GeForce 830M vs GeForce GTX 460 1GB

Intro

Compare all of that to the GeForce GTX 460 1GB, which has a clock frequency of 675 MHz and a GDDR5 memory speed of 900 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It is comprised of 336 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 135 Watts (540%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB will be 700% faster than the GeForce 830M in general, due to its greater data rate. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 100800 (700%)

Texel Rate

The GeForce GTX 460 1GB is a lot (more or less 130%) better at texture filtering than the GeForce 830M. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 21336 (130%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 460 1GB is superior to the GeForce 830M, by far. (explain)

GeForce GTX 460 1GB		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 max amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.