GB		192384 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 112384 (140%)

Texel Rate

The GeForce GTX 580 3GB will be a lot (more or less 51%) more effective at anisotropic filtering than the GeForce GTX 750. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 16768 (51%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 580 3GB is the winner, by a large margin. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
GeForce GTX 750		16320 Mpixels/sec
	Difference: 20736 (127%)

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 max amount of information (counted in MB per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. 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 output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.