GeForce GTX 650 Ti 2GB vs GeForce GTX 750

Intro

Compare those specs to the GeForce GTX 750, which comes with a core clock speed of 1020 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 55 Watts (100%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 Ti 2GB should be 8% quicker than the GeForce GTX 750 in general, due to its higher data rate. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 6400 (8%)

Texel Rate

The GeForce GTX 650 Ti 2GB will be a lot (about 82%) faster with regards to anisotropic filtering than the GeForce GTX 750. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 26752 (82%)

Pixel Rate

The GeForce GTX 750 is a little bit (more or less 10%) faster with regards to FSAA than the GeForce GTX 650 Ti 2GB, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 750		16320 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 1472 (10%)

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 (in units of MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of 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 also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.