GeForce 825M vs GeForce 9500 GT DDR2

Intro

Compare those specifications to the GeForce 9500 GT DDR2, which comes with GPU core speed of 550 MHz, and 256 MB of DDR2 RAM running at 500 MHz through a 128-bit bus. It also features 32 SPUs, 16 Texture Address Units, and 8 ROPs.

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

Theoretically, the GeForce 9500 GT DDR2 should be a little bit faster than the GeForce 825M overall. (explain)

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

Texel Rate

The GeForce 825M will be much (more or less 55%) faster with regards to 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

The GeForce 825M will be quite a bit (approximately 55%) better at AA than the GeForce 9500 GT DDR2, and able to handle higher screen resolutions better. (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 megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units 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 in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.