GeForce 920M vs GeForce GT 220 GDDR3

Intro

Compare all of that to the GeForce GT 220 GDDR3, which uses a 40 nm design. nVidia has set the core frequency at 625 MHz. The GDDR3 RAM is set to run at a frequency of 1012 MHz on this particular model. It features 48 SPUs as well as 16 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GT 220 GDDR3 should in theory be quite a bit better than the GeForce 920M in general. (explain)

GeForce GT 220 GDDR3		32384 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 17984 (125%)

Texel Rate

The GeForce 920M should be a lot (approximately 205%) more effective at texture filtering than the GeForce GT 220 GDDR3. (explain)

GeForce 920M		30528 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 20528 (205%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 920M is superior to the GeForce GT 220 GDDR3, by a large margin. (explain)

GeForce 920M		7632 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 2632 (53%)

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 maximum amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.