GeForce 825M vs GeForce 9800 GT 1GB

Intro

Compare that to the GeForce 9800 GT 1GB, which features GPU clock speed of 600 MHz, and 1024 MB of GDDR3 RAM running at 900 MHz through a 256-bit bus. It also is comprised of 112 Stream Processors, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M		33 Watts
GeForce 9800 GT 1GB		105 Watts
	Difference: 72 Watts (218%)

Memory Bandwidth

The GeForce 9800 GT 1GB should theoretically perform quite a bit faster than the GeForce 825M in general. (explain)

GeForce 9800 GT 1GB		57600 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 43200 (300%)

Texel Rate

The GeForce 9800 GT 1GB will be a lot (about 147%) better at AF than the GeForce 825M. (explain)

GeForce 9800 GT 1GB		33600 Mtexels/sec
GeForce 825M		13600 Mtexels/sec
	Difference: 20000 (147%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 9800 GT 1GB is superior to the GeForce 825M, by far. (explain)

GeForce 9800 GT 1GB		9600 Mpixels/sec
GeForce 825M		6800 Mpixels/sec
	Difference: 2800 (41%)

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 moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the 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 most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.