GeForce 825M vs GeForce GTX 260 216SP 55 nm

Intro

Compare all that to the GeForce GTX 260 216SP 55 nm, which features clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 memory. It features 216 SPUs as well as 72 TAUs and 28 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M		33 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 138 Watts (418%)

Memory Bandwidth

Theoretically, the GeForce GTX 260 216SP 55 nm should perform a lot faster than the GeForce 825M in general. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 97488 (677%)

Texel Rate

The GeForce GTX 260 216SP 55 nm should be quite a bit (more or less 205%) more effective at texture filtering than the GeForce 825M. (explain)

GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
GeForce 825M		13600 Mtexels/sec
	Difference: 27872 (205%)

Pixel Rate

The GeForce GTX 260 216SP 55 nm will be much (more or less 137%) faster with regards to full screen anti-aliasing than the GeForce 825M, and should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
GeForce 825M		6800 Mpixels/sec
	Difference: 9328 (137%)

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 maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units by the core 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 one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 potential to get to the maximum fill rate.