GeForce 830M vs GeForce GT 230

Intro

Compare those specifications to the GeForce GT 230, which comes with GPU core speed of 550 MHz, and 1536 MB of DDR3 RAM running at 800 MHz through a 192-bit bus. It also is made up of 32 SPUs, 16 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GT 230		65 Watts
	Difference: 40 Watts (160%)

Memory Bandwidth

The GeForce GT 230 should theoretically be much faster than the GeForce 830M overall. (explain)

GeForce GT 230		38400 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 24000 (167%)

Texel Rate

The GeForce 830M will be much (about 87%) more effective at anisotropic filtering than the GeForce GT 230. (explain)

GeForce 830M		16464 Mtexels/sec
GeForce GT 230		8800 Mtexels/sec
	Difference: 7664 (87%)

Pixel Rate

The GeForce 830M is a lot (more or less 87%) faster with regards to FSAA than the GeForce GT 230, and should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce 830M		8232 Mpixels/sec
GeForce GT 230		4400 Mpixels/sec
	Difference: 3832 (87%)

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 maximum amount of data (in units of MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 amount of texture map elements (texels) that can be processed in one 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 better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.