GeForce 920M vs GeForce GT 240 GDDR5

Intro

Compare all of that to the GeForce GT 240 GDDR5, which features core speeds of 550 MHz on the GPU, and 850 MHz on the 512 MB of GDDR5 RAM. It features 96 SPUs along with 32 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GT 240 GDDR5 should be 278% faster than the GeForce 920M in general, due to its greater bandwidth. (explain)

GeForce GT 240 GDDR5		54400 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 40000 (278%)

Texel Rate

The GeForce 920M should be a lot (about 73%) more effective at AF than the GeForce GT 240 GDDR5. (explain)

GeForce 920M		30528 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 12928 (73%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 920M is the winner, by far. (explain)

GeForce 920M		7632 Mpixels/sec
GeForce GT 240 GDDR5		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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.