GeForce GT 450 (OEM) vs GeForce GTX 460

Intro

Compare those specs to the GeForce GTX 460, which features GPU core speed of 675 MHz, and 768 MB of GDDR5 memory running at 900 MHz through a 192-bit bus. It also is comprised of 336 Stream Processors, 56 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 460		150 Watts
	Difference: 44 Watts (42%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) should be 11% faster than the GeForce GTX 460 in general, because of its higher data rate. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GTX 460		86400 MB/sec
	Difference: 9600 (11%)

Texel Rate

The GeForce GTX 460 will be much (more or less 99%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 460		37800 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 18840 (99%)

Pixel Rate

The GeForce GT 450 (OEM) is just a bit (approximately 17%) faster with regards to full screen anti-aliasing than the GeForce GTX 460, and capable of handling higher resolutions better. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GTX 460		16200 Mpixels/sec
	Difference: 2760 (17%)

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 transported past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one 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 - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.