GeForce GT 450 (OEM) vs GeForce GTX 460 1GB

Intro

Compare all that to the GeForce GTX 460 1GB, which features a GPU core clock speed of 675 MHz, and 1024 MB of GDDR5 memory set to run at 900 MHz through a 256-bit bus. It also is made up of 336 Stream Processors, 56 Texture Address Units, and 32 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 1GB		160 Watts
	Difference: 54 Watts (51%)

Memory Bandwidth

The GeForce GTX 460 1GB should theoretically perform just a bit faster than the GeForce GT 450 (OEM) overall. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 19200 (20%)

Texel Rate

The GeForce GTX 460 1GB should be much (approximately 99%) more effective at texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 18840 (99%)

Pixel Rate

The GeForce GTX 460 1GB is just a bit (about 14%) better at anti-aliasing than the GeForce GT 450 (OEM), and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 2640 (14%)

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 largest amount of information (measured in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 can be applied per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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