GeForce 920M vs GeForce GT 220 GDDR3

Intro

Compare those specs to the GeForce GT 220 GDDR3, which has a GPU core clock speed of 625 MHz, and 512 MB of GDDR3 RAM running at 1012 MHz through a 128-bit bus. It also is made up of 48 Stream Processors, 16 TAUs, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GT 220 GDDR3 should theoretically be much faster 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 is a lot (about 205%) faster with regards to anisotropic 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 high levels of AA is important to you, then the GeForce 920M is a better choice, 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: Memory bandwidth is the largest amount of data (in units of MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.