GeForce 830M vs GeForce GTX 880M

Intro

Compare those specs to the GeForce GTX 880M, which comes with a GPU core clock speed of 954 MHz, and 4096 MB of GDDR5 memory set to run at 1000 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 880M		130 Watts
	Difference: 105 Watts (420%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 880M should in theory be much superior to the GeForce 830M in general. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 113600 (789%)

Texel Rate

The GeForce GTX 880M will be quite a bit (approximately 642%) more effective at texture filtering than the GeForce 830M. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 105648 (642%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 880M is superior to the GeForce 830M, and very much so. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 22296 (271%)

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 (counted in MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied 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. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.