GeForce GT 450 (OEM) vs GeForce GTX 460

Intro

Compare those specifications to the GeForce GTX 460, which features a core clock frequency of 675 MHz and a GDDR5 memory frequency of 900 MHz. It also features a 192-bit memory bus, and uses a 40 nm design. It is made up of 336 SPUs, 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

The GeForce GT 450 (OEM) should theoretically be a bit faster than the GeForce GTX 460 in general. (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 a lot (more or less 99%) better at AF 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 a bit (about 17%) better at full screen anti-aliasing than the GeForce GTX 460, and also should be 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: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total 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 maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.