GeForce GTS 250 512MB vs GeForce GTX 750

Intro

Compare those specifications to the GeForce GTX 750, which features a GPU core clock speed of 1020 MHz, and 1024 MB of GDDR5 RAM set to run at 1250 MHz through a 128-bit bus. It also is made up of 512 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GTS 250 512MB		145 Watts
	Difference: 90 Watts (164%)

Memory Bandwidth

The GeForce GTX 750, in theory, should be just a bit faster than the GeForce GTS 250 512MB overall. (explain)

GeForce GTX 750		80000 MB/sec
GeForce GTS 250 512MB		70400 MB/sec
	Difference: 9600 (14%)

Texel Rate

The GeForce GTS 250 512MB will be much (about 45%) more effective at anisotropic filtering than the GeForce GTX 750. (explain)

GeForce GTS 250 512MB		47232 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 14592 (45%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 750 is a better choice, by far. (explain)

GeForce GTX 750		16320 Mpixels/sec
GeForce GTS 250 512MB		11808 Mpixels/sec
	Difference: 4512 (38%)

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 data (measured in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number 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 drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.