GeForce 830M vs GeForce GTX 285 2GB

Intro

Compare those specifications to the GeForce GTX 285 2GB, which comes with a core clock speed of 648 MHz and a GDDR3 memory frequency of 1242 MHz. It also features a 512-bit memory bus, and makes use of a 55 nm design. It 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

Theoretically, the GeForce GTX 285 2GB should perform 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 is much (approximately 215%) more effective at AF than the GeForce 830M. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 285 2GB is a better choice, by a large margin. (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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the 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 - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.