GeForce 830M vs GeForce GTX 460 2GB

Intro

Compare those specifications to the GeForce GTX 460 2GB, which makes use of a 40 nm design. nVidia has clocked the core speed at 675 MHz. The GDDR5 RAM is set to run at a speed of 900 MHz on this card. It features 336 SPUs as well as 56 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 135 Watts (540%)

Memory Bandwidth

Theoretically, the GeForce GTX 460 2GB should perform quite a bit faster than the GeForce 830M in general. (explain)

GeForce GTX 460 2GB		115200 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 100800 (700%)

Texel Rate

The GeForce GTX 460 2GB is a lot (more or less 130%) more effective at AF than the GeForce 830M. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 21336 (130%)

Pixel Rate

The GeForce GTX 460 2GB should be a lot (more or less 162%) more effective at FSAA than the GeForce 830M, and will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 13368 (162%)

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 data (counted in megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.