GeForce 920M vs GeForce GTX 460 1GB

Intro

Compare those specs to the GeForce GTX 460 1GB, which has clock speeds of 675 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 RAM. It features 336 SPUs along with 56 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB will be 700% quicker than the GeForce 920M overall, because of its higher data rate. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 100800 (700%)

Texel Rate

The GeForce GTX 460 1GB will be much (about 24%) faster with regards to anisotropic filtering than the GeForce 920M. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 7272 (24%)

Pixel Rate

The GeForce GTX 460 1GB should be much (more or less 183%) more effective at full screen anti-aliasing than the GeForce 920M, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 13968 (183%)

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 (measured in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.