GeForce 930M vs GeForce GTX 580 3GB

Intro

Compare that to the GeForce GTX 580 3GB, which has a core clock speed of 772 MHz and a GDDR5 memory frequency of 1002 MHz. It also uses a 384-bit memory bus, and uses a 40 nm design. It features 512 SPUs, 64 TAUs, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 580 3GB should theoretically be quite a bit superior to the GeForce 930M overall. (explain)

GeForce GTX 580 3GB		192384 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 177984 (1236%)

Texel Rate

The GeForce GTX 580 3GB is quite a bit (more or less 122%) faster with regards to texture filtering than the GeForce 930M. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 27136 (122%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 580 3GB is superior to the GeForce 930M, by far. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 29632 (399%)

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 max amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics 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 most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.