GeForce 830M vs GeForce GTX 660 Ti

Intro

Compare those specs to the GeForce GTX 660 Ti, which uses a 28 nm design. nVidia has set the core speed at 915 MHz. The GDDR5 RAM runs at a speed of 1500 MHz on this specific card. It features 1344 SPUs along with 112 Texture Address Units and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 125 Watts (500%)

Memory Bandwidth

The GeForce GTX 660 Ti, in theory, should be a lot faster than the GeForce 830M in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 129600 (900%)

Texel Rate

The GeForce GTX 660 Ti should be quite a bit (about 522%) more effective at AF than the GeForce 830M. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 86016 (522%)

Pixel Rate

The GeForce GTX 660 Ti is a lot (about 167%) more effective at anti-aliasing than the GeForce 830M, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 13728 (167%)

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 max amount of information (in units of MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.