GeForce 920M vs GeForce GTX 285 2GB

Intro

Compare all that to the GeForce GTX 285 2GB, which features a core clock speed of 648 MHz and a GDDR3 memory frequency of 1242 MHz. It also uses a 512-bit bus, and makes use of a 55 nm design. It is made up of 240 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX 285 2GB should in theory be much better than the GeForce 920M overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 144576 (1004%)

Texel Rate

The GeForce GTX 285 2GB should be much (approximately 70%) better at texture filtering than the GeForce 920M. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 21312 (70%)

Pixel Rate

The GeForce GTX 285 2GB should be much (approximately 172%) faster with regards to FSAA than the GeForce 920M, and will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 13104 (172%)

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 (counted in MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.