GeForce 830M vs Geforce GTX 670

Intro

Compare those specifications to the Geforce GTX 670, which has core speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1344 SPUs as well as 112 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 670		170 Watts
	Difference: 145 Watts (580%)

Memory Bandwidth

The Geforce GTX 670 should theoretically perform much faster than the GeForce 830M in general. (explain)

Geforce GTX 670		192000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 177600 (1233%)

Texel Rate

The Geforce GTX 670 is much (approximately 522%) faster with regards to AF than the GeForce 830M. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 86016 (522%)

Pixel Rate

The Geforce GTX 670 should be much (more or less 256%) faster with regards to AA than the GeForce 830M, and should be able to handle higher screen resolutions while still performing well. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 21048 (256%)

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 information (measured in megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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