GeForce 830M vs GeForce GTX 285 1GB

Intro

Compare those specs to the GeForce GTX 285 1GB, which comes with a GPU core clock speed of 648 MHz, and 1024 MB of GDDR3 memory set to run at 1242 MHz through a 512-bit bus. It also is made up of 240 SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 179 Watts (716%)

Memory Bandwidth

Performance-wise, the GeForce GTX 285 1GB should in theory be a lot better than the GeForce 830M overall. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 144576 (1004%)

Texel Rate

The GeForce GTX 285 1GB will be much (more or less 215%) faster with regards to anisotropic filtering than the GeForce 830M. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 35376 (215%)

Pixel Rate

The GeForce GTX 285 1GB should be a lot (about 152%) more effective at FSAA than the GeForce 830M, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 12504 (152%)

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: Bandwidth is the largest amount of data (counted in MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 are applied in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.