GeForce 830M vs GeForce GTX 285 2GB

Intro

Compare that to the GeForce GTX 285 2GB, which comes with GPU clock speed of 648 MHz, and 2048 MB of GDDR3 memory running at 1242 MHz through a 512-bit bus. It also is comprised of 240 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 179 Watts (716%)

Memory Bandwidth

The GeForce GTX 285 2GB, in theory, should be quite a bit faster than the GeForce 830M in general. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 144576 (1004%)

Texel Rate

The GeForce GTX 285 2GB should be much (approximately 215%) more effective at texture filtering than the GeForce 830M. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 35376 (215%)

Pixel Rate

The GeForce GTX 285 2GB is much (more or less 152%) faster with regards to full screen anti-aliasing than the GeForce 830M, and also able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 285 2GB		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 max amount of data (measured in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.