GeForce 830M vs GeForce GTX 280

Intro

Compare those specifications to the GeForce GTX 280, which has a core clock speed of 602 MHz and a GDDR3 memory speed of 1107 MHz. It also features a 512-bit memory bus, and makes use of a 65 nm design. It features 240 SPUs, 80 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 280		236 Watts
	Difference: 211 Watts (844%)

Memory Bandwidth

The GeForce GTX 280 should in theory perform quite a bit faster than the GeForce 830M overall. (explain)

GeForce GTX 280		141696 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 127296 (884%)

Texel Rate

The GeForce GTX 280 is much (more or less 193%) better at AF than the GeForce 830M. (explain)

GeForce GTX 280		48160 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 31696 (193%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 280 is superior to the GeForce 830M, by a large margin. (explain)

GeForce GTX 280		19264 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 11032 (134%)

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 megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units by the core clock 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.