GeForce GTX 275 vs GeForce GTX 750

Intro

Compare those specs to the GeForce GTX 750, which comes with core speeds of 1020 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 512 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GTX 275		219 Watts
	Difference: 164 Watts (298%)

Memory Bandwidth

The GeForce GTX 275, in theory, should perform much faster than the GeForce GTX 750 in general. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 47008 (59%)

Texel Rate

The GeForce GTX 275 should be much (more or less 55%) faster with regards to texture filtering than the GeForce GTX 750. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 18000 (55%)

Pixel Rate

The GeForce GTX 275 is a little bit (about 9%) better at full screen anti-aliasing than the GeForce GTX 750, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GTX 750		16320 Mpixels/sec
	Difference: 1404 (9%)

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 (measured in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.