GeForce 920M vs GeForce 9500 GT DDR2

Intro

Compare those specs to the GeForce 9500 GT DDR2, which makes use of a 65 nm design. nVidia has clocked the core speed at 550 MHz. The DDR2 memory runs at a speed of 500 MHz on this specific card. It features 32 SPUs along with 16 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 9500 GT DDR2 will be 11% faster than the GeForce 920M in general, due to its higher data rate. (explain)

GeForce 9500 GT DDR2		16000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The GeForce 920M should be much (more or less 247%) more effective at AF than the GeForce 9500 GT DDR2. (explain)

GeForce 920M		30528 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 21728 (247%)

Pixel Rate

The GeForce 920M is quite a bit (more or less 73%) faster with regards to anti-aliasing than the GeForce 9500 GT DDR2, and also will be able to handle higher screen resolutions better. (explain)

GeForce 920M		7632 Mpixels/sec
GeForce 9500 GT DDR2		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 (measured in megabytes per second) that can be transported over 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 memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. 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 fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.