GeForce 920M vs GeForce GT 230

Intro

Compare all of that to the GeForce GT 230, which uses a 40 nm design. nVidia has set the core frequency at 550 MHz. The DDR3 RAM works at a speed of 800 MHz on this specific card. It features 32 SPUs along with 16 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GT 230 should in theory be much better than the GeForce 920M overall. (explain)

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

Texel Rate

The GeForce 920M is quite a bit (approximately 247%) more effective at AF 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 will be quite a bit (more or less 73%) faster with regards to anti-aliasing than the GeForce GT 230, and will 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: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. 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 potential to get to the max fill rate.