GeForce GTS 250 512MB vs GeForce GTX 750 Ti

Intro

Compare that to the GeForce GTX 750 Ti, which comes with GPU clock speed of 1020 MHz, and 2048 MB of GDDR5 memory set to run at 1350 MHz through a 128-bit bus. It also features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
GeForce GTS 250 512MB		145 Watts
	Difference: 85 Watts (142%)

Memory Bandwidth

Theoretically, the GeForce GTX 750 Ti should perform quite a bit faster than the GeForce GTS 250 512MB overall. (explain)

GeForce GTX 750 Ti		86400 MB/sec
GeForce GTS 250 512MB		70400 MB/sec
	Difference: 16000 (23%)

Texel Rate

The GeForce GTS 250 512MB should be just a bit (more or less 16%) more effective at AF than the GeForce GTX 750 Ti. (explain)

GeForce GTS 250 512MB		47232 Mtexels/sec
GeForce GTX 750 Ti		40800 Mtexels/sec
	Difference: 6432 (16%)

Pixel Rate

The GeForce GTX 750 Ti should be a lot (approximately 38%) better at AA than the GeForce GTS 250 512MB, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 750 Ti		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 information (in units of megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it must 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.