GeForce 830M vs Geforce GTX 670

Intro

Compare all that to the Geforce GTX 670, which features a clock frequency of 915 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It features 1344 SPUs, 112 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Geforce GTX 670		170 Watts
	Difference: 145 Watts (580%)

Memory Bandwidth

The Geforce GTX 670 should theoretically be quite a bit faster than the GeForce 830M overall. (explain)

Geforce GTX 670		192000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 177600 (1233%)

Texel Rate

The Geforce GTX 670 is quite a bit (approximately 522%) better at anisotropic filtering than the GeForce 830M. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 86016 (522%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 670 is a better choice, and very much so. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 21048 (256%)

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 maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 can be processed in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. 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 lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.