GeForce 830M vs GeForce GTX 285 1GB

Intro

Compare those specifications to the GeForce GTX 285 1GB, which features clock speeds of 648 MHz on the GPU, and 1242 MHz on the 1024 MB of GDDR3 memory. It features 240 SPUs along with 80 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

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

Theoretically speaking, the GeForce GTX 285 1GB is 1004% quicker than the GeForce 830M in general, because of its greater bandwidth. (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 quite a bit (approximately 215%) more effective at 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 is much (about 152%) more effective at anti-aliasing than the GeForce 830M, and also able to handle higher screen resolutions without losing too much performance. (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 information (counted in megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 number of texture map elements (texels) that can be applied in one 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 higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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