GeForce 830M vs GeForce 9800 GT 512MB

Intro

Compare all of that to the GeForce 9800 GT 512MB, which comes with core clock speeds of 600 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 112 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce 9800 GT 512MB		105 Watts
	Difference: 80 Watts (320%)

Memory Bandwidth

In theory, the GeForce 9800 GT 512MB should perform a lot faster than the GeForce 830M in general. (explain)

GeForce 9800 GT 512MB		57600 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 43200 (300%)

Texel Rate

The GeForce 9800 GT 512MB should be quite a bit (about 104%) faster with regards to AF than the GeForce 830M. (explain)

GeForce 9800 GT 512MB		33600 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 17136 (104%)

Pixel Rate

The GeForce 9800 GT 512MB is a small bit (more or less 17%) faster with regards to AA than the GeForce 830M, and also able to handle higher screen resolutions better. (explain)

GeForce 9800 GT 512MB		9600 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 1368 (17%)

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 max amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.