GeForce 830M vs GeForce GTX 280

Intro

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

Memory Bandwidth

Theoretically speaking, the GeForce GTX 280 should perform much 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 should be much (approximately 193%) more effective at AF than the GeForce 830M. (explain)

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

Pixel Rate

The GeForce GTX 280 is a lot (about 134%) more effective at anti-aliasing than the GeForce 830M, and also should be capable of handling higher screen resolutions without slowing down too much. (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 (counted in megabytes per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock 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 rate is also dependant on quite a few 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.