GeForce 920M vs GeForce GT 230

Intro

Compare those specifications to the GeForce GT 230, which has GPU core speed of 550 MHz, and 1536 MB of DDR3 RAM set to run at 800 MHz through a 192-bit bus. It also features 32 Stream Processors, 16 TAUs, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GT 230 is 167% quicker than the GeForce 920M in general, due to its higher bandwidth. (explain)

GeForce GT 230		38400 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 24000 (167%)

Texel Rate

The GeForce 920M should be a lot (more or less 247%) faster with regards to anisotropic filtering than the GeForce GT 230. (explain)

GeForce 920M		30528 Mtexels/sec
GeForce GT 230		8800 Mtexels/sec
	Difference: 21728 (247%)

Pixel Rate

The GeForce 920M is much (approximately 73%) more effective at full screen anti-aliasing than the GeForce GT 230, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce 920M		7632 Mpixels/sec
GeForce GT 230		4400 Mpixels/sec
	Difference: 3232 (73%)

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 (in units of megabytes per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.