GeForce 825M vs GeForce 9500 GT 1GB GDDR3

Intro

Compare all of that to the GeForce 9500 GT 1GB GDDR3, which features GPU core speed of 550 MHz, and 1024 MB of GDDR3 memory set to run at 800 MHz through a 128-bit bus. It also is made up of 32 Stream Processors, 16 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M		33 Watts
GeForce 9500 GT 1GB GDDR3		50 Watts
	Difference: 17 Watts (52%)

Memory Bandwidth

Performance-wise, the GeForce 9500 GT 1GB GDDR3 should theoretically be much superior to the GeForce 825M in general. (explain)

GeForce 9500 GT 1GB GDDR3		25600 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 11200 (78%)

Texel Rate

The GeForce 825M should be a lot (approximately 55%) more effective at AF than the GeForce 9500 GT 1GB GDDR3. (explain)

GeForce 825M		13600 Mtexels/sec
GeForce 9500 GT 1GB GDDR3		8800 Mtexels/sec
	Difference: 4800 (55%)

Pixel Rate

The GeForce 825M will be quite a bit (about 55%) better at AA than the GeForce 9500 GT 1GB GDDR3, and also will be able to handle higher resolutions without slowing down too much. (explain)

GeForce 825M		6800 Mpixels/sec
GeForce 9500 GT 1GB GDDR3		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 data (counted in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. In the case of 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 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 of the card by the core 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 processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.