GeForce 830M vs GeForce GTX 960M

Intro

Compare all of that to the GeForce GTX 960M, which comes with a clock speed of 1096 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 960M		65 Watts
	Difference: 40 Watts (160%)

Memory Bandwidth

In theory, the GeForce GTX 960M should be 344% faster than the GeForce 830M in general, due to its greater data rate. (explain)

GeForce GTX 960M		64000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 49600 (344%)

Texel Rate

The GeForce GTX 960M is a lot (more or less 166%) more effective at texture filtering than the GeForce 830M. (explain)

GeForce GTX 960M		43840 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 27376 (166%)

Pixel Rate

The GeForce GTX 960M will be quite a bit (about 113%) faster with regards to AA than the GeForce 830M, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 960M		17536 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 9304 (113%)

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 largest amount of information (measured in MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. 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 lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.