GeForce 830M vs GeForce GTX 880M

Intro

Compare all that to the GeForce GTX 880M, which makes use of a 28 nm design. nVidia has set the core speed at 954 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this specific model. It features 1536 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator 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

Performance-wise, the GeForce GTX 880M should theoretically be quite a bit superior to the GeForce 830M overall. (explain)

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

Texel Rate

The GeForce GTX 880M is a lot (about 642%) better 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 high levels of AA is important to you, then the GeForce GTX 880M is a better choice, 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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core 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 output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.