GeForce 825M vs GeForce 9500 GT DDR2

Intro

Compare all that to the GeForce 9500 GT DDR2, which comes with a core clock frequency of 550 MHz and a DDR2 memory speed of 500 MHz. It also uses a 128-bit bus, and makes use of a 65 nm design. It features 32 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M		33 Watts
GeForce 9500 GT DDR2		50 Watts
	Difference: 17 Watts (52%)

Memory Bandwidth

As far as performance goes, the GeForce 9500 GT DDR2 should in theory be a small bit better than the GeForce 825M in general. (explain)

GeForce 9500 GT DDR2		16000 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The GeForce 825M should be quite a bit (more or less 55%) better at texture filtering than the GeForce 9500 GT DDR2. (explain)

GeForce 825M		13600 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 4800 (55%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 825M is the winner, and very much so. (explain)

GeForce 825M		6800 Mpixels/sec
GeForce 9500 GT DDR2		4400 Mpixels/sec
	Difference: 2400 (55%)

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 maximum amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 are applied per second. This is worked out by multiplying the total amount 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 processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure 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 filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.