GeForce GTX 275 vs GeForce GTX 750 Ti

Intro

Compare those specs to the GeForce GTX 750 Ti, which features a core clock speed of 1020 MHz and a GDDR5 memory frequency of 1350 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is comprised of 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 GTX 275		219 Watts
	Difference: 159 Watts (265%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 275 should be 47% quicker than the GeForce GTX 750 Ti overall, due to its greater data rate. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 750 Ti		86400 MB/sec
	Difference: 40608 (47%)

Texel Rate

The GeForce GTX 275 will be much (approximately 24%) faster with regards to texture filtering than the GeForce GTX 750 Ti. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 750 Ti		40800 Mtexels/sec
	Difference: 9840 (24%)

Pixel Rate

The GeForce GTX 275 is a bit (approximately 9%) more effective at AA than the GeForce GTX 750 Ti, and also capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GTX 750 Ti		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 max amount of data (in units of MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.