GeForce 9800 GTX vs GeForce GTX 750 Ti

Intro

Compare all that to the GeForce GTX 750 Ti, which uses a 28 nm design. nVidia has set the core frequency at 1020 MHz. The GDDR5 memory runs at a frequency of 1350 MHz on this model. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
GeForce 9800 GTX		140 Watts
	Difference: 80 Watts (133%)

Memory Bandwidth

The GeForce GTX 750 Ti should in theory be a lot faster than the GeForce 9800 GTX in general. (explain)

GeForce GTX 750 Ti		86400 MB/sec
GeForce 9800 GTX		70400 MB/sec
	Difference: 16000 (23%)

Texel Rate

The GeForce 9800 GTX will be a bit (about 6%) more effective at anisotropic filtering than the GeForce GTX 750 Ti. (explain)

GeForce 9800 GTX		43200 Mtexels/sec
GeForce GTX 750 Ti		40800 Mtexels/sec
	Difference: 2400 (6%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 750 Ti is the winner, and very much so. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 5520 (51%)

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 information (counted in MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write 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 clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.