GeForce GTX 465 vs GeForce GTX 750

Intro

Compare those specifications to the GeForce GTX 750, which makes use of a 28 nm design. nVidia has set the core frequency at 1020 MHz. The GDDR5 memory works at a speed of 1250 MHz on this particular card. It features 512 SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GTX 465		200 Watts
	Difference: 145 Watts (264%)

Memory Bandwidth

In theory, the GeForce GTX 465 should be 28% faster than the GeForce GTX 750 in general, due to its greater bandwidth. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 22592 (28%)

Texel Rate

The GeForce GTX 750 should be much (about 22%) better at anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTX 750		32640 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 5932 (22%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 465 is a better choice, though only just barely. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GTX 750		16320 Mpixels/sec
	Difference: 3104 (19%)

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 MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units 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 processed in a second.

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