GeForce 830M vs GeForce GT 130

Intro

Compare those specs to the GeForce GT 130, which uses a 55 nm design. nVidia has clocked the core frequency at 500 MHz. The DDR2 memory is set to run at a frequency of 250 MHz on this particular model. It features 48 SPUs as well as 24 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GT 130		75 Watts
	Difference: 50 Watts (200%)

Memory Bandwidth

The GeForce 830M, in theory, should be just a bit faster than the GeForce GT 130 in general. (explain)

GeForce 830M		14400 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 2400 (20%)

Texel Rate

The GeForce 830M will be a lot (approximately 37%) better at AF than the GeForce GT 130. (explain)

GeForce 830M		16464 Mtexels/sec
GeForce GT 130		12000 Mtexels/sec
	Difference: 4464 (37%)

Pixel Rate

The GeForce 830M should be a small bit (approximately 3%) better at full screen anti-aliasing than the GeForce GT 130, and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce 830M		8232 Mpixels/sec
GeForce GT 130		8000 Mpixels/sec
	Difference: 232 (3%)

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 (counted in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 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 amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.