GeForce 830M vs GeForce GTX 260

Intro

Compare that to the GeForce GTX 260, which has core speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 RAM. It features 192 SPUs as well as 64 TAUs and 28 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 260		182 Watts
	Difference: 157 Watts (628%)

Memory Bandwidth

The GeForce GTX 260 should in theory be a lot faster than the GeForce 830M overall. (explain)

GeForce GTX 260		111888 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 97488 (677%)

Texel Rate

The GeForce GTX 260 should be a lot (about 124%) faster with regards to AF than the GeForce 830M. (explain)

GeForce GTX 260		36864 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 20400 (124%)

Pixel Rate

The GeForce GTX 260 should be quite a bit (more or less 96%) more effective at anti-aliasing than the GeForce 830M, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 260		16128 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 7896 (96%)

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 largest amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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 potential to reach the max fill rate.