GeForce 830M vs GeForce GTX 460 SE

Intro

Compare those specs to the GeForce GTX 460 SE, which features a clock frequency of 650 MHz and a GDDR5 memory frequency of 850 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It features 288 SPUs, 48 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 460 SE		150 Watts
	Difference: 125 Watts (500%)

Memory Bandwidth

In theory, the GeForce GTX 460 SE is 656% quicker than the GeForce 830M overall, because of its greater bandwidth. (explain)

GeForce GTX 460 SE		108800 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 94400 (656%)

Texel Rate

The GeForce GTX 460 SE is quite a bit (more or less 90%) better at anisotropic filtering than the GeForce 830M. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 14736 (90%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 460 SE is superior to the GeForce 830M, by far. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 12568 (153%)

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 (in units of MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the 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 maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.