GeForce GT 240 GDDR5 vs GeForce GTX 750

Intro

Compare those specifications to the GeForce GTX 750, which comes with GPU core speed of 1020 MHz, and 1024 MB of GDDR5 RAM set to run at 1250 MHz through a 128-bit bus. It also features 512 Stream Processors, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 15 Watts (27%)

Memory Bandwidth

In theory, the GeForce GTX 750 is 47% quicker than the GeForce GT 240 GDDR5 in general, because of its higher data rate. (explain)

GeForce GTX 750		80000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 25600 (47%)

Texel Rate

The GeForce GTX 750 should be quite a bit (more or less 85%) faster with regards to anisotropic filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 750		32640 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 15040 (85%)

Pixel Rate

The GeForce GTX 750 will be a lot (approximately 271%) more effective at full screen anti-aliasing than the GeForce GT 240 GDDR5, and will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 750		16320 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 11920 (271%)

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 maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 are applied per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.