GeForce 830M vs GeForce GTX 970

Intro

Compare that to the GeForce GTX 970, which has clock speeds of 1050 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 1664 SPUs as well as 104 TAUs and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 970		145 Watts
	Difference: 120 Watts (480%)

Memory Bandwidth

In theory, the GeForce GTX 970 is 1456% quicker than the GeForce 830M overall, because of its higher bandwidth. (explain)

GeForce GTX 970		224000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 209600 (1456%)

Texel Rate

The GeForce GTX 970 is quite a bit (more or less 563%) more effective at anisotropic filtering than the GeForce 830M. (explain)

GeForce GTX 970		109200 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 92736 (563%)

Pixel Rate

The GeForce GTX 970 will be quite a bit (more or less 716%) better at FSAA than the GeForce 830M, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 970		67200 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 58968 (716%)

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 data (in units of MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.