GeForce 8600 GT 512MB DDR2 vs GeForce 920M

Intro

Compare all of that to the GeForce 920M, which makes use of a 28 nm design. nVidia has set the core speed at 954 MHz. The DDR3 memory works at a frequency of 900 MHz on this specific model. It features 384 SPUs as well as 32 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 920M should be 13% faster than the GeForce 8600 GT 512MB DDR2 in general, due to its higher bandwidth. (explain)

GeForce 920M		14400 MB/sec
GeForce 8600 GT 512MB DDR2		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 920M is a lot (approximately 253%) better at AF than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce 920M		30528 Mtexels/sec
GeForce 8600 GT 512MB DDR2		8640 Mtexels/sec
	Difference: 21888 (253%)

Pixel Rate

The GeForce 920M will be a lot (about 77%) more effective at anti-aliasing than the GeForce 8600 GT 512MB DDR2, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce 920M		7632 Mpixels/sec
GeForce 8600 GT 512MB 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 information (measured in MB per second) that can be transported over the external memory interface within a second. The number 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 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better 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 most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units 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 output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.