GeForce 8600 GT 1GB DDR2 vs GeForce 920M

Intro

Compare those specifications to the GeForce 920M, which comes with GPU core speed of 954 MHz, and 2048 MB of DDR3 RAM set to run at 900 MHz through a 64-bit bus. It also is made up of 384 Stream Processors, 32 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce 920M should theoretically be a little bit superior to the GeForce 8600 GT 1GB DDR2 in general. (explain)

GeForce 920M		14400 MB/sec
GeForce 8600 GT 1GB DDR2		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 920M will be quite a bit (about 253%) better at texture filtering than the GeForce 8600 GT 1GB DDR2. (explain)

GeForce 920M		30528 Mtexels/sec
GeForce 8600 GT 1GB DDR2		8640 Mtexels/sec
	Difference: 21888 (253%)

Pixel Rate

The GeForce 920M will be a lot (approximately 77%) faster with regards to FSAA than the GeForce 8600 GT 1GB DDR2, and capable of handling higher screen resolutions more effectively. (explain)

GeForce 920M		7632 Mpixels/sec
GeForce 8600 GT 1GB DDR2		4320 Mpixels/sec
	Difference: 3312 (77%)

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 largest amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.