GeForce GTX 580 3GB vs GeForce GTX 750

Intro

Compare those specs to the GeForce GTX 750, which comes with core clock speeds of 1020 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 512 SPUs as well as 32 TAUs 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

Theoretically speaking, the GeForce GTX 580 3GB will be 140% quicker than the GeForce GTX 750 in general, because of its greater data rate. (explain)

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

Texel Rate

The GeForce GTX 580 3GB is much (about 51%) more effective at AF than the GeForce GTX 750. (explain)

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

Pixel Rate

The GeForce GTX 580 3GB will be much (approximately 127%) faster with regards to full screen anti-aliasing than the GeForce GTX 750, and will be able to handle higher screen resolutions better. (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 largest amount of data (measured in MB per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.